Consulta: subjectFacets:"Reproduction"
Registros recuperados: 672
Data/hora: 02/06/2024 08:21:19

El fotoperiodo y su relación con la reproduccón del venado cola blanca (Odocoileus virginianus miquihuanensis) en el Altiplano Potosino.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Arenas Baéz, Pablo.
En México el venado cola blanca es la especie más importante en la actividad cinegética por su derrama económica, lo que ha motivado a manipular la reproducción de esta especie para garantizar su conservación y aprovechamiento sustentable en el territorio nacional. Por tal motivo se llevó a cabo la presente investigación con el objetivo de definir la época reproductiva del venado cola blanca (O. v. miquihuanensis) en el Altiplano Potosino, la calidad de semen, la relación del fotoperiodo en la producción y la calidad de semen, y generar un índice de calidad de semen de venado. Se utilizaron 3 venados machos adultos con edades de 3½, 4½ y 6½. La obtención del semen se realizó mensualmente por electro-eyaculación, y fue evaluado en base a motilidad masal...
Palavras-chave: Calidad de semen; Fotoperiodo; Reproducción; Venado cola blanca; Semen quality; Photoperiod; Reproduction; White-tailed deer; Ganadería; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/565

Antimicrobiales para el control de hongos en una dieta artificial y su impacto en la supervivencia y reproducción de Spodoptera frugiperda (J. E. Smith).
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Zambrano Gutiérrez, Jorge.
Las dietas artificiales son importantes para establecer crías de insectos bajo condiciones controladas de laboratorio. Sin embargo, en estas condiciones también pueden la contaminación de las dietas con hongos. Para evitar la contaminación de las dietas de insectos se utilizan antimicrobiales que en algunas ocasiones ya están presentes en la dieta o bien se deben agregar a ésta. En el laboratorio de Toxicología de Insecticidas la dieta artificial BioServ Inc., Frenchtown, NJ. se contaminaba con hongos. Así mismo se observó que al controlar la contaminación, ésta se podría utilizar en la cría masiva de Spodoptera frugiperda. El objetivo general del presente trabajo fue estimar la supervivencia, reproducción, duración del ciclo de vida, peso de larvas de...
Palavras-chave: Contaminación; Dietas artificiales; Hongos; Cría masiva; Control; Antimicrobiales; Sobrevivencia; Reproducción; Contamination; Artificials diets; Fungi; Mass rearing; Control; Antimicrobials; Survival; Reproduction; Entomología y Acarología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2034

Factores genéticos y ambientales que afectan el comportamiento reproductivo de conejas Nueva Zelanda, California y Chinchilla.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Ortega Baltazar, Edgar.
Es poco conocido el comportamiento reproductivo de las principales razas de conejo en México aunque se cuenta con información proveniente del Centro Nacional de Cunicultura. Se estudio el tamaño total de la camada al nacimiento (TTCN), tamaño de la camada viva al nacimiento (TCVN), intervalo interparto (II), tamaño de la camada al destete (TCD), peso de la camada al destete (PCD) y el peso medio del gazapo al destete (PMD) de hembras Nueva Zelanda (NZ), California (CL) y Chinchilla (CH) utilizando un modelo estadístico mixto que incluyo los efectos de raza, coneja y año-estación de parto. Se utilizaron 8,162 registros reproductivos. Se definieron 18 épocas año-estación de parto, agrupadas trimestralmente de Diciembre de 2005 a Julio de 2010. Los datos...
Palavras-chave: Reproducción; Coneja; Centro nacional de cunicultura; Reproduction; Dam; National cuniculture center; Maestría; Ganadería.
Ano: 2012
URL: http://hdl.handle.net/10521/728

El fotoperiodo y su relación con la reproduccón del venado cola blanca (Odocoileus virginianus miquihuanensis) en el Altiplano Potosino.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Arenas Baéz, Pablo.
En México el venado cola blanca es la especie más importante en la actividad cinegética por su derrama económica, lo que ha motivado a manipular la reproducción de esta especie para garantizar su conservación y aprovechamiento sustentable en el territorio nacional. Por tal motivo se llevó a cabo la presente investigación con el objetivo de definir la época reproductiva del venado cola blanca (O. v. miquihuanensis) en el Altiplano Potosino, la calidad de semen, la relación del fotoperiodo en la producción y la calidad de semen, y generar un índice de calidad de semen de venado. Se utilizaron 3 venados machos adultos con edades de 3½, 4½ y 6½. La obtención del semen se realizó mensualmente por electro-eyaculación, y fue evaluado en base a motilidad masal...
Palavras-chave: Calidad de semen; Fotoperiodo; Reproducción; Venado cola blanca; Semen quality; Photoperiod; Reproduction; White-tailed deer; Ganadería; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/565

El aprovechamiento y la estructura poblacional de Agave kerchovei Lem., en Tehuacán-Cuicatlán, México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Brena Bustamante, Paulina.
El Valle de Tehuacán-Cuicatlán (VTC) es una provincia de gran riqueza etnoflorística en la que resalta el género Agave por su riqueza específica y los múltiples recursos que ofrece. Los agaves se reproducen por la vía sexual solo una vez en su ciclo de vida (semélparos). La información sobre Agave kerchovei Lem., “cacayas” (botones florales) o “Rabo de León” (planta) documenta que es de interés particular por el aprovechamiento de los botones florales. El objetivo de este estudio fue conocer el estado de dos poblaciones de A. kerchovei  mediante un análisis  etnobotánico, espacial y ecológico en dos áreas de aprovechamiento del VTC. En San Rafael, Puebla y San Gabriel Casa Blanca, Oaxaca, se realizaron entrevistas a hombres y mujeres; se describieron las...
Palavras-chave: Cacayas; Rabo de León; Etnobotánica; Reproducción; Germinación; Patrón de distribución; Demografía; Ethnobotany; Reproduction; Germination; Spatial distribution pattem; Demography; Maestría; Botánica.
Ano: 2012
URL: http://hdl.handle.net/10521/715

Why Did the Snake Cross the Road? Effects of Roads on Movement and Location of Mates by Garter Snakes (Thamnophis sirtalis parietalis)
Provedor de dados: Ecology and Society
Autores: Shine, Richard; University of Sydney; rics@bio.usyd.edu.au; Lemaster, Michael; ; lemasterm@mail.science.orst.edu; Wall, Michael; ; mwall@bio.usyd.edu.au; Langkilde, Tracy; ; langkild@bio.usyd.edu.au; Mason, Robert; ; masonr@science.oregonstate.edu.
If animals avoid road surfaces or are unable to follow conspecific trails across such surfaces, previously continuous populations may be fragmented. We gathered data on the effects of a small (4-m wide) gravel road on the behavior and trail-following abilities of garter snakes (Thamnophis sirtalis parietalis) in Manitoba, central Canada. As expected, the road surface had less vegetation cover, a more open canopy and, thus, higher incident radiation than did the surrounding grassland. Contrary to expectations, however, substrate temperatures were lower on the road than in its surrounds, because of the higher reflectivity of the road's surface. On a nearby asphalt road, substrate temperatures were relatively high on the road surface only in the evening, as...
Tipo: Peer-Reviewed Reports
Palavras-chave: Behavior; Connectivity; Habitat fragmentation; Pheromones; Reproduction; Reptile.
Ano: 2004

Association between AA-NAT gene polymorphism and reproductive performance in sheep
Provedor de dados: Electronic Journal of Biotechnology
Autores: Ding-ping,Bai; Cheng-jiang,Yu; Yu-lin,Chen.
Arylalkylamine N-acetyltransferase (AA-NAT) is critical enzyme in Melatonin (MLT) biosynthesis for MLT regulating the animal seasonal breeding. In this study, DNA sequencing methods were applied to detect the polymorphisms of the AA-NAT gene in 179 Chinese sheep belonging to two non-seasonal reproduction breeds and two seasonal reproduction breeds. One mutation at exon 3 (NM_001009461:c.486A &amp;gt; G) was &amp;#64257;rstly described at the sheep AA-NAT locus. Hence, we described the SmaI PCR-RFLP method for detecting EX3 486A &amp;gt; G mutation, frequencies of the AA-NAT-G allele varied from 0.871 to 0.908 in two non-seasonal reproduction breeds and 0.517 to 0.578 in two seasonal reproduction breeds. The associations of SmaI polymorphism with estrus...
Tipo: Journal article
Palavras-chave: AA-NAT gene; Polymorphism; Reproduction; Seasonality; Sheep.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000200007

A transcriptome analysis of mitten crab testes (Eriocheir sinensis)
Provedor de dados: Genetics and Molecular Biology
Autores: Zhang,Wei; Wan,Haolei; Jiang,Hui; Zhao,Yunlong; Zhang,Xiaowei; Hu,Songnian; Wang,Qun.
The identification of expressed genes involved in sexual precocity of the mitten crab (Eriocheir sinensis) is critical for a better understanding of its reproductive development. To this end, we constructed a cDNA library from the rapid developmental stage of testis of E. sinensis and sequenced 3,388 randomly picked clones. After processing, 2,990 high-quality expressed sequence tags (ESTs) were clustered into 2,415 unigenes including 307 contigs and 2,108 singlets, which were then compared to the NCBI non-redundant (nr) protein and nucleotide (nt) database for annotation with Blastx and Blastn, respectively. After further analysis, 922 unigenes were obtained with concrete annotations and 30 unigenes were found to have functions possibly related to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Testis; EST; Eriocheir sinensis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100024

A genetic framework for flowering-time pathways in Citrus spp.
Provedor de dados: Genetics and Molecular Biology
Autores: Dornelas,Marcelo Carnier; Camargo,Raquel Luciana Boscariol; Figueiredo,Luciana Harumi Morimoto; Takita,Marco Aurélio.
Floral transition is one the most drastic changes occurring during the life cycle of a plant. The shoot apical meristem switches from the production of leaves with associated secondary shoot meristems to the production of flower meristems. This transition is abrupt and generally irreversible, suggesting it is regulated by a robust gene regulatory network capable of driving sharp transitions. The moment at which this transition occurs is precisely determined by environmental and endogenous signals. A large number of genes acting within these pathways have been cloned in model herbaceous plants such as Arabidopsis thaliana. In this paper, we report the results of our search in the Citrus expressed sequence tag (CitEST) database for expressed sequence tags...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproductive development; Flowering-time genes; Reproduction; Photoperiod; CONSTANS.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500006

Towards the identification of flower-specific genes in Citrus spp
Provedor de dados: Genetics and Molecular Biology
Autores: Dornelas,Marcelo Carnier; Camargo,Raquel Luciana Boscariol; Berger,Irving Joseph; Takita,Marco Aurélio.
Citrus sinensis is a perennial woody species, for which genetic approaches to the study of reproductive development are not readily amenable. Here, the usefulness of the CitEST Expressed Sequence Tag (EST) database is demonstrated as a reliable new resource for identifying novel genes exclusively related to Citrus reproductive biology. We performed the analysis of an EST dataset of the CitEST Project containing 4,330 flower-derived cDNA sequences. Relying on bioinformatics tools, sequences exclusively present in this flower-derived sequence collection were selected and used for the identification of Citrus putative flower-specific genes. Our analysis revealed several Citrus sequences showing significant similarity to conserved genes known to have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Development; Flower-specific genes; Reproduction; Transcription factors.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500005

Lack of association between genetic polymorphisms in IGF1 and IGFBP3 with twin births in a Brazilian population (Cândido Godói, Rio Grande do Sul)
Provedor de dados: Genetics and Molecular Biology
Autores: Oliveira-Klein,Mariana de; Cardoso-dos-Santos,Augusto César; Tagliani-Ribeiro,Alice; Fagundes,Nelson Rosa; Matte,Ursula; Schuler-Faccini,Lavinia.
Abstract Insulin-like growth factor (IGF-1) is an important peptide hormone involved in the reproduction and fetal development of mammals, and it is suggested that it may influence the human twinning rate. This study aimed to test such possible association, investigating the genetic polymorphisms IGF1 (CA)n and IGFBP3 rs2854744 in the population from Candido Godoi (CG), a small city located in the South of Brazil that has a high prevalence of twin births. A case-control study was performed comprising a total of 39 cases (representing about 40% of the mothers of twins who were born in CG after 1995) and 214 controls (mothers of non-twin children), 97 of whom were living in CG while 117 were living in Porto Alegre. DNA was extracted from blood leucocytes and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insulin-like growth factor; Founder effect; Microsatellite; Reproduction; Twinning.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500775

The relative growth and sexual maturity of the freshwater crab Dilocarcinus pagei (Brachyura, Trichodactylidae) in the northwestern region of the state of São Paulo
Provedor de dados: Iheringia Série Zoologia
Autores: Herrera,Daphine R.; Davanso,Thiago M.; Costa,Rogerio C.; Taddei,Fabiano G.
The aim of the present study was to determine the size at sexual maturity in the freshwater crab Dilocarcinus pagei Stimpson, 1861, from a population located in Mendonça, state of São Paulo, Brazil. The crabs were sampled monthly (July 2005 to June 2007), at Barra Mansa reservoir. The specimens were captured manually or in sieves passed through the aquatic vegetation. The crabs were captured and separated by sex based on morphology of the pleon and on the number of pleopods. The following dimensions were measured: carapace width (CW); carapace length (CL); propodus length (PL); and abdomen width (AW). The morphological analysis of the gonads was used to identify and categorize individuals according to their stage of development. The morphological maturity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Gonadal maturity; Morphological maturity; Reproduction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000300004

Variação anual do sistema reprodutor de fêmeas de Bothrops jararaca (Serpentes, Viperidae)
Provedor de dados: Iheringia Série Zoologia
Autores: Janeiro-Cinquini,Thélia R. F.
The morphological changes of the ovary and oviduct of 238 tropical snakes Bothrops jararaca (Wied, 1824) were determined. The ovarian mass presented a remarkable decrease in October, after ovulation, staying in low levels from November to March, during the gestational period. From April to September, it increased because of the ovarian follicles maturation. A gradual increase in oviduct weight was observed from October to March due to stages of embryonic development. A significant difference was observed between right and left ovary weight, and oviduct length, independently of the months considered.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bothrops jararaca; Reproduction; Ovary weight; Oviduct length.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000300017

Fecundity of the spider crab Mithraculus forceps (Decapoda, Mithracidae) from the northeastern coast of the state of São Paulo, Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Cobo,Valter J.; Okamori,Claudia M.
Fecundity is one of the most important parameters in studying the reproductive output of Pleocyemata decapods, especially because of its relationship to the efficiency of population replacement. Knowledge of fecundity provides basic elements for understanding the reproductive strategies, dynamics, and evolution of a given population. The present investigation provides informations on fecundity, egg size, egg loss, and the relationship between fecundity and selected environmental features, for the spider crab Mithraculus forceps (A. Milne Edwards, 1875). Ovigerous crabs were collected each month during 2000, by SCUBA diving, at Couves Island (23º25'25"S, 44º52'03"W) on the northeastern coast of the state of São Paulo, Brazil. A total of 40 ovigerous females...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Reproductive output; Brachyura; Mithraculus forceps; Ubatuba.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000100012

Reproductive aspects of Dendropsophus sanborni (Anura, Hylidae) in northeastern Argentina
Provedor de dados: Iheringia Série Zoologia
Autores: Curi,Lucila M.; Olea,Gabriela. B.; Álvarez,Blanca B.; Céspedez,Jorge A.; Lombardo,Daniel M.
Reproductive aspects of Dendropsophus sanborni (Anura, Hylidae) in northeastern Argentina. The aim of this investigation was to characterize reproductive aspects of Dendropsophus sanborni (Schmidt, 1944) (Anura, Hylidae) in the northwest of Corrientes province, in northeastern Argentina. The reproductive cycles of males and females, the existence of sexual dimorphism and the male’s vocalization period were analyzed. Samplings were made from September 2011 to August 2012. Dendropsophus sanborni showed a prolonged reproductive pattern because reproductive activity was observed during most part of the year. Calling males were recorded all months except in July. The spermatogenic cycle can be characterized as potentially continuous. In males, snout-vent length...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Vocalizations; Gonads.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000400007

Natural history of the lizard Enyalius iheringii (Squamata, Leiosauridae) in southern Brazilian Atlantic forest
Provedor de dados: Iheringia Série Zoologia
Autores: Rautenberg,Ricardo; Laps,Rudi R.
Studies on the natural history of the lizard Enyalius iheringii Boulenger, 1885, as well as other tropical lizards, are rare. In this study, some aspects of the natural history of this endemic species from the Atlantic forest are reported in areas of Vale do Itajaí, state of Santa Catarina, Brazil. Twenty individuals were found, of which 18 were collected. Most of them were found over the vegetation (n=17) and on the ground (n=3). The main defensive strategy displayed was camouflage (n=16). Jumping (n=1), jumping and running (n=1) and running (n=2) were also observed in some individuals. When handled, lizards exhibited mouth wide open, hissing, and occasionally biting, as well as color change in males. Regarding its diet, the numerically most important...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Reproduction; Defensive behavior; Microhabitat use.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000400002

Microhabitat preferences of the freshwater prawn Macrobrachium jelskii (Decapoda: Palaemonidae)
Provedor de dados: Iheringia Série Zoologia
Autores: Silva,Jersei N.; Oliveira,Guilherme de; Rocha,Sérgio S. da.
ABSTRACT We analyzed the microhabitat preferences of Macrobrachium jelskii (Miers, 1877) males and females inhabiting an urban water reservoir in Cruz das Almas, Bahia, Brazil. Prawns were collected monthly, from March 2015 to February 2016, in three microhabitats, using a sieve. Each microhabitat was dominated by one macrophyte species: Eleocharis sp. (M1), Cabomba sp. (M2), and Nymphaea sp. (M3). The prawns were measured (carapace length), and categorized as juvenile males, adult males, juvenile females, non-ovigerous adult females and ovigerous adult females. An analysis of variance (ANOVA) was used to compare the number and size of individuals. The sex ratio and frequency of ovigerous females in the three microhabitats were also calculated. The sex...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrophyte; Population structure; Reproduction; Spatial distribution.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100227

Reproductive biology of Hyla goiana (Anura, Hylidae)
Provedor de dados: Iheringia Série Zoologia
Autores: Menin,Marcelo; Silva,Rodrigo A.; Giaretta,Ariovaldo A.
Male-male and male-female interactions, reproductive habitat, and vocalizations of Hyla goiana B. Lutz, 1968 a member of H. polytaenia species group, are described. Three groups of calling males were surveyed along a small stream, at the Estação de Pesquisa e Desenvolvimento Ambiental de Galheiro, Perdizes municipality, State of Minas Gerais, Brazil. The mean distance between the nearest calling neighbors was 2.7 m, in accordance with an uniform distribution. Clutches (mean 180 eggs) were deposited in the stream, submerged and attached to plants. In two observed courtships the female moved towards a calling male that rapidly clasped her. In the male-male interaction, the males emitted advertisement and encounter calls and then engaged in physical combat....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anura; Hyla; Behavior; Reproduction; Advertisement call.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100008

Diversity and population characteristics of terrestrial isopods (Crustacea, Oniscidea) across three forest environments in southern Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Bugs,Priscila da Silva; Araujo,Paula Beatriz; Mendonça Júnior,Milton de Souza; Ott,Ricardo.
Terrestrial isopods are important and dominant component of meso and macrodecomposer soil communities. The present study investigates the diversity and species composition of terrestrial isopods on three forests on the Serra Geral of the state of Rio Grande do Sul, Brazil. The area has two natural formations (Primary Woodland and Secondary Woodland) and one plantation of introduced Pinus. The pitfall traps operated from March 2001 to May 2002, with two summer periods and one winter. There were 14 sampling dates overall. Of the five species found: Alboscia silveirensis Araujo, 1999, Atlantoscia floridana (van Name, 1940), Benthana araucariana Araujo &amp;amp; Lopes, 2003 (Philoscidae), Balloniscus glaber Araujo &amp;amp; Zardo, 1995 (Balloniscidae) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Reproduction; Pinus sp; Plantation; Atlantoscia floridana; Balloniscus glaber.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000300009

Reproductive traits of Gymnogeophagus labiatus (Teleostei, Cichlidae), in an upper stretch of Sinos river, Caraá, Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Verba,Júlia T.; Lampert,Vinicius R.; Azevedo,Marco A.
This work describes the reproduction of Gymnogeophagus labiatus (Hensel, 1870) from an upper stretch of Sinos river, southern Brazil, based on the analysis of 174 males and 132 females captured in monthly samples taken from January to December 2007. Results showed that reproductive activity occur in spring and summer although ripe males were found along the year. The standard length of the smallest ripe male was 104.74 mm (Lt) and the smallest ripe female was 55.00 mm (Lt). There was a significant difference in total sex ratio, with 1.32 males to each female (χ2 = 5.76). Males were much more abundant in March (1.75 males: 1 female) and December (5 males: 1 female). Females were more abundant in the 62├77 mm interval (1 male: 2.36 female) while males were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cichlid; Neotropical; Reproduction; Fecundity; Oocyte development.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000200007

Aspects of biology of Megalobulimus paranaguensis (Gastropoda, Acavoidea) in the coastal plain of the Brazilian southeast
Provedor de dados: Iheringia Série Zoologia
Autores: Fontenelle,José H.; Miranda,Marcel S.
ABSTRACT We studied the reproductive biology of Megalobulimus paranaguensis (Pilsbry &amp; Ihering, 1900), a large and long-lived land gastropod from the Atlantic Rainforest of Brazil. The study was conducted at an urban park in the city of Santos, state of São Paulo. For 4 years, we counted the egg postures and annual eclosion rate of 32 captive snails and looked for associations between egg posture and the climatical variables of the period. The annual mean posture of 8.7 eggs per snail obtained in our results is a small number, but typical of Brazilian macromollusks. The annual eclosion rate was 31%. The beginning of the annual activity period of snails occurred in the middle of March, and lasted 33.97±3.02 weeks. The dormancy period started in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aruá-do-mato; Egg posture; Land snail; Atlantic Rainforest; Reproduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100204

Polyphasic growth in fish: a case study with Corydoras paleatus (Siluriformes, Callichthyidae)
Provedor de dados: Iheringia Série Zoologia
Autores: Barradas,José R. S.; Lermen,Isabel S.; Larré,Gabriel G.; Martins,Thaís P.; Fontoura,Nelson F.
ABSTRACT A weight-length relationship was established for Corydoras paleatus (Jenyns, 1842) (Siluriformes, Callichthyidae) (n=596) from samples taken in November-December 2009 and March-April 2010, in Pinguela Lagoon (29°46'57"S; 50°11'16"W), Rio Grande do Sul, Brazil. The species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function: W = a1Lb1 ∙ (1 + eRsc ∙ (L-SCP))-1 + a2Lb2 ∙ [1 - (1 + eRsc ∙ (L-SCP))-1] ; where W is the expected weight for a specific length L, a1 and a2 are the proportionality coefficients for stanzas 1 and 2, b1 and b2 are the allometric coefficients for stanzas 1 and 2, Rsc is the stanza changing rate for the switch function and SCP is the stanza changing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Length at first maturity; Reproduction; Sexual maturity; Length-weight relationship.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100217

Reproductive biology of Leptodactylus fuscus (Anura, Leptodactylidae) in the subtropical climate, Rio Grande do Sul, Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Maragno,Franciéle P.; Cechin,Sonia Z.
The aim of this study was to characterize, for the central region of the State of Rio Grande do Sul, Brazil, the reproductive biology of Leptodactylus fuscus (Schneider, 1799), based on the analysis of gonadal development of males and females, reproductive effort, size-fecundity relationships, and occurrence of sexual dimorphism in body size. Mature individuals were found from October 1996 to February 1997 and from October 1997 to December 1997. The highest input of juveniles in the population was recorded in March 1997. There was a positive and significant correlation between the number of mature individuals and the mean monthly temperature. The population did not present sexual dimorphism in size. Males presented significant correlation only between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Reproduction; Subtropical climate.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300002

Abundance, breeding and food of the Little Blue Heron Egretta caerulea (Aves, Ardeidae) in the Patos Lagoon estuary, a recently colonized area in southern Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Gianuca,Dimas; Gianuca,Andros T.; Vooren,Carolus M.
We document the expansion of the breeding distribution of the Little Blue Heron Egretta caerulea (Linnaeus, 1758) to 850 km beyond its previous southern limit in South America. In addition we present data on abundance, breeding biology and food of the species in the Patos Lagoon estuary, the area which the species recently colonized. The maximum abundance recorded in the breeding colony and in a nocturnal roosting site was 53 and 49 individuals respectively. Nesting occurred from September to March. Birds nested in a mixed breeding colony together with about 3,000 breeding pairs of seven other species of Pelecaniformes, in a swampy forest near the margin of the estuary. Five nests were between 1.5 and 4.3 m from the ground, on the shrub Daphnopsis racemosa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Herons; Reproduction; Rio Grande do Sul; Range expansion.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100003

Dinâmica reprodutiva de Oligosarcus jenynsii e O. robustus (Characiformes, Characidae) na lagoa Fortaleza, Rio Grande do Sul, Brasil
Provedor de dados: Iheringia Série Zoologia
Autores: Nunes,Daniela M.; Pellanda,Mateus; Hartz,Sandra Maria.
Oligosarcus jenynsii (Günther, 1864) and O. robustus Menezes, 1969 are fish species distributed in Rio Grande do Sul, Brazil, Uruguay, and northern Argentina. The reproductive period and recruitment, sex ratio, absolute and relative fecundity, and body length at first gonadal maturation of the two carnivorous species from Fortaleza Lagoon were analized. The specimens were sampled monthly, from May 2000 to April 2001, with fishing effort of 24 hours/month, using stationary gillnets of different mesh sizes and seine net (three samples per edge). The records of each individual included total length, total weight, gonad weight, sex and gonadal maturity stage. The reproductive period of both O. jenynsii and O. robustus ranges from May/June to November/December,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oligosarcus; Reproduction; Characidae; Southern Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100001

Reproductive ecology of the invader species gekkonid lizard Hemidactylus mabouia in an area of southeastern Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Anjos,Luciano A.; Rocha,Carlos Frederico D.
Hemidactylus mabouia Moreau de Jonnés, 1818 is a "fixed" clutch size exotic species well established in Brazil. In this paper we investigate some reproductive strategies adopted to minimize the costs of invariant clutch size to this invader species living in an environment with marked climatic seasonality in Southeastern Brazil (22°56’S; 46°55’W). The study was carried out from April 2002 to March 2003. Females and males attain maturity at 47.9mm and 46.9mm SVL, respectively. Larger females tended to produce larger eggs. The reproduction occurred throughout the year, but only at the wet season the females increase the clutch frequency. There was a significant variation in mean testis volume among the months throughout the year and the largest means were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemidactylus; Exotic species; Reproduction; Egg size relationships.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000200006

Estágios de desenvolvimento gonadal de fêmeas do camarão-barba-ruça (Artemesia longinaris - Decapoda: Penaeidae)
Provedor de dados: Iheringia Série Zoologia
Autores: Dumont,Luiz Felipe Cestari; D'Incao,Fernando.
The stages of gonadal development for the female of "barba-ruça" shrimp (Artemesia longinaris Bate, 1888) were characterized based on histological analysis. Four stages (immature, almost mature, ripe and spawned) were determined according to the structure and arrangement of cells in the ovary. Each stage corresponds macroscopically to a characteristic color, except stages I (immature) and IV (spawned), in which colors are very similar and can be distinguished only microscopically. The chromatic scale varies from white/translucent (stage I), neutral green (almost mature) to dark green (ripe). The mean size of cells was 56.9 µm (±3.5) (stage I), 127 µm (±2.6) (stage II) and 183 µm (±1.91) (stage III). The size frequency of cells was polimodal, and different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemesia; Shrimp; Reproduction; Gonadal histology.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000400006

Reproductive biology and sexual dimorphism in Cnemidophorus vacariensis (Sauria, Teiidae) in the grasslands of the Araucaria Plateau, southern Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Rezende-Pinto,Fabíola M.; Verrastro,Laura; Zanotelli,Juliana C.; Barata,Paulo C. R.
The reproductive cycle and sexual dimorphism of the lizard Cnemidophorus vacariensis Feltrim &amp;amp; Lema, 2000 were studied on the basis of data gathered between August 2004 and August 2006 in Vacaria, Rio Grande do Sul, Brazil. Snout-vent length (SVL) of sexually mature males varied between 48.8 and 72.9 mm (x = 63.3 ± 6.0 mm; n = 76) and, for females, between 57.4 and 81.8 mm (x = 70.0 ± 5.9 mm; n = 73). Other morphological characteristics were also compared between sexes. Reproduction was seasonal, and observations indicate two clutches in the same reproductive season. Clutch size and other reproductive characteristics were analyzed as well as the relation between reproduction and environmental factors. Cnemidophorus vacariensis is apparently endemic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Teiidae; Cnemidophorus vacariensis; Reproduction; Sexual dimorphism; Conservation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000100012

Reproductive biology of the sesarmid crab Armases rubripes (Decapoda, Brachyura) from an estuarine area of the Sahy River, Sepetiba Bay, Rio de Janeiro, Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Lima,Giovana V.; Soares,Marcelo R. S.; Oshiro,Lídia M.Y.
The aim of this work was to gain knowledge about reproductive biology of the crab Armases rubripes (Rathbun, 1897) from an estuarine area of the Sepetiba Bay. Samples were taken monthly from February 2003 to January 2004 in the Sahy River estuary (22º56'S; 44º01'W), Rio de Janeiro, Brazil. The crabs were collected by hand during 15-minute catch-effort sessions conducted by two people. In the laboratory, the specimens were separated by sex, carapace width was measured and gonadal stage was checked macroscopically. A total of 830 individuals were caught - 304 males, 373 females (60 ovigerous females) and 153 juveniles. The ovigerous females were found almost year-round, except in November and April, showing a continuous reproductive period. They presented a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crab; Sesarmidae; Fecundity; Reproduction; Sexual maturity.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000100007

Ecology and natural history of Akodon lindberghi (Rodentia, Sigmodontinae) in southeastern Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Queirolo,Diego; Granzinolli,Marco A. M.
We studied the ecology and natural history of the globally threatened and poorly known Akodon lindberghi Hershkovitz, 1990 in Parque Nacional da Serra da Canastra (PNSC) and Juiz de Fora (JF), southeastern Brazil. From November 1998 to September 2001 a total of 131 individuals were captured in wire-cage live-traps and 52 by pitfalls traps. They were all marked and released at the site. The largest abundances were registered during the dry season, and most of the captures occurred in open habitats. The mean body mass of the two populations was significantly different (18.1 g at PNSC versus 13.1 g at JF; H = 46.2678, g.l.=2, p&lt;0.001). In PNSC, individuals were reproductively active from August to February, and juveniles were present from May to August....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Akodon lindberghi; Reproduction; Abundance; Body mass; Population structure.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000200011

Microhabitats de mosquitos (Diptera, Culicidae) em internódios de taquara na Mata Atlântica, Paraná, Brasil
Provedor de dados: Iheringia Série Zoologia
Autores: Lozovei,Ana Leuch.
During two consecutive years, from January 1985 to December 1986, a comparative study of mosquitoes preferences for breeding habitat was carried out in the Atlantic Forest of the Serra do Mar, Paraná State, Brazil. To achieve it, 1875 bamboo internodes aligned vertically in live green, bamboo plants Merostachys speciosa Munro and Merostachys sp. were used, in which metabolic water was exuded from the plant itself, and presenting different size/pattern holes at their lateral walls, bored by the local sylvan fauna. Another group of 1200 individual internode traps was used as comparative element, carved out with a transversal cut by a saw, filled with local stream water and held in branches at different heights in the vegetal strata nearby. At both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culicidae; Reproduction; Bamboo internodes; Microhabitats.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100001

Reproductive modes and fecundity of an assemblage of anuran amphibians in the Atlantic rainforest, Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Hartmann,Marilia T; Hartmann,Paulo A; Haddad,Célio F. B.
Reproductive modes and size-fecundity relationships are described for anurans from Picinguaba, a region of Atlantic rainforest on the northern coast of the state of São Paulo, Brazil. We observed 13 reproductive modes, confirming a high diversity of modes in the Atlantic rainforest. This diversity of reproductive modes reflects the successful use of diversified and humid microhabitats by anurans in this biome. We measured the snout-vent length of 715 specimens of 40 species of anurans. The size-fecundity relationship of 12 species was analyzed. Female snout-vent lengths explained between 57% and 81% of clutch size variation. Anurans with aquatic modes laid more eggs than those with terrestrial or arboreal modes. Larger eggs were deposited by species with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Anura; Clutch size; Community.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300004

Reprodução de peixes (Osteichthyes) em afluentes do reservatório de Volta Grande, Rio Grande, Sudeste do Brasil
Provedor de dados: Iheringia Série Zoologia
Autores: Braga,Francisco Manoel de Souza.
The most abundant species caught in the tributaries of the Volta Grande dam, Buriti, Divisa and Água Comprida streams were Plagioscion squamosissimus (Heckel, 1840), Pimelodus maculatus Lacépède 1803, Myleus tiete (Eigenmann &amp;amp; Norris, 1900), Astyanax bimaculatus (Linnaeus, 1758) and A. fasciatus (Cuvier, 1819). Plagioscion squamosissimus and Pimelodus maculatus do not have reproduction activity in the area, they just use the creeks to food and growth. Myleus tiete and Astyanax bimaculatus use the area to reproduction whereas A. fasciatus uses it to reproduction, food and growth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Volta Grande dam; Reservoir.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200009

Avaliação do "efeito macho" no desempenho reprodutivo de fêmeas da raça Boer.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FARIAS, J. L. de S.; SANTOS, D. O.
bitstream/CNPC-2010/21859/1/cot96.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Caprino; Cabra; Reprodução animal; Eficiência reprodutiva; Goats; Reproduction; Reproductive performance; Brazil.
Ano: 2008
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/519047

Desempenho produtivo de ovinos deslanados da raça Santa Inês em pastagem de quicuio-da-amazônia (Brachiaria humidicola).
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: CARVALHO, L. O. D. de M.; COSTA, N. A. da; NASCIMENTO, C. N. B. do; TRISTÃO, D. de F.; PIMENTEL, E. S.
bitstream/item/57779/1/CPATU-PA132.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Ovino deslanado.; Eficiência Reprodutiva; Ganho de Peso; Peso ao Nascer; Reprodução.; Birth weight; Reproductive performance; Reproduction; Sheep; Weight gain.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383356

Efeito da injeção de vitamina A no desempenho reprodutivo de porcas.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SILVEIRA, P. R. S. da; FERNANDES, L. C. O.; BARIONI JUNIOR, W.; MORAES FILHO, J. C.
bitstream/item/58542/1/CUsersPiazzonDocuments219.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Sow.; Porca; Reprodução; Vitamina A.; Reproduction; Vitamin A.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433743

Adensamentos periódicos do rebanho bovino de corte no Pantanal e seus reflexos na eficiência reprodutiva: um relato.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ENCARNAÇÃO, R. de O.; SCHENK, J. A. P.; ALVES. R. G. de O.
Os adensamentos consistem em promover, periodicamente, rodeios (agrupar o rebanho de cria), sob a hipótese de que a aproximação de touros e vacas conduz a um maior índice de prenhez. Este trabalho teve como objetivo relatar a experiência de um estudo realizado para averiguar se essa pratica tem, efetivamente, o efeito esperado, bem como relatar as dificuldades encontradas. Foi conduzido numa propriedade particular representativa do Pantanal de Rio Verde de Mato Grosso, MS, no período de 1987 a 1990. Utilizaram-se 766 vacas neloradas e 46 touros da raça Nelore, mantidos em duas invernadas (pastagem nativa) de, aproximadamente, 1.500 hectares cada, cuja lotação foi de 3 hectares/unidade animal e a relação touro/vaca foi de 1:16. O ensaio envolveu dois...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Bovino de corte; Nelore; Mato Grosso do Sul; Brasil; Mangement.; Eficiência Reprodutiva; Manejo; Reprodução.; Nellore; Pantanal; Beef cattle; Brazil; Reproductive performance.; Reproduction.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325277

Anais.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SIMPÓSIO DO CENTRO NACIONAL DE PESQUISA DE SUÍNOS E AVES, 3.; SIMPÓSIO CATARINENSE DE SANIDADE SUÍNA, 2., 1983, Concórdia.
Doenças estéricas; Falhas na gestação e anestro; Doenças do sistema respiratório; Doença de Aujeszky e mioclonia congênita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Congresso; Disease; Meeting.; Doença; Reprodução; Suíno.; Reproduction; Swine.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/440549

Produtividade de caprinos e ovinos paridos na estação seca.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: BELLAVER, C.; ARRUDA, F. de A. V.; MORAES, E. A. de.
bitstream/item/26784/1/COT-01.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Estação de monta; Anglo Nubiana; Bhuj; Caninde; Morada Nova; Santa Inês; Brasil; Ceará; Caprino; Ovino; Eficiência reprodutiva; Reprodução animal; Goats; Sheep; Reproductive performance; Reproduction; Brazil.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514994

Manejo reprodutivo bovino: estudo de caso em propriedade.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SAUERESSIG; M. G.
bitstream/CPAC-2009/24744/1/bolpd_85.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Validacao; Management.; Gado de Corte; Manejo; Reprodução Animal; Tecnologia.; Taxa de Natalidade; Beef cattle; Birth rate; Innovation adoption; Reproduction; Technology transfer.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567834

Hormônios no diagnóstico de problemas reprodutivos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ELOY, A. M. X.
O proposito deste trabalho e fornecer maiores esclarecimentos sobre o aspecto pratico das analises hormonais em medicina veterinaria.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Hormônio animal; Reprodução animal; Endocrinologia; Caprino; Ovino.; Hormones; Endocrinology; Reproduction; Goats.; Sheep.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514290

Anais...
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SEMINÁRIO INTERNACIONAL SOBRE PIMENTA-DO-REINO E CUPUAÇU, 1., 1996, Belém, PA.
bitstream/item/63495/1/CPATU-Doc89.PDF
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Pimenta-do-reino; Melhoramento genético; Brasil; Cultural methods; Plant diseases.; Cupuaçu; Fruta; Doença; Mercado; Pratica Cultural; Piper Nigrum; Praga; Reprodução Vegetal; Theobroma Grandiflorum.; Tecnologia; Amazonia; Fruits; Marketing; Plant breeding; Reproduction; Pests; Technology.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/393602

Comportamento reprodutivo pós-parto em cabras Sem Raça Definida mantidas em pastagem nativa no Nordeste do Brasil.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ANDRIOLI, A.; SIMPLICIO, A. A.; MACHADO, R.
bitstream/item/36452/1/BP-14.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Sem Raça Definida (SRD); Brasil; Região Nordeste; Northeast; Reproductive behaviour.; Caprino; Reprodução animal; Pós-parto; Eficiência reprodutiva; Goats; Reproductive performance; Reproduction; Perinatal period; Brazil; Breeding.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514261

Inseminação Artificial Transcervical em Tempo Flexível (IATFx) em cabras leiteiras.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FONSECA, J. F. da.
Apresentar as melhores estratégias de preparação de cabras, nas diferentes estações do ano, e suas respectivas peculiaridades, que possam promover excelentes índices de sucesso (ges-tação) com o uso e aplicação correta da IA em cabras leiteiras criadas em ambiente tropical.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caprino; Cabra Leiteira; Sincronização do Cio; Reprodução Animal; Dairy goats; Reproduction; Artificial insemination.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1128197

A pesquisa e seus reflexos no desenvolvimento da pecuária bovina de corte.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: COSTA JÚNIOR, E. M. A.
Evolução dos conhecimentos. Área de pastagem e nutrição. Área de melhoramento genético. Área de sanidade animal. Área de reprodução. Área de economia rural.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovino de corte; Melhoramento genético; Sanidade; Economia rural; Brasil; Pasture; Health; Agricultural economic.; Historia; Pesquisa; Nutrição; Pastagem; Reprodução.; Brazil; Beef cattle; Breeding; History; Nutrition; Reproduction; Research.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/317575

Reprodução de Meloidogyne javanica em algumas plantas daninhas de ocorrência freqüente na Regiao Oeste do Brasil.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ASMUS, G. L; ANDRADE, P. J. M.
bitstream/item/39434/1/Cot19-97.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Planta daninha; Ocorrencia; Brasil; Regiao Oeste.; Cerrado; Meloidogyne Javanica; Nematóide; Planta Hospedeira; Reprodução.; Nematoda; Brazil; Reproduction; Savannas; Weeds.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/240757

Suínos: o produtor pergunta, a Embrapa responde.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: BONETT, L. P.; MONTICELLI, C. J.
Sistema de produção; Manejo; Nutrição e alimentação; Alimentos alternativos; Água; Secagem e armazenagem; Sanidade; Melhoramento genético animal; Instalações/equipamentos; Manejo de dejetos.
Tipo: Col Criar Plantar ABC 500P/500R Saber (INFOTECA-E)
Palavras-chave: Pig.; Alimentação; Carne; Melhoramento Genético Animal; Manejo; Reprodução; Sanidade Animal; Suíno; Tecnologia.; Breeding methods; Foods; Reproduction; Meat; Technology.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/98828

Isolamento, cultivo criopreservação de células somáticas de mamíferos silvestres para formação de um banco de germoplasma.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MARTINS, C. F.; CUMPA, H. C. B.; CUNHA, E. R. da; SILVA, C. G. da; GAMA FILHO, J. B. da; BORGES, L. A.
bitstream/item/100353/1/comtec-175.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Animal silvestre; Animal conservation; Genebank.; Criopreservação; Germoplasma; Mamífero.; Biotechnology; Cryopreservation; Reproduction; Wild animals.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/981278

Programa Nacional de Pesquisa-803: diversificação agropecuária: bubalinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: EMBRAPA. Centro de Pesquisa Agropecuária do Trópico Úmido.
bitstream/item/63461/1/CPATU-Doc48.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bubalino; Programa; Sanidade; Brasil; Program; Sanity; Draft animal; Production; Management.; Alimentação; Clima; Manejo; Melhoramento; Nutrição; Pesquisa; Reprodução; Produção; Tração Animal.; Feeds; Climate; Buffaloes; Breeding; Research.; Reproduction; Nutrition.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/387762

Guia prático do inseminador de caprinos e ovinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SANTOS, D. O.; SIMPLÍCIO, A. A.; MACHADO, R.
O objetivo desse trabalho e apresentar e discutir, de forma clara e simples, os aspectos que envolvem a inseminação artificial em caprinos e ovinos como prática rotineira de manejo reprodutivo em regiões tropicais. É enfatizado a importância que deve ser dada a nutrição e ao manejo sanitário, bem como, a idade e peso vivo dos animais quando da entrada na reprodução. É apresentado, ainda, os aspectos desde a colheita do sêmen e a sua manipulação, bem como, o emprego da inseminação artificial em nível de Unidade Produtiva, ou seja, da propriedade, inserida num programa de estação de monta. O intervalo entre partos e o tipo de exploração para produção de leite ou carne sao fatores relevantes que repercutem diretamente no sucesso da caprinovinocultura na visão...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Manejo reprodutivo; Reproduction control.; Caprino; Ovino; Inseminação artificial; Reprodução animal; Goats; Sheep; Reproduction; Artificial insemination.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/515305

Manual do inseminador de caprinos e ovinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MACHADO, R.; SIMPLÍCIO, A. A.
Historico; Conceito; Vantagens; Requisitos; Semen; Estudo anatomico e funcional do sistema genital feminino; Inseminacao artificial propriamente dita; Estacao de monta e sincronizacao do estro e ovulacao; Manejo do semen congelado, sua descongelacao e manuseio dos botijoes criobiologicos; Colocacao da dose e manejo do aplicador.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Caprino; Ovino; Inseminação artificial; Reprodução animal; Goats; Sheep; Artificial insemination; Small ruminants; Reproduction.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514294

Avaliação dos efeitos de baixas concentrações do nonilfenol etoxilado sobre a reprodução do caramujo aquático Biomphalaria tenagophila: um estudo multigeração.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: OLIVEIRA-FILHO, E. C.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R.
bitstream/CPAC-2009/27870/1/p2006_79.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Caramujo; Organismo Aquático; Reprodução; Toxicologia.; Aquatic organisms; Reproduction; Toxicity; Toxicology.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/556636

Manejo reprodutivo de caprinos e ovinos de corte em regiões tropicais.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SIMPLÍCIO, A. A.; SALLES, H. O.; SANTOS, D. O.; AZEVEDO, H. C.
Este trabalho tem como objetivo apresentar e discutir práticas de manejo aplicados a exploracão racional de caprinos e ovinos para corte em regiões tropicais. Ressalta a importância que deve ser dada a nutrição e a saúde, bem como a idade a primeira cria, a sobrevivência das crias e ao intervalo entre partos, elementos importantes para a produtividade de caprinos e ovinos explorados para produção de carne e peles.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Manejo reprodutivo; Caprino de corte; Ovino de corte; Reprodução animal; Sheep; Goats; Reproduction.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/528564

Caprino-ovinocultura de corte: manejo reprodutivo e sua importância para o sucesso da exploração.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SIMPLICIO, A. A.; SIMPLICIO, K. M. de M. G.
bitstream/item/52256/1/PL-Aurino.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Manejo reprodutivo; Caprino; Ovino; Reprodução animal; Criação; Goats; Sheep; Animal husbandry; Reproduction.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/576802

Efeitos de moluscicidas e poluentes ambientais sobre a reproducao e o desenvolvimento de caramujos aquaticos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: OLIVEIRA FILHO, E. C.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R.
bitstream/CPAC-2009/24321/1/p2003_09.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: TOXCOL100; Noxious molluscs.; Caramujo; Impacto Ambiental; Molusco Nocivo; Moluscicida; Organismo Aquático; Reprodução; Toxicologia.; Biomphalaria; Aquatic organisms; Environmental impact; Reproduction; Toxicology.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567622

Fenologia reprodutiva de espécies florestais da Amazônia.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: GARCIA, L. C.; LIMA, D. de.
Estudo sobre a fenologia de reproducao de especies arboreas (angelim-pedra, copaiba, cupiuba, jatoba, louro-gamela) no Amazonas, visando garantir o estoque regular de semente e atender as necessidades de formacao de mudas dos programas de reflorestamento. Angelim-pedra produz inumeros sementes, que sao dispersas pelo vento; copaiba produz numerosas sementes, que sao dispersas por aves; cupiuba, apesar de produzir bem anualmente, tem suas sementes em estagio de maturacao muito predadas por aves; jatoba tem frutificacao escassa e irregular, os macacos sao os principais predadores; louro-gamela frutifica abundantemente, suas sementes sao relativamente pequenas, o que dificulta a coleta, e os animais predadores alimentam-se dos frutos ainda verde. De acordo...
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Angelim-pedra; Nectandra rubra; Louro-gamela; Brasil; Amazonas; Manaus.; Árvore; Cupiúba; Copaíba; Copaifera Multijuga; Dinizia Excelsa; Fenologia; Essência Florestal; Goupia Glabra; Jatobá; Reprodução; Semente.; Hymenaea; Forest trees; Phenology; Reproduction; Seeds.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/666484

Cuidados com fêmeas caprinas durante a prenhez e o parto.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SILVA, E. R. da.
bitstream/item/26719/1/COT-54.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Manejo reprodutivo; Brasil; Ceará; Caprino; Reprodução animal; Prenhez; Parto; Goats; Reproduction; Pregnancy; Parturition.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/515275

Técnica Embrapa de inseminação artificial transcervical em caprinos por meio de fixação cervical.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FONSECA, J. F. da; ALVIM, G. P.; LOBO, A. M. B. O.; FACO, O.
bitstream/item/57083/1/CT-43.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Fixação cervical; Caprino; Reprodução animal; Inseminação artificial; Goats; Reproduction; Artificial insemination.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/921532

Manejo em suinocultura: aspectos sanitarios, reprodutivos e de meio ambiente.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SOBESTIANSKY, J.; WENTZ, I.; SILVEIRA, P. R. S. da; LIGNON, G. B.; BARCELLOS, D. E. S. N.; PIFFER, I. A.
Aspectos sanitarios relacionados com o leitao desde o nascimento ate o abate; Aspectos sanitarios relacionados com a femea reprodutora; Aspectos sanitarios relacionados com o reprodutor; Aspectos sanitarios de carater geral; Controle de endoparasitas; Controle de ectoparasitas; Introducao de animais em uma granja; Utilizacao de vacinas; Programa de limpeza e desinfeccao; Efeito de fatores ambientais na ocorrencia de doencas.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Doencas; Management; Diseases.; Manejo; Meio Ambiente; Reprodução; Suíno.; Environment; Reproduction; Swine.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/435563

Centro Nacional de Pesquisa de Gado de Corte: trabalhos em andamento e tecnologias disponíveis.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MARIANTE, A. da S.; GOMES, M. C. F.
Alimentação dos rebanhos. Melhoramento animal. Difusão de tecnologia.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovino de corte; Melhoramento genético; Sanidade; Economia Rural; Brasil; Research projet; Feeding; Management; Health; Diffusion of research.; Alimentação; Cerrado; Difusão de Tecnologia; Manejo; Projeto de Pesquisa; Reprodução; Tecnologia.; Agricultural economics; Breeding; Beef cattle; Brazil; Reproduction; Technology.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/317915

Como escolher matrizes e reprodutores caprinos ou ovinos para seu rebanho.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MONTEIRO, A. W. U.
ODS.
Tipo: Folhetos
Palavras-chave: Manejo reprodutivo; Agenda 2030; Caprino; Ovino; Reprodução; Acasalamento; Matriz; Goats; Sheep; Reproduction.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1148898

Biotecnologias da reprodução em ovinos e caprinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FONSECA, J. F. da.
bitstream/CNPC/20258/1/doc64.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Caprino; Ovino; Reprodução animal; Biotecnologia; Goats; Sheep; Reproduction.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/533329

Ovinocultura: princípios básicos para sua criação (Raça e manejo reprodutivo).
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: GIRARDI, J. L.
Tipo: Folhetos
Palavras-chave: Yield; Management; Criação; Manejo; Ovino; Raça; Reprodução; Reproduction; Sheep.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687523

Infra-estrutura e equipamentos simples para enraizamento de estacas.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MÜLLER, C. H.; KATO, A. K.
bitstream/item/40406/1/CircularTec44-ok.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Estação; Agricultural mechanization; Plant; Pole; Agricultural equipment.; Enraizamento; Equipamento Agrícola; Mecanização Agrícola; Planta; Reprodução.; Reproduction; Rooting.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383850

Efeito de duas concentrações de cama de aviário sobre a reprodução de Meloidogyne javanica e o crescimento de plantas de tomateiro.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ASMUS, G. L.; ANDRADE, P. J. M.
bitstream/item/39648/1/PA-5-1998.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Animal litter.; Cama de Galinheiro; Cerrado; Nematóide; Meloidogyne Javanica; Reprodução; Tomate; Solo.; Nematoda; Reproduction; Tomatoes; Soil.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/241127

Manejo reprodutivo bovino: estudo de caso em nível de propriedade.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SAUERESSIG, M. G.
bitstream/item/75924/1/bolpd-39.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Validação; Management.; Cerrado; Gado de Corte; Manejo; Reprodução Animal; Taxa de Natalidade; Tecnologia.; Beef cattle; Birth rate; Innovation adoption; Reproduction; Technology transfer.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/550785

Seleção do sêmen de reprodutores portadores do vírus da artrite encefalite caprina através da técnica de reação em cadeia da polimerase.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ANDRIOLI, A.; GOUVEIA, A. M. G.; PINHEIRO, R. R.
A partir de 1976, importações de caprinos de raças exóticas, procedentes de vários países, buscaram a introdução de potencial genético leiteiro, tendo ocorrido também a efetiva introdução de agentes infecciosos no Brasil pela importação de caprinos sem adequados critérios sanitários, com consequente dispersão de doenças infecciosas entre os rebanhos nacionais, dentre elas a CAE - artrite encefalite caprina. Os avanços das técnicas de conservação de sêmen, aliados ao aumento da importância econ0mica da caprinocultura favorecem o seu intercâmbio nacional e internacional. Somando-se a isto, a inseminação artificial possibilita a concepção de um expressivo número de fêmeas, num curta intervalo de tempo, no entanto, pouco se sabe do risco da transição de...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: CAEV; Artrite Encefalite Caprina; Caprine arthritis encephalit virus; Semen diluents.; PCR; Caprino; Reprodução animal; Sêmen; Seleção; Transmissão de doença; Goats; Reproduction; Disease transmission; Infection.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/531309

Técnicas de manejo reprodutivo em bovinos de corte.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: VALLE, E. R. do; ANDREOTTI, R.; THIAGO, L. R. L. de S.
Na pecuária de corte, a exploração comercial do sistema de cria se constitui na fase do sistema produtivo, que envolve a criação e o manejo não só das matrizes bovinas e seus respectivos bezerros ate a desmama, mas também das novilhas de reposição e dos touros. Esse sistema tem por objetivo a produção de bezerros desmamados que representa a maior fonte de receita do criador. A venda de vacas descartadas e outros animais, apesar de contribuírem para a produção total, e uma fonte de receita marginal, mas também muito importante para o criador. Portanto, a viabilidade do sistema vai depender da eficácia e eficiência com que são utilizados os meios disponíveis para a otimização da produtividade. O escopo deste trabalho foi o de apresentar e discutir as...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovino de corte; Estação de monta; Sanidade; Breeding seasouns; Nutritional requirements; Management.; Acasalamento; Eficiência Reprodutiva; Exigência Nutricional; Prenhez; Reprodução; Desmama.; Animal health; Copulation; Beef cattle; Reproduction; Pregnancy; Reproductive performance; Weaning.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325118

Biotécnicas da reprodução animal aplicadas à conservação de cervídeos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ZÚCCARI, C. E. S. N.; SERENO, J. R. B.
The present work aimed to present a literature research about two deer species - Blastocerus dichotomus (llliger, 1815) - Cervo-do-pantanal and Ozotocerus bezoarticus (Linnaeus, 1758) - Veado-campeiro, due to their importance in Central Brazil. The main aspects studied were: species biology, density and populational distribution; factors related to their decreased numbers; and the use of biotechniques of animal husbandry for propagation and conservation of deer, as environmental compensation. Using available data in the literature, it is possible to realize that depending on the region studied, both deer species showed population fluctuation in the past years. Apart local population density, both are part of the red data book on native Brazilian species of...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cervo; Preservação; Preservation.; Biologia Animal; Densidade Demográfica; Reprodução Animal; Veado.; Cervidae; Demography; Reproduction; Zoology.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570264

Avaliação de reprodutores das raças Pardo Alpina, Saanen e Anglo-Nubiana para a produção de leite através do teste de progênie.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ARAUJO, A. M. de; ELOY, A. M. X.
bitstream/item/26707/1/COT-40.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Pardo Alpina; Anglo-Nubiana; Brasil; Ceará; Buck; Performance testing.; Caprino; Reprodutor; Reprodução animal; Produção Leiteira; Teste de Progênie.; Goats; Reproduction; Progeny testing; Milk production; Brazil; Saanen.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514972

Teste de avaliação do metabolismo espermático em ovinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ELOY, A. M. X.; FURTADO, J. R.
Apresenta técnicas adotadas para avaliação da qualidade do sêmen, uma que seja de alta precisão, de simples adoção e que não requeira treinamento especializado, favorecendo as atividades de veterinários e de criadores de ovinos.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Metabolismo espermatico; Resazurin teste; Quality.; Ovino; Reprodução animal; Eficiência reprodutiva; Sêmen; Qualidade; Sheep; Reproduction; Reproductive performance.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/533314

Método de TÚNEL: uma ferramenta alternativa para avaliar a integridade do DNA de espermatozóides bovinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MARTINS, C. F.; DODE, M. N.; BÁO, S. N.; RUMPF, R.
ABSTRACT: The success of the assisted reproductive techniques (ART) in both humans and domestic animals depends of the semen quality. Since there is no test that alone can predict sperm fertility, as more sperm parameters are analyzed during evaluation, more acurated will the result. The evaluation of the DNA integrity during the exam of bovine fresh and frozen sperm is of fundamental importance to avoid embryonic losses. The terminal deoxynucleotidyl transferase mediated dUTP nick end labeling assay (TUNEL) has been an efficient method to detect sperm DNA fragmentation, avoiding problems of embryonic development and decrease of the animal reproductive efficiency. This work presents and describes with the TUNEL technique (principles, advantages and...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovinae.; Bovino; DNA; Espermatozóide; Genética Animal; Reprodução Animal.; Genetics; Reproduction; Spermatozoa.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/571981

Estratégias para aumento da eficiência reprodutiva e produtiva em bovinos de corte.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: VALLE, E. R. do; ANDREOTTI, R.; THIAGO, L. R. L. de S.
Na pecuária de corte, a exploração comercial do sistema de cria se constitui na fase do sistema produtivo, que envolve a criação e o manejo não só das matrizes bovinas e seus respectivos bezerros ate a desmama, mas também das novilhas de reposição e dos touros. Esse sistema tem por objetivo a produção de bezerros desmamados que representa a maior fonte de receita do criador. A venda de vacas descartadas e outros animais, apesar de contribuírem para a produção total, e uma fonte de receita marginal. Portanto, a viabilidade do sistema vai depender da eficácia e eficiência com que são utilizados os meios disponíveis para a otimização da produtividade. O escopo deste trabalho foi o de apresentar e discutir as principais praticas de manejo reprodutivo, que...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovino de corte; Estacao de monta; Novilha; Sanidade; Eficiência; Calf; Health; Management; Production.; Acasalamento; Bezerro; Desmama; Manejo; Reprodução; Produção; Vaca.; Touro; Beef cattle; Bulls; Heifers; Copulation; Cows; Reproduction; Reproductive performance; Weaning.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/321581

Toxicidade reprodutiva do agrotoxico endosulfan para caramujos aquaticos: estudo em duas geracoes de Biomphalaria tenagophila.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: OLIVEIRA FILHO, E. C.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R.
bitstream/CPAC-2009/24322/1/p2003_10.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: TOXCOL100.; Caramujo; Endosulfan; Inseticida; Impacto Ambiental; Organismo Aquático; Reprodução; Toxidez.; Toxicologia; Aquatic organisms; Environmental impact; Insecticides; Reproduction; Toxicity; Toxicology.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567625

[Anais...].
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: CONGRESSO INTERNACIONAL DE REPRODUÇÃO SEXUAL EM PLANTAS, 20., 2008, Brasília, DF.
Resumos.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Plant.; Planta; Reprodução Sexuada; Reprodução Vegetal.; Reproduction; Sexual reproduction.
Ano: 2008
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/175605

Biotecnologias aplicadas à reprodução de ovinos e caprinos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FONSECA, J. F. da; CRUZ, R. do C.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G. de; VIANA, J. H. M.
A criação de caprinos e ovinos é uma atividade agropecuária de elevada importância social, econômica e consolidada em determinadas regiões do Brasil, enquanto em outras, mostra-se em fase emergente. Diversos aspectos apontam para o desenvolvimento desta cadeia produtiva no país. Dentre eles, a produção nacional, especialmente de carne e leite, sequer abastece o mercado interno, mesmo considerando que o consumo ainda é reduzido em relação a outros países. Em função da qualidade e diferencial dos produtos de origem caprina e ovina, acredita-se que em pouco tempo a demanda aumentará expressivamente, requerendo sistemas de criação focados na produtividade. Assim, torna-se fundamental desenvolver e adequar tecnologias voltadas ao incremento produtivo. Para...
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Transferência nuclear; Cloning.; Biotecnologia; Caprino; Clonagem; Inseminação artificial; Ovino; Reprodução animal; Sêmen.; Goats; Biotechnology; Reproduction; Sheep; Transgenic animals.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1027956

Reprodução no macho caprino: análise básica e aplicada.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: PAULA, N. R. de O.; ANDRIOLI, A.; CARDOSO, J. de F. S.; SANTOS, D. de O.; ELOY, A. M. X.
A reprodução de pequenos ruminantes é dependente de diversos eventos fisiológicos e ambientais, assim como da harmonia dos manejos nutricionais e sanitários dos rebanhos. O conhecimento consorciado da reprodução do macho caprino, unindo avaliações básicas já existentes às práticas aplicadas a campo, torna-se de fundamental relevância para que profissionais, produtores e acadêmicos das ciências agrárias possam visualizar esta área da Medicina Veterinária de uma forma mais ampla e completa. O conhecimento de eventos fisiológicos e sua aplicação prática na utilização de exames diagnósticos, que visem à seleção de reprodutores caprinos para centrais de inseminação artificial ou mesmo que visem ? seleção de reprodutores para a utilização em programas de...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Macho.; Caprino; Reprodução Animal.; Goats; Reproduction.
Ano: 2008
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/534117

Superovulação em cabras e ovelhas mediante o uso de diferentes protocolos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SANTOS, D. O.; SIMPLICIO, A. A.; WANDERLEY, A. A. D.; SOUZA, T. E. F. de.
bitstream/item/26651/1/PA-34.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Caprino; Ovino; Reprodução animal; Superovulação; Goats; Sheep; Reproduction; Superovulation.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/515277

Desempenho produtivo e reprodutivo de búfalas em sistema integrado de pastagens nativa e cultivada.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: LOURENÇO JUNIOR, J. de B.; COSTA, N. A. da; RODRIGUES FILHO, J. A.; CAMARAO, A. P.; MARQUES, J. R. F.; CARVALHO, L. O. D. de M.; NASCIMENTO, C. N. B. do; HANTANI, A. K.
bitstream/item/32714/1/CPATU-BP141.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Bubalino; Eficiência; Buffalo; Efficiency; Native pasture; Cultivated pasture; Production.; Ganho de Peso; Pastejo; Pastagem Cultivada; Pastagem Nativa; Produção; Reprodução.; Grazing; Reproduction; Weight gain.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380536

Efeitos do endosulfan sobre o desempenho reprodutivo do Caramujo Biomphalaria tenagophila: resultados preliminares.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: OLIVEIRA FILHO, E. C. de; HOLANDA, I. L. de; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R.
bitstream/CPAC-2009/24124/1/p2002_02.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: TOXCOL100.; Caramujo; Endosulfan; Impacto Ambiental; Inseticida; Organismo Aquático; Reprodução; Toxicologia.; Aquatic organisms; Environmental impact; Insecticides; Reproduction; Toxicology.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567426

Suivi de la reproduction de l'huître creuse Crassostrea gigas dans la partie nord du bassin charentais
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Fillon, Alain.
The Charente-Maritime coast has, on its northern part, between the Charente estuary and the northern boundary of the department (Isle of Ré included), many sites which interest the oyster culture industry, especially as far as juvenile collection is concerned. The well-known centre of Fouras is one of them. To help the professionals, and for its own purposes, the Ifremer studies the periods of emission of cupped oyster larvae in order to let the oyster farmers know about the best collection times. Contractualized for the first time in 1996 between the SRC FIE-Centre Ouest and the Ifremer, this work has been carried out again in 1997 by the DEL coastal laboratory of La Rochelle, following the renewal of this contract. This report presents the different...
Tipo: Text
Palavras-chave: Captage; Marennes Oléron; Crassostrea gigas; Larves; Reproduction.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/rapport-6568.PDF

Temporal variability in the Pacific oyster spatfall along the French Coast: a new monitoring project
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pouvreau, Stephane; Maurer, Daniele; Auby, Isabelle; Soletchnik, Patrick; Mille, Dominique; Bernard, Ismael; Bedier, Edouard.
In France, spatfall of Pacific Oysters occurs traditionally in two shellfish area of the south west of France: the Marennes-Oléron bay and the Arcachon basin. The spat collected in both sites ensures approx. 70 % of the need of the French oysters production (the other part is produced in hatcheries). But, since ten years, recruitment have become highly variable especially in Arcachon basin. For instance, in this site, spatfall (assessed at the end of the reproductive season) can vary between 50 oysters per collector to more than 20 000 oysters per collector (Figure 1). This huge variation arise questions from oysters producers and the French National Committee for Shellfish Culture want to get some explanations of the phenomenon. It is well known that...
Tipo: Text
Palavras-chave: Larvae; Reproduction; Recruitment; Spatfall; Crassostrea gigas.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/acte-4543.pdf

Rapport d'activité année 1977 du Laboratoire de Biologie Conchylicole de La Rochelle
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dardignac, Marie-jose.
Rapport d'activité du Laboratoire de Biologie Conchylicole de La Rochelle concernant l'année 1977
Tipo: Text
Palavras-chave: Conchyliculture; Reproduction; Estimation stocks; Valorisation claires ostréicoles; Parasite; Pathologie; Crassostrea gigas; Mytilus edulis; Pertuis Breton.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/00070/18092/15640.pdf

Upstream migration and reproductive patterns of a population of allis shad in a small river (L'Aulne, Brittany, France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Acolas, M; Veron, V; Jourdan, H; Begout, Marie-laure; Sabatie, M; Bagliniere, J.l.
The characteristics and activity of adult allis shad [Alosa alosa (L.)] were analysed during the last part of their upstream migration in the L'Aulne, a small river in Brittany, and during reproduction on a unique spawning ground downstream of an insurmountable dam. The age of the spawners ranged front three to seven years, females being larger and older than males. Population-level migration and reproduction were studied by counting the number of migrating fish, by estimating the sex ratio, and by counting the number of nocturnal spawning acts for three consecutive years starting in 2000. The influence of the environment, especially water temperature and discharge, was highlighted: temperature during migration may supplant the influence of water flow,...
Tipo: Text
Palavras-chave: Small river; Reproduction; Biological features; Anadromous migration; Allis shad.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1214.pdf

Crepidula fornicata L. dans le bassin de Marennes-Oléron - Rapport préliminaire 1982
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Deslous Paoli, Jean-marc.
Des prélèvements dans le bassin de Marennes-Oléron ont permis de localiser les fortes charges de Crepidula fornicata L. principalement dans le centre du bassin (le long du banc de Charret et dans le courant d'Oléron). En ces deux points la charge fraîche cumulée a été estimée à environ 2 700 tonnes. La structure de population fait apparaître une croissance moyenne de 20, 19, 17 et 12 millimètres respectivement pour les 1ère, 2ème, 3ème et 4ème années avec une variabilité très importante dès la première année. 74,5% des animaux constituent des chaines primaires d'en moyenne six individus fixés sur des coquilles de crépidules mortes. La période de reproduction s'étale vraisemblablement du mois d'avril au mois de septembre et 25% des individus portent des...
Tipo: Text
Palavras-chave: Crepidula fornicata; Population; Croissance; Reproduction; Marennes Oléron.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/00092/20356/18017.pdf

Contrôles de la distribution spatiale de l'habitat de reproduction chez les populations de poissons. Approche multi-modèles appliquée à la plie et au merlan de Mer du Nord et à l'anchois du Golfe de Gascogne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Loots, Christophe.
Spawning is a crucial phase of fish life cycle as it ensures the renewal of individuals in the population. The identification of factors that influence its spatial dynamic is therefore a key feature as it will affect the reproduction success of fish population. A multi-model approach has been developed in order to identify factors that control the spatial distribution of spawning adults of plaice and whiting in the North Sea and of anchovy in the Bay of Biscay. Generalised additive models have been used to relate presenceabsence of adults and their abundances to several hypotheses of control external (geographical position and environment) and internal to the population (spatial dependency, size, age structure and memory). Models were then ranked according...
Tipo: Text
Palavras-chave: Anchovy; Whiting; Plaice; Multi model approach; Hypotheses of control; Habitat; Spawning; Anchois; Merlan; Plie; Approche multi modèles; Hypothèses de contrôle; Habitat; Reproduction.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/these-7400.pdf

Ecophysiologie de la reproduction chez l'huître creuse, Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pouvreau, Stephane; Lepennec, M.
The reproductive cycle of Megathura crenulata was documented and quantification of oocyte lipid reserves with lipo-specific stains was explored in both this species and in Crassostrea gigas. The necessity of providing food to female broodstock C. gigas in spring was re-evaluated, because subsequent larval and post-larval rearing performance was not affected by broodstock starvation during conditioning. Developmental study of the organs responsible of particle processing in C. gigas allowed the identification of critical stages related to the ontogenesis of each organ, as well as a better understanding of the evolution of these organs, highly-modified in the Ostreidae. Ciliary type identification and mucocyte mapping from post-larval to adult stage showed...
Tipo: Text
Palavras-chave: Mucocytes; Mantle; Gill; Larvae postlarvae juveniles; Feeding; Crassostrea gigas; Megathura crenulata; Development; Reproduction; Mucocytes; Manteau; Branchie; Larves post larves juvéniles; Alimentation; Crassostrea gigas; Megathura crenulata; Développement; Reproduction.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/rapport-1867.pdf

Acquis biologique sur le pétoncle noir (Chlamys varia) en Rade de Brest 1973-1983. Conséquences sur l'aménagement de la ressource
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dao, Jean-claude; Gerard, Andre; Buestel, Dominique.
Research on the black scallop followed that on the king scallop. Indeed, over the 1973-1975 " spadework » period, it has been demonstrated that the roadsted of Brest was: - an overexploited king scallop deposit; the broodstock not being able to ensure a satisfying renewal of the species. - a black scallop production deposit (hundreds of tonnes). In parallel, the collection trials provided null results for the king scallop but very interesting results for the black scallop (thousands of spats per collector). From 1976 onwards, the spat collecting operations did not focus on king scallop juveniles anymore, but on black scallop.
Tipo: Text
Palavras-chave: Reproduction; Captage; Physiologie; Pétoncle; Chlamys varia.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-6538.pdf

Gonad volume assessment in the oyster Crassostrea gigas: Comparison between a histological method and a Magnetic Resonance Imaging (MRI) method
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Flahauw, Emilie; Quellec, Stephane; Davenel, Armel; Degremont, Lionel; Lapegue, Sylvie; Hatt, Philippe-jacques.
Previous studies comparing Crassostrea gigas selected lines with different susceptibility to summer mortality concluded that the higher the reproductive effort the lower the survival. But theywere lacking individual followup of this reproductive effort which would be of great interest to help us to understand the physiology of the oysters facing summermortalities. Themost frequently usedmethod for assessing the volume of the gonad is to measure the area it occupies on histological sections. Gonad measurement by magnetic resonance imaging, in contrast, is non-destructive and therefore makes it possible to assess individual evolution as well as to compare individuals. The present study compared the values of gonad volume by thismethodwith the values of gonad...
Tipo: Text
Palavras-chave: Oyster; Crassostrea gigas; Reproduction; Histology; Magnetic resonance imaging; MRI.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00102/21309/19410.pdf

Assessment and interpretation of temporal or spactial differences in shellfish productivity of typical French ecosystems
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mazurie, Joseph; Soletchnik, Patrick; Ropert, Michel; Fleury, Pierre-gildas; Auby, Isabelle; Maurer, Daniele; Bacher, Cedric.
Monitoring of Crassostrea gigas performances, from two year-classes, during 12 years, in various French shellfish farming areas have revealed great inter-annual and inter-sites differences in reproduction, growth, mortality or quality of oysters (meat content, Polydora infestation...). The presentation attempts to highlight how a comparative analysis of existing temporal or spatial data on molluscs, water quality, geography or meteorogoly may help to better understand and manage shellfish ecosystems. The range of hydrobiological conditions (food availability, turbidity, temperature...) recorded at national, pluriannual scale, in relation to shellfish performances, enlarges the base of such relationship. However, undirect causative factors, either natural...
Tipo: Text
Palavras-chave: Climatic modulation; Hydro geography; Reproduction; Growth; Spatial differences; Water quality; Mortality; Shellfish productivity.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/acte-3318.pdf

Etat d'avancement des travaux sur les poissons tropicaux en Martinique
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick; Thouard, Emmanuel; Galllet De Saint-aurin, D.; Suquet, Marc; Hurtaud, P.; Mesdouze, J. P.
Ce document se compose de 3 publications :  - overview of the studies conducted on the finfish, Palometa (Trachinotus goodei), in Martinique,  - spawning of palometa (Trachinotus goodei), in capacity, - spawning of yellowtail snapper (Ocyurus chrysurus ; Bloch, 1791) in capacity.  Cette dernière publication, résume l'essentiel des informations obtenues sur la sarde et présentées d'une façon exhaustive dans le document scientifique n°9.  Les 2 premières publications de ce document, consacrées à la carangue, font état des derniers résultats acquis sur cette espèce.
Tipo: Text
Palavras-chave: Aquaculture; Poissons tropicaux; Elevage; Maturation; Reproduction; Trachinotus goodei; Ocyurus chrysurus; Martinique; Aquaculture; Tropical finfishs; Rearing; Maturation; Reproduction; Trachinotus goodei; Ocyurus chrysurus; Martinique.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00131/24262/22258.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1962
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire de La Tremblade concernant l'année 1962
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1962
URL: http://archimer.ifremer.fr/doc/00069/18060/15604.pdf

Observations relatives à une expérience de reproduction artificielle des huîtres du Pacifique (Crassostrea gigas Thunberg)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Comps, Michel.
The artificial production of oyster spats in Japan and the USA provided inspiration to some French oyster farmers who thought that, at a time when stocking up Crassostrea gigas spats was getting more difficult, it would be interesting to try out the nutrition techniques developed by Japanese and American specialists. In this way, in La Tremblade, in the Marennes basin, M. Paul Jarno set up some structures aimed at artificial oyster reproduction. Trials started in 1968 and continued in July 1969. The first step was to assess the material and structures' usability and to take a closer look at the practical larval nutrition conditions in order to obtain fixed spats. This document is a collection of the observations carried out during the different trials.
Tipo: Text
Palavras-chave: Reproduction artificielle; Larves; Naissain; Reproduction; Crassostrea gigas; Huître.
Ano: 1970
URL: http://archimer.ifremer.fr/doc/1970/publication-6285.PDF

Préparation des collecteurs - tuiles : un essai de lutte contre la fixation des salissures
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Dantec, Jean.
Les ostréiculteurs du bassin d'Arcachon utilisent pour la récolte du naissain des tuiles demi-cylindriques d'une surface voisine de 17dm2. Elles sont traditionnellement recouvertes d'un enduit dont la composition est très variable. La "baille à mortier" permet de traiter 1.000 tuiles. Voici deux exemples concrets du mélange utilisé.
Tipo: Text
Palavras-chave: Huître; Reproduction; Collecteur; Tuile; Fixation naissain.
Ano: 1956
URL: http://archimer.ifremer.fr/doc/00004/11477/8036.pdf

Approches bibliographique et expérimentale de méthodes permettant d'évaluer l'état de maturité sexuelle des bivalves
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Thielley, Maryse.
A l'heure actuelle, l'objectif des éc10series d'huîtres est d'atteindre une autonomie d'approvisionnement en larves quelle que soit la saison et donc d'étaler les émissions de gamètes sur toute l'année. A la suite de problèmes rencontrés pour atteindre cet objectif, il s'est avéré nécessaire d'entreprendre des études sur les méthodes à mettre en oeuvre pour contrôler la qualité de la reproduction en écloserie et notamment l'état de maturité des géniteurs. Notre étude porte sur ce dernier point. Une étude bibliographique présente les différentes méthodes plus ou moins précises, actuellement utilisées pour contrôler l'état de maturité des gonades de bivalves. La majorité d'entre elles nécessite le sacrifice d'animaux. Une approche expérimentale portant...
Tipo: Text
Palavras-chave: Crassostrea gigas; Bivalves; Reproduction; Maturité sexuelle; Biopsie.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00419/53094/54051.pdf

Expérience de repeuplement des fonds à partir de produits d'écloserie
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Audouin, Jacques; De Kergariou, Gabriel.
Over the last decades, the fishing effort focused on crustaceans and especially on the lobster has continued to increase. This way, the number of pots used by each boat has grown from a few dozen to several hundred. This process lead to an overexploitation of the seabed and the catches do not go over 400 tonnes/years despite the increase of the means involved. Consequently, it has been necessary to implement a number of new measures to protect the lobster stock, and some restricted areas have been created off the French coasts.
Tipo: Text
Palavras-chave: Homard; Crustacés; Ecloserie; Reproduction; Repeuplement.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/1977/acte-6578.PDF

Dispersion larvaire et cycle de vie dans les environnements hydrothermaux profonds : le cas de Rimicaris exoculata et d'espèces proches
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Hernandez Avila, Ivan.
Deep-water hydrothermal vent host high-biomass communities based on chemoautotrophy supported by the metabolic activity of free-living and symbiotic bacteria associated to invertebrates, especially megafauna. Knowledge on the mechanisms of dispersal and the life cycle of vent species is essential to our understanding of the vent communities in terms of distribution, structure and temporal variation. In this study, I present some advances regarding the dispersal and life cycle of a dominant species of the Mid-Atlantic Ridge (MAR) vent ecosystems, the alvinocaridid shrimp Rimicaris exoculata, and other related species. The methodological approaches applied include morphological descriptions of larvae, analysis of population biology and reproduction, and...
Tipo: Text
Palavras-chave: Sources hydrothermales profondes; Cycle de vie; Structure de population; Symbiose; Crevettes Alvinocarididae; Deep-water hydrothermal vents; Life cycle; Population structure; Reproduction; Dispersal; Symbiosis; Speciation.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00498/60927/64321.pdf

La reproduction des mollusques bivalves en écloserie
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Devauchelle, Nicole.
Optimal gametogenesis and egg-laying environment, fertility, number of egg-layings, reproductor ageing, relationship between parent characteristics and conditioning and farming success, are the main issues considered by bivalve hatcheries each time the reproduction of a species is taken care of. Even if there is still very little bibliographic data on this precise field, reproduction mechanisms have been studied for decades in Mytilidae and Ostreidae. Largely cultivated in open sea, they are indeed an experimental material of choice. In this paper, we will see how the acquired knowledge and the methods developed on this material can be used to carry out a study on bivalve reproduction in hatcheries.
Tipo: Text
Palavras-chave: Ecloserie; Reproduction; Mollusque; Ostreidae; Mytilidae.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-6196.PDF

Suivi de la reproduction des mollusques d'élevage 1991
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Faury, Nicole; Ratiskol, Jacqueline.
Les conditions météorologiques semblaient cette année à priori favorables à la reproduction des moules. Cependant, le maturation des gonades a été très lente. Ainsi, les premières pontes, de faible importance, ont eu lieu début Avril. Plusieurs émissions tardives sont apparues fin Mai et se sont poursuivies jusqu'au début du mois de Juillet. Elles n'ont pas été importantes et ont conduit à une faible quantité de larves au stade fixation. Un captage "moyen" a été observé début Mai. Ensuite, la présence de quelques larves grosses n'a pas permis un recrutement suffisant. Généralement, suite à la période de reproduction les moules reconstituent rapidement leur réserve; or cette année, elles sont restées maigres jusqu'à la fin Juillet. Le fort déficit...
Tipo: Text
Palavras-chave: Reproduction; Captage; Naissain; Crassostrea gigas; Marennes Oléron; Mytilus edulis.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00072/18285/15857.pdf

In Vivo RNA Interference of a Gonad-Specific Transforming Growth Factor-beta in the Pacific Oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Huvet, Arnaud; Fleury, Elodie; Corporeau, Charlotte; Quillien, Virgile; Daniel, Jean-yves; Riviere, Guillaume; Boudry, Pierre; Fabioux, Caroline.
We investigated the role of oyster gonadal TGF beta (og-TGF beta) in the reproduction of Crassostrea gigas, using an in vivo RNA interference approach. We designed double-stranded RNA targeting og-TGF beta, which is specifically expressed in the somatic cells surrounding germ cells in the gonad of both male and female oysters. In vivo injection of this og-TGF beta dsRNA into the gonad led to knock-down phenotypes for both sexes, with significant reduction (77.52% relative to controls) of the gonad area, lowered reproductive effort and germ cell under-proliferation. Interestingly, half of the injected females halted their vitellogenesis, since we were only able to observe pre-vitellogenic oocytes. In addition, apoptotic germ cells and haemocytes infiltrated...
Tipo: Text
Palavras-chave: Marine bivalve; Crassostrea gigas; Reproduction; RNA interference; Transforming growth factor-beta.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00087/19794/17486.pdf

Rapport sur l'activité du laboratoire de La Tremblade - Année 1968
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade - Année 1968
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1968
URL: http://archimer.ifremer.fr/doc/00069/18050/15592.pdf

Traditional oyster culture in France
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heral, Maurice.
The indigenous oyster of mainland France, the fiat oyster, Ostrea edulis has been part of the human diet for centuries. The Romans collected them and exported them to Rome. Although tanks for holding oysters after harvesting were in use at that time (GreIon 1978) it seems that true culture was not developed along the coast contrary to the records of Pliny the Older. It appears that oysters were already being captured on hoards off the Italian coast. The exploitation of natural stocks continued through the Middle Ages and the Renaissance. However, it was not until the 17th century that oyster culture began, first in the pools of the salt marshes of the Atlantic coast and then in specially managed ponds. Papy (1941) repeats a good description given in 1688...
Tipo: Text
Palavras-chave: Rearing; Diseases; Analytical model; Overall model; Cultured stocks; Energetics; Reproduction; Nutrition; Physiology; France; Culture; Oyster.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/publication-3039.pdf

Lipid composition of the giant lion's-paw scallop (Nodipecten subnodosus) in relation to gametogenesis - I. Fatty acids
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Palacios, Elena; Racotta, I; Kraffe, E; Marty, Y; Moal, Jeanne; Samain, Jean-francois.
Seasonal variations in fatty acid composition in several tissues of a 1-year-old population of giant lion's-paw scallop Nodipecten subnodosus were analyzed during gonad development. Samples were taken bimonthly from December 1999 to June 2000, a period in which gonad development was occurring. Fatty acid accumulation in neutral and polar lipids of the female gonad was concomitant to the gonad development and presented a maximum in June. Among essential fatty acids, a specific accumulation was observed only for 20:5n - 3 in the female gonad, as suggested by an increase in its proportion in the neutral and the polar fractions. However, no specific accumulation was observed for 22:6n - 3, as its proportion remained relatively constant in both fractions. We...
Tipo: Text
Palavras-chave: Reproduction; Pectinidae; HUFA; EPA; DHA; Arachidonic acid.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-767.pdf

Condition corporelle et conséquences sur la plasticité des traits d’histoire de vie chez les petits pélagiques de Méditerranée
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Brosset, Pablo.
Multiple changes have been described since 2008 in the Gulf of Lions ecosystem and particularly in small pelagic fish dynamic. In particular, the two main exploited species, i.e. anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) are now smaller and in poor condition while a third species, the sprat (Sprattus sprattus) strongly increased in terms of biomass and abundance. This PhD thesis investigated these changes through the analysis of small pelagic fish body condition (i.e individual energy stores) variations, its causes and consequences. Anchovy and sardine body condition was optimal in 2005 and 2006 and decreased after 2008 to remain steady at low level since 2010. Moreover, older sardine have particularly displayed poor body condition...
Tipo: Text
Palavras-chave: Condition corporelle; Traits d’histoire de vie; Reproduction; Body condition; Life-History traits; Reproduction.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00498/60928/64322.pdf

Développement et survie larvaire chez Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard.
L'huître japonaise, Crassostrea gigas a été introduite dans les centres conchylicoles français principalement à partir de 1971, à la suite de l'épizootie qui a affecté C. angulata. Très rapidement cette nouvelle espèce a colonisé les zones estuariennes du littoral Atlantique français laissées vacantes par l'huître portugaise ; elle se reproduit de l'estuaire de la Bidassoa à celui de la Loire, plus occasionnellement jusqu'en Rade de Brest (LUCAS, communication personnelle). L'influence des principaux facteurs de milieu sur l'embryogénèse et la vie larvaire sera précisée. A l'aide d'exemples précis, celle des facteurs anthropiques sera mise en évidence ; enfin seront exposées les orientations des recherches qui sont développées à Arcachon, à la suite des...
Tipo: Text
Palavras-chave: Huître creuse; Crassostrea gigas; Développement larvaire; Reproduction.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/00016/12705/9627.pdf

Characterization of a gonad-specific transforming growth factor-beta superfamily member differentially expressed during the reproductive cycle of the oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fleury, Elodie; Fabioux, Caroline; Lelong, C; Favrel, P; Huvet, Arnaud.
Through differential screening between oyster families selected for high and low summer survival, we have characterized a new transforming growth factor-beta (TGF-beta) superfamily member. This novel factor, named oyster-gonadal-TGF beta-like (og-TGF beta-like), is synthesized as a 307 amino acid precursor and displays 6 of the 7 characteristic cysteine residues of the C-terminal, mature peptide. Sequence comparison revealed that og-TGF beta-like has a low percentage of identity with other known TGF-beta superfamily members, suggesting that og-TGF beta-like is a derived member of this large superfamily. Real-time PCR (RT-PCR) analysis in different oyster tissues showed that og-TGF beta-like is specifically expressed in both male and female gonads, at...
Tipo: Text
Palavras-chave: Reproduction; Oyster; Gene expression; Transforming growth factor; Bivalve mollusc.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-3899.pdf

Etude comparative des caractéristiques écophysiologiques et des performances de croissance de l'huître creuse Crassostrea gigas diploïde et triploïde en milieu contrôlé
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Haure, Joel; Fortin, Adeline; Dupuy, Beatrice; Nourry, Max; Palvadeau, Hubert; Papin, Mathias; Penisson, Christian; Martin, Jean-louis.
Introduction: Marine farming in France is currently very widely dominated by oyster farming. French oyster production totals 148,467 tons, for a turnover of close to 280 million euros, making France the leading European producer. The two main species concerned are the cup oyster, Crassostrea gigas (140,000 tons) and the flat oyster, Ostrea edulis (2,000 tons), the production of which has collapsed since 1970 following successive epizootics of Marteilia refringens and Bonamia ostreae. French oyster farming is thus in a situation of quasi single-crop farming, with more than 90% of tonnage pertaining to the cup oyster (FAO data from 1993).  This situation of quasi single-crop farming leads to the pessimistic observation that one hypothetical crisis in the...
Tipo: Text
Palavras-chave: Growth; Ecophysiology; Oyster; Crassostrea Gigas; Eeproduction; Milieu Controle; Croissance; Triploide; Diploide; Ostreidae; Huitre; Crassostrea Gigas; Ecophysiologie; Reproduction.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-1509.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1961
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire de La Tremblade année 1961
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1961
URL: http://archimer.ifremer.fr/doc/00069/18059/15603.pdf

La détection des pontes dans le milieu naturel : application de l'ostréographie à l'étude de la reproduction des huîtres
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard.
L'activité valvaire particulière qui accompagne la ponte chez les Crassostrea sp. permet de déceler le frai de ces huîtres. La possibilité de contrôler le comportement des mollusques par ostréographie dans le milieu naturel, est mise à profit pour déterminer la date exacte du frai. Les résultats ainsi obtenus renforcent les indications fournies par les données traditionnelles des examens de maturité sexuelle et de numération de larves dans le plancton . Un exemple basé sur les observations réalisées au cours de la saison de reproduction de 1974 dans le bassin d'Arcachon le confirme.
Tipo: Text
Palavras-chave: Ostréographie; Reproduction; Crassostrea gigas; Huître.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/acte-7375.pdf

L'adaptation ecophysiologique et sanitaire de l'ecrevisse turque Astacus leptodactylus a des milieux saumatres: Contribution a l'astaciculture
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Barbe, D; Lautier, J; Vernet, G; Vey, A.
This influence of salt media on different aspects of biological cycle and on most common pathogenic agents of Turkish freshwater crayfish Astacus leptodactylus is investigated survival and growing of juveniles O super(+) and intermediary individuals 1 super(+) are also studied. Total osmotic metabolism and reproduction, have been recorded. It appears that youngest individuals are particularly sensitive to low salinities (7 ppt.). Intermediary ones are more resistant nevertheless salinity does not improve neither survival nor growing. Copulation, laying and pleopod egg fixation are particularly affected by salt waters. The only promising application of salinity parameter on astaciculture could be whether prophylactic or curative treatment with concentrated...
Tipo: Text
Palavras-chave: Astacus leptodactylus; Malacostraca; Infectious diseases; Sexual reproduction; Growth; Mortality; Survival; Osmotic adaptations; Crayfish culture; Pathology; Metabolism; Salinity; Ecophysiology; Astaciculture; Régulation osmotique; Reproduction; Survie; Croissance; Pathologie; Ecophysiologie; Salinité; Astacus leptodactylus; Ecrevisse.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1185.pdf

Suivi de la reproduction de l'huître creuse Crassostrea gigas Secteur de Fouras 2000
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
In the framework of the actions conducted by the Ifremer for Regional Shellfish Culture Section of Ré Centre-Ouest in 2000, the DEL coastal laboratory of La Rochelle carried out a monitoring of the reproduction of the cupped oyster "Crassostrea gigas" in Fouras. This report briefly presents the obtained results.
Tipo: Text
Palavras-chave: Marennes Oléron; Captage; Crassostrea gigas; Huîtres; Reproduction.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/rapport-6572.PDF

Impact of nine macroalgal diets on growth and initial reproductive investment in juvenile abalone Haliotis tuberculata
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Roussel, Sabine; Caralp, Claire; Leblanc, Catherine; Le Grand, Fabienne; Stiger-pouvreau, Valerie; Coulombet, Céline; Le Goïc, Nelly; Huchette, Sylvain.
The commercial culture of Haliotis tuberculata has recently started in Europe. As abalone is herbivorous, the use of local collected algae as feed may appear advantageous. The nutritional value of eight monospecific seaweed diets was studied using Palmaria palmata (Rhodophyta), filamentous algae, mainly Gracilaria sp. (Rhodophyta), Enteromorpha sp. and Ulva lactuca (Chlorophyta), together with Saccharina latissima, Saccorhiza polyschides, Laminaria digitata and Laminaria hyperborea (Ochrophyta, Phaeophyceae) and a mixed macroalgal diet. An integrative approach consisted in monitoring the seasonal composition changes of these algae in terms of protein, lipid, soluble carbohydrate, fatty acid and amino-acid contents, and to relate it to seasonal growth and...
Tipo: Text
Palavras-chave: Abalone; Algae; Reproduction; Growth; Protein.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00509/62066/66246.pdf

Identifying Robust Proxies of Gonad Maturation for the Protandrous Hermaphrodite     Tridacna maxima     (Röding, 1798, Bivalvia) from Individual to Population Scale
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Menoud, Mathilde; Van Wynsberge, Simon; Le Moullac, Gilles; Levy, Peva; Andrefouet, Serge; Remoissenet, Georges; Gaertner-mazouni, Nabila.
Monitoring gonadmaturation for protandrous and functional hermaphrodite species such as the giant clamTridacna maxima is difficult due to the juxtaposition and relative proportion ofmale and female tissues in the gonad [gonadal sex ratio (GSR)]. Here, the relevance of the widely used gonadosomatic index (GSI) as proxy of giant clam gonad maturation is tested with a large dataset (n = 265). Gonadosomatic index is compared with other indices, namely the proportion of the male part harboring spermatozoids, the proportion of empty oocyte follicles, the mean oocyte diameter, and the oocyte elongation. At gonad scale, high index variability highlighted partial spawning. At individual scale, male and female maturation proxies were contrasted, showing either...
Tipo: Text
Palavras-chave: Giant clam; Marine bivalve; Reproduction; Spawn; Tatakoto atoll; Histology; Tridacna maxima.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00333/44441/44111.pdf

Aspects on gametogenesis, fertilization and embryogenesis of two deep-sea polychaetes from Eastern Atlantic cold seeps
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gaudron, S. M.; Hourdez, S.; Olu, Karine.
We investigated two gonochoristic species of annelid polychaetes (one siboglinid and one polynoid) from cold seeps that ranged from 525 m to 3300 m in depth (Guiness, Worm Hole and Regab pockmarks) on the Gabon and Congo continental margins (Gulf of Guinea). Different aspects of gametogenesis (oocyte diameter, presence of ovisac, spermatozoa shape, and fecundity), fertilization (in vitro fertilization experiments: IVF) and embryogenesis (cleavage rate) were studied. The sampled siboglinid was a new species of Lamellibrachia and the second population of this genus in the Eastern Atlantic. Mean oocyte diameter was about 100 µm and fully-grown primary oocytes were stored in an ovisac, as in other studied siboglinids. The presence of a single spermatozoon was...
Tipo: Text
Palavras-chave: Branchipolynoe; Cold seeps; Dispersal; Lamellibrachia; Polynoid; Reproduction; Siboglinid.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00405/51644/52192.pdf

Growth and mortality of the European oyster Ostrea edulis in the Bay of Arcachon (France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Robert, René; Borel, Michel; Pichot, Yves; Trut, Gilles.
A study of the growth and mortality of the European oyster Ostrea edulis , including the effects of Marteilia refringens and Bonamia ostreae , was carried out in three oceanic areas in the Bay of Arcachon from May 1989 to February 1991. One-year-old spat, free from disease were used for the trials. Six months after beginning the trials, Marteilia refringens had severely infested the cultures. Although Bonamia ostreae was found during the first year, the rate of infestation was low. In the second year bonamiasis increased and high mortality (&gt; 60%) occurred in Ostrea edulis populations. Although the growth of the oysters was good, their condition index was generally poor. Moreover, shell perforations by Polydora sp. were observed. The influence of...
Tipo: Text
Palavras-chave: Ostrea edulis; Pathologie; Mortalité; Croissance; Reproduction; Composition biochimique; Bassin Arcachon; Ostrea edulis; Pathology; Mortality; Growth; Reproduction; Gross biochemical composition; Bay of Arcachon.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00015/12600/9477.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Biologie conchylicole - Année 1953
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade, biologie conchylicole concernant l'année 1953
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Reproduction; Claires ostréicoles; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1953
URL: http://archimer.ifremer.fr/doc/00069/18064/15608.pdf

Contribution a l'etude de l'atresie ovocytaire chez Serranus cabrilla en captivite.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Febvre, Michèle.
The oocyte atresia are studied in captive Serranus cabrilla Linne, and compared to the atresia which occur during corresponding cycle periods. Whereas physiological atresia are difficult to reveal, atresia in captivity depend on the capture period, laboratory conditions and on the duration of the experiment. The oocyte modifications are described and discussed.
Tipo: Text
Palavras-chave: Serranus cabrilla; Ovaries; Reproduction; Captivity; Diseases; Physiology.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2024.pdf

Suivi de la reproduction des mollusques d'élevage 1989
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Faury, Nicole; Ratiskol, Jacqueline.
La reproduction des mollusques dans le bassin de Marennes Oléron a été soumise à des conditions météorologiques particulières. A un hiver 88 - 89 très doux très faiblement pluvieux a suivi un printemps chaud et précoce. Seul Avril a connu une pluviométrie supérieure à la normale qui n'a pas suffi à compenser le manque d'eau consécutif à plusieurs mois de sécheresse. Les pêches et lectures ont été réalisées par les méthodes utilisées les années précédentes
Tipo: Text
Palavras-chave: Reproduction; Larves; Crassostrea gigas; Mytilus edulis; Marennes Oléron.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00049/16070/13531.pdf

Influence de l'environnement trophique de l'élevage en biofloc sur les performances physiologiques de la crevette Litopenaeus stylirostris : Étude de paramètres de la nutrition, de l'immunité et de la reproduction
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cardona, Emilie.
Biofloc is an intensive rearing system with zero or minimal water exchange where a diverse population of microorganisms (microalgae, zooplankton and bacteria) develops in association with organic matter to form the floc particles. These particles play the double role of biological filter and dietary supplement. This dissertation aims to better understand the process of this rearing system and its interactions with the Litopenaeus stylirostris shrimp. Two specific objectives were integrated within the framework of this general objective: (i) to measure the production gain from biofloc rearing and (ii) to study the interaction between biofloc environment and shrimp and to assess its role on production performances of shrimps. Thus, our results show...
Tipo: Text
Palavras-chave: Biofloc; Crevette; Nutrition; Stress oxydant; Défenses antioxydantes; Immunité; Reproduction; Oeufs; Larves; Bactéries; Microbiote; Biofloc; Shrimp; Nutrition; Oxidative stress; Antioxidant defences; Immunity; Reproduction; Eggs; Larvae; Bacteria; Microbiota.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00272/38294/36492.pdf

Suivi de la reproduction des huîtres - Saison 1998
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Faury, Nicole; Bouquet, Jean-paul.
Le suivi de la reproduction des huîtres s'est déroulé du 22 juin au 3 septembre 1998. Six points du bassin de Marennes-Oléron sont à nouveau concernés : En Charente: La Mouclière et Les Palles. Au centre du Bassin: Les Doux et Mérignac; En Seudre: Coux et les Faulx. Cette opération est contractualisée avec la Section Régionale de Marennes-Oléron.
Tipo: Text
Palavras-chave: Reproduction; Larves; Huîtres; Crassostrea gigas; Bassin de Marennes Oléron.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00049/16067/13528.pdf

Rapport sur l'activité du laboratoire de La Tremblade - Année 1960
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade année 1960
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1960
URL: http://archimer.ifremer.fr/doc/00069/18054/15596.pdf

Suivi de la reproduction des mollusques d'élevage 1988
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heurtebise, Serge; Ratiskol, Jacqueline.
L'année 1988 n'a pas offert de conditions hydrobiologiques et climatiques favorables à une reproduction normale des huîtres en élevage dans le bassin de Marennes-Oléron. L'hiver doux et particulièrement pluvieux a apparemment modifié le cycle classique de la gamétogénése et par suite le captage des huîtres dans son ensemble. Le présent rapport est le constat de ce phénomène.
Tipo: Text
Palavras-chave: Reproduction; Captage; Naissain; Crassostrea gigas; Mytilus edulis; Marennes Oléron.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00072/18286/15858.pdf

Microarray-Based Identification of Gonad Transcripts Differentially Expressed Between Lines of Pacific Oyster Selected to Be Resistant or Susceptible to Summer Mortality
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fleury, Elodie; Moal, Jeanne; Boulo, Viviane; Daniel, Jean-yves; Mazurais, David; Henaut, Alain; Corporeau, Charlotte; Boudry, Pierre; Favrel, Pascal; Huvet, Arnaud.
Summer mortality of the Pacific oyster Crassostrea gigas is the result of a complex interaction between oysters, their environment, and pathogens. Heredity appears to be a major factor determining the sensitivity of oysters to summer mortality, allowing resistant (R) and susceptible (S) lines to be produced. We conducted genome-wide expression profiling of R and S gonads during the 3-month period preceding a summer mortality event, using a cDNA microarray that we designed. ANOVA analysis revealed that 34 genes were differentially expressed between R and S lines on four dates preceding the mortality event. Annotation of some of these genes highlights reproduction and its allocation and antioxidant defenses as the main pathways that operate differentially...
Tipo: Text
Palavras-chave: Mollusca; Bivalvia; Gene expression; CDNA microarrays; Reproduction; Oxidative stress; Energy metabolism.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00005/11590/8258.pdf

Evaluation de la survie du naissain de captage naturel chez l'huître creuse Crassostrea gigas en fonction de la période des pontes à partir de lots sélectionnés pour les caractères de survie et efforts de reproduction
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Degremont, Lionel; Bordeyne, Francois; Yonneau, Caroline; Maurouard, Elise; Nourry, Max.
Depuis 2008, les mortalités touchant le naissain Crassostrea gigas sont particulièrement élevées en France (&gt;70%), fragilisant de nombreuses entreprises ostréicoles. Cependant, une voie de sortie de crise proposée dès 2001 est la mise en place de programmes de sélection pour l’amélioration de la survie suite à la mise en évidence de la forte héritabilité de ce caractère au stade naissain chez C. gigas (Dégremont et al., 2007 ; Dégremont et al., 2010a). Ainsi, des familles d’huîtres C. gigas présentant des survies contrastées au stade naissain ont été reproduites et maintenues depuis 2002 par le Laboratoire de Génétique et Pathologie à la station Ifremer de La Tremblade. Ces lots d’huîtres ont été nommés « R » et « S » respectivement pour leur meilleure...
Tipo: Text
Palavras-chave: Génétique; Sélection génétique; Naissain; Huîtres creuses; Crassostrea gigas; Reproduction.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00065/17643/15179.pdf

A Functional Study of Transforming Growth Factor-Beta from the Gonad of Pacific Oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Corporeau, Charlotte; Groisillier, Agnes; Jeudy, Alexandra; Barbeyron, Tristan; Fleury, Elodie; Fabioux, Caroline; Czjzek, Mirjam; Huvet, Arnaud.
The transforming growth factor (TGF)-beta superfamily is a group of important growth factors involved in multiple processes such as differentiation, cell proliferation, apoptosis and cellular growth. In the Pacific oyster Crassostrea gigas, the oyster gonadal (og) TGF-beta gene was recently characterized through genome-wide expression profiling of oyster lines selected to be resistant or susceptible to summer mortality. Og TGF-beta appeared specifically expressed in the gonad to reach a maximum when gonads are fully mature, which singularly contrasts with the pleiotropic roles commonly ascribed to most TGF-beta family members. The function of og TGF-beta protein in oysters is unknown, and defining its role remains challenging. In this study, we develop a...
Tipo: Text
Palavras-chave: Transforming growth factor-beta; Bacterial expression; In vivo antibody inhibition; Reproduction; Crassostrea gigas; Marine bivalve.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00042/15371/13438.pdf

Seamount egg-laying grounds of the deep-water skate     Bathyraja richardsoni
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Henry, L. -a.; Stehmann, M. F. W.; De Clippele, L.; Findlay, H. S.; Golding, N.; Roberts, J. M.
Highly localized concentrations of elasmobranch egg capsules of the deep-water skate Bathyraja richardsoni were discovered during the first remotely operated vehicle (ROV) survey of the Hebrides Terrace Seamount in the Rockall Trough, north-east Atlantic Ocean. Conductivity–temperature–depth profiling indicated that the eggs were bathed in a specific environmental niche of well-oxygenated waters between 4·20 and 4·55° C, and salinity 34·95–35·06, on a coarse to fine-grained sandy seabed on the seamount's eastern flank, whereas a second type of egg capsule (possibly belonging to the skate Dipturus sp.) was recorded exclusively amongst the reef-building stony coral Solenosmilia variabilis. The depths of both egg-laying habitats (1489–1580 m) provide a de...
Tipo: Text
Palavras-chave: Deep sea; Elasmobranch; Environment; Habitat; Reproduction.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00344/45508/45061.pdf

BABE : Comparaison des sites de Ronce et Baie de Veys, incidence sur la reproduction et les mortalités : Ecologie côtière, mortalités, croissance, environnement - Physiologie - Immunologie
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole; Guilpain, Patrice; Geairon, Philippe; Razet, Daniel; Seugnet, Jean-luc; Robert, Stephane; Ropert, Michel; Simonne, Charlotte; Hugonnet, Virginie; Moal, Jeanne; Pouvreau, Stephane; Huvet, Arnaud; Samain, Jean-francois; Lambert, Christophe; Soudant, Philippe; Frouel, Stephane; Choquet, Gwenaelle; Delaporte, Maryse; Paillard, Christine.
Four laboratories are involved in this multidisciplinary study: the Conchological Laboratory of Normandie (LCN), the Invertebrates Physiology Laboratory (LPI), the Université Bretagne Occidentale (LEMAR IHP) and the Conchological Laboratory of Poitou-Charentes (LCPC). The part of the study which is presented here (thematics "Coastal ecology") was produced in collaboration with the LCN. The data on the Bay of Veys was collected by Michel Ropert. This study aims at observing the "sites" effect on mortality and on the general biology of the animal, as well as measuring some environmental elements (e.g. water temperature, etc.). The geographical sites are Gefosse in the Bay of Veys (East Cotentin) and the Ronce bank in the south of the Marennes Oléron Bay. The...
Tipo: Text
Palavras-chave: Immunologie; Physiologie; Paramètres environnementaux; Croissance; Ecologie côtière; Baies des Veys Cotentin; Ronce   Charente Maritime; Comparaison sites; Reproduction; Mortalités; Crassostrea gigas; Huîtres.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/acte-3405.pdf

Etude et modélisation des mécanismes impliqués dans la croissance de l'huître perlière, Pinctada margaritifera, au sein de l'écosystème conchylicole du lagon de l'atoll de Takapoto (Polynésie Française)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pouvreau, Stephane.
L'huître perlière, Pinctada margaritifera (Linné, 1758) var. cumingi (Reeve), productrice de perles noires, fait l' objet d'une aquaculture florissante en Polynésie Française. Afin de pérenniser cette activité, un programme de recherche (le PGRN) a été lancé, en 1990, sur l' atoll de Takapoto. L' un des thèmes de ce programme réside dans l'étude de la capacité trophique d'un lagon soumis à une activité de perliculture. A cet égard, un modèle déterministe expliquant la croissance et la reproduction de P. margaritifera à partir des paramètres du milieu (notamment la nourriture disponible) a été mis au point. La construction de ce modèle a impliqué : ( 1) l'analyse de l'hydrobiologie du lagon; (2) l'étude de la physiologie de P. margaritifera; (3) le sui vi...
Tipo: Text
Palavras-chave: Bivalves; Huîtres perlières; Pinctada margaritifera; Physiologie; Croissance; Reproduction; Hydrobiologie; Atoll; Lagon; Écosystème; Réseau trophique; Modélisation; Capacité trophique; Polynésie française; Bivalves; Pearl oyster; Pinctada ma rgaritifera; Physiology; Growth; Reproduction; Hydrobiology; Atoll; Lagoon; Ecosystem; Trophic web; Modelling; Carrying capacity; French Polynesia.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00034/14558/11856.pdf

Effects of an environmentally relevant concentration of diuron on oyster genitors during gametogenesis: responses of early molecular and cellular markers and physiological impacts
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Akcha, Farida; Barranger, Audrey; Bachere, Evelyne; Berthelin, C. Heude; Piquemal, D.; Alonso, P.; Sallan, R. Rondon; Dimastrogiovanni, G.; Porte, C.; Menard, Dominique; Szczybelski, A.; Benabdelmouna, Abdellah; Auffret, M.; Rouxel, Julien; Burgeot, Thierry.
Genitors of the Pacific oyster Crassostrea gigas were submitted during gametogenesis to a short pulse exposure to the herbicide diuron at a realistic environmental concentration. Histological analysis showed no effect of diuron on gametogenesis course, sex ratio and reproductive effort. A non-significant increase in testosterone and progesterone levels was observed in genitors exposed to the herbicide. At cell level, diuron exposure was shown to modulate the phagocytic activity of circulating hemocytes. The results of a transcriptional analysis showed that diuron affected the expression of genes belonging to functions known to play a major role during oyster gametogenesis such as gene transcription regulation, DNA replication and repair, DNA methylation...
Tipo: Text
Palavras-chave: Oyster; Pesticide; Reproduction; Histology; Gene expression; RT-qPCR; Steroid; Immunity.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00309/41983/83232.pdf

Les différents systèmes de collecteurs de naissain
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boury, Maurice.
Le naissain est récolté sur des matériaux très variés : pierres, coquilles, bois, tuiles non chaulées, tuiles chaulées. De plus, le même matériel peut être disposé de façons différentes. Exemple : coquilles étalées sur le fond et coquilles assemblées en chapelets et suspendues dans l'eau.
Tipo: Text
Palavras-chave: Huître; Reproduction; Naissain; Collecteur; Recrutement.
Ano: 1929
URL: http://archimer.ifremer.fr/doc/00005/11586/8212.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1956
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1956
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1956
URL: http://archimer.ifremer.fr/doc/00069/18068/15612.pdf

Some aspects of the abnormal mortalities of the pearl oysters, Pinctada margaritifera in the Tuamotu Archipelago, (French Polynesia)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cabral, P.
The black-lip pearl oyster Pinctada margaritifera lives and reproduces with high performance in most of Tuamotu Lagoons. Technics to collect spats, to culture juveniles and to operate oysters were quickly found and applicated. Nevertheless, the sudden rise of this activity has been correlated with an anarchic development. For instance, large occupation of areas in the lagoons, cultivation of numerous oysters in confined areas, lack of knowledge on the basis culture technics in many farms. In 1985, mass mortalities have appeared in some lagoons and 50 to 80% of cultured stock died. Some investigations have been done but no explanation was found. In 1988, the mortalities are still very high. An analysis of cooperative production results from 1979 to 1988...
Tipo: Text
Palavras-chave: Pinctada margaritifera; Bivalvia; Spat; Juveniles; Oyster culture; Reproduction; Pearl culture; Pearl oysters; Mortality.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1484.pdf

Niveau de ploïdie des huîtres des bassins de captage de Marennes-Oléron et Arcachon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cornette, Florence; Grouhel, Stephanie; Sharbel, Tim; Boudry, Pierre; Goulletquer, Philippe; Lapegue, Sylvie.
La mise en place du réseau « biovigilance » résulte des recommandations formulées dans le cadre de l’expertise indépendante demandée par le Comité Scientifique du Ministère de l’Agriculture et de la Pêche concernant « l’effet d’un flux éventuel d’huîtres tétraploïdes dans les zones conchylicoles ». Il avait été alors préconisé de réaliser « une biovigilance légère, avec mesure régulière du taux d’huîtres tétraploïdes dans les bassins conchylicoles ». Le sous-projet « Réseau biovigilance » s’inscrit dans le projet Ifremer « Typologie et surveillance des systèmes de productions aquacoles » du programme de recherches «Durabilité des systèmes de production » du thème « Surveillance et optimisation des productions aquacoles ». Ce réseau a pour objectif d’être...
Tipo: Text
Palavras-chave: Reproduction; Captage; Arcachon; Marennes Oléron; Génétique; Crassostrea gigas; Ploïdie; Huîtres.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00043/15445/12815.pdf

Suivi de la reproduction dans le bassin de Marennes-Oléron : de la moule, Mytilus edulis et  de l'huître, Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Malestroit, Pascale; Piquet, Jean-come; Kantin, Roger.
Dans le cadre de la contractualisation Ifremer / SRC intitulée « Actions de l'Ifremer au profit de la Section Régionale Conchylicole de Marennes-Oléron (année 2001) », l'action 3 prévoit le suivi de la reproduction de la moule (Mytilus edulis) et de l'huître (Crassostrea gigas) dans le bassin de Marennes-Oléron.  Son but est triple : ~ détecter les émissions larvaires, ~ suivre dans le temps le devenir des cohortes de larves, ~ permettre la fourniture des informations aux professionnels. Pendant la saison 2001, des pêches de larves de moules ont été réalisées au point &lt;&lt;Boyard», à la demande des mytiliculteurs. En outre, afin d'informer les ostréiculteurs, des pêches de larves d'huîtres ont été effectuées aux points « Coux », « les Faulx », « les...
Tipo: Text
Palavras-chave: Marennes Oléron; Captage; Larves; Crassostrea gigas; Huîtres; Mytilus edulis; Moules; Reproduction.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/rapport-6570.PDF

Rapport sur l'activité du laboratoire de La Tremblade - Année 1967
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport d'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade année 1967
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Reproduction; Claire ostréicole; Météorologie; Crassostrea angulata; Ostrea edulis; Mytilus edulis.
Ano: 1967
URL: http://archimer.ifremer.fr/doc/00069/18049/15591.pdf

Impact génétique de la production intensive d'huîtres en écloserie : processus de dérive et de sélection liés aux pratiques d'élevage larvaire
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Taris, Nicolas; Sauvage, Christopher; Boudry, Pierre.
Oysters, like many other marine bivalves, are characterized by high fertility and low survival rates during the precocious stages. Hatchery reproduction, realised in very different conditions than in their natural habitat (density, food, temperature, etc.), tends to optimize the production of larvae and juveniles. As a consequence, slow growing larvae are systematically culled. Previous results suggest the existence of a genetic variability linked to precocious development. Our approach consists in studying the evolutionary process (genetic drift and selection) linked with hatchery reproduction. Thanks to microsatellite markers enabling us to analyse the relatedness in "mixed" cultivated families, we studied the variability of breeding success in...
Tipo: Text
Palavras-chave: Crassostrea gigas; Huîtres; Marqueurs microsatellites; Reproduction; Sélection; Dérive génétique; Variabilité génétique; Génétique.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/acte-3481.pdf

Colloque sur l'aquaculture - 22 - 24 octobre 1973 - Brest
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laubier, Lucien; Reyss, Daniel.
Ces journées ont permis de préciser les résultats scientifiques obtenus par des années d'efforts poursuivis avec ténacité. Dès sa création en effet, le CNEXO s'est efforcé de susciter la constitution d'équipes de recherches spécialement consacrées à l'aquaculture ; il s'est attaché, en tant que coordonnateur national, à réorienter les programmes d'un certain nombre de laboratoires vers des travaux liés à l'aquaculture, en particulier des études sur la reproduction et la nutrition des animaux marins ; il s'est préoccupé de former le personnel sans lequel cette orientation nouvelle et les expérimentations "sur le terrain" auraient été vides de sens. Des bourses de spécialisation ont été attribuées à des chercheurs et à des techniciens qui ont notamment été...
Tipo: Text
Palavras-chave: Aquaculture; Reproduction; Nutrition; Mollusca; Crustacea; Pisces; Croissance organisme.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/00173/28433/26766.pdf

Variation in life-history traits of European anchovy along a latitudinal gradient: a bioenergetics modelling approach
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Huret, Martin; Tsiaras, K; Daewel, U; Skogen, Md; Gatti, Paul; Petitgas, Pierre; Somarakis, S.
Anchovy Engraulis encrasicolus distribution in European waters spans from the Mediterranean Sea to the North Sea, and is expected to expand further north with global warming. Observations from the eastern Mediterranean (North Aegean Sea), the Bay of Biscay and the North Sea reveal latitudinal differences in growth, maximum size, fecundity and timing of reproduction. We set up a mechanistic framework combining a bioenergetics model with regional physical-biogeochemical models providing temperature and zooplankton biomass to investigate the underlying mechanisms of variation in these traits. The bioenergetics model, based on the Dynamic Energy Budget theory and initially calibrated in the Bay of Biscay, was used to simulate growth and reproduction patterns....
Tipo: Text
Palavras-chave: Engraulis encrasicolus; Countergradient variation; Growth; Reproduction; Dynamic Energy Budget theory; Bay of Biscay; Aegean Sea; North Sea.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00504/61564/65489.pdf

Observations sur la viabilité des oeufs de la coquille Saint Jacques en Rade de Brest
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cochard, Jean-claude.
La production de naissain de Pecten maximus destiné au repeuplement de la rade de Brest a nécessité le déclenchement de la ponte de plusieurs centaines d'individus au cours des années 1980 à 1984. L'analyse de ces données permet de faire quelques constatations sur le cycle sexuel de la coquille Saint-Jacques dans cette zone. - Le cycle sexuel de la population est très étalé dans le temps. Des pontes d'apparence normale peuvent être obtenues chaque mois sans qu'il soit nécessaire de recourir au conditionnement. - La fécondité, estimée par le nombre moyen d'ovocytes recueillis par reproducteur, varie au cours du cycle annuel. Les pontes les plus abondantes ont lieu de février à avril (12 à 20 millions d'ovocytes par coquille en moyenne) et en octobre. En été...
Tipo: Text
Palavras-chave: Ovocytes; Pecten maximus; Coquille Saint Jacques; Reproduction; Naissain.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-6540.pdf

Rapport annuel d'activité 1980 du Laboratoire Cultures Marines et Aménagement du Littoral de La Rochelle
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dardignac, Marie-jose.
Rapport annuel d'activité du Laboratoire de Cultures Marines de La Rochelle concernant l'année 1980
Tipo: Text
Palavras-chave: Conchyliculture; Production; Reproduction; Physiologie; Croissance; Crassostrea gigas.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/00070/18111/15659.pdf

Suivi de la reproduction de l'huître creuse Crassostrea gigas dans la partie Nord du bassin charentais - Année 1997
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Fillon, Alain.
Le littoral charentais-maritime présente, dans sa partie nord entre l'estuaire de la Charente et la limite nord du département (île de Ré comprise), plusieurs sites intéressant l'ostréiculture pour le captage de juvéniles, dont le centre réputé de Fouras. Pour aider la profession, et selon son souhait, une assistance est fournie par l' IFREMER qui recherche les périodes d'émission de larves d'huîtres creuses afin d'informer les ostréiculteurs des époques les plus propices au captage. Contractualisé pour la première fois en 1996 entre la SRC RE-CENTRE OUEST et l' IFREMER, ce travail a été effectué à nouveau en 1997 par le laboratoire côtier DEL de La Rochelle, suite au renouvellement de ce contrat. Le présent rapport expose les différents aspects de ce...
Tipo: Text
Palavras-chave: Reproduction; Larves; Crassostrea gigas; Charente Maritime.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00049/16068/13529.pdf

Effect of food conditioning on gonadic activity in the oyster Pinctada margaritifera
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Moullac, Gilles; Hui, Belinda; Vonau, Vincent; Levy, Peva; Cochard, Jean-claude.
Preliminary experiments allowed defining basic requirements of Pinctada margaritifera for somatic and gonadic growth in controlled conditions. This study was continued by observation of the gametogenesis at a cellular level. In April/May 2008, 125 oysters were conditioned for 30 days in 25 tubular tanks (30 L). Water was renewed 4 times/hour. A mixed (v:v) diet of Isochrysis galbana (T-Iso) and Chaetoceros gracilis was supplied continuously. A control batch of 125 oysters was maintained in trays in the lagoon. An initial sample of 30 individuals was made. Gonadic changes were first characterized using a gonadal development index (GDI) based on the ratio of the gonad area to the total visceral mass area on a sagittal section of the body. Histological...
Tipo: Text
Palavras-chave: Pearl oyster; Reproduction; Gametogenesis; Broodstock.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00029/14010/11196.pdf

Essais de collecteurs carton pour le captage du naissain
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: La Douce, R.
Sur l'initiative de M. Le Directeur de l'Office et en collaboration avec les ostréiculteurs, notamment M. THIEBLEMONT-COLSON de Carnac, des essais de captage du naissain portant sur différents types de collecteurs en carton- et en variant les enduits pour obtenir à la fois la rigidité et la conservation du support ainsi qu'une couche propice à une bonne fixation des larves - ont été poursuivis en 1951 dans les Stations expérimentales d'Arcachon, La Tremblade et Auray. Les Résultats des essais entrepris par MM. THIEBLEMONT CONSOL et MARTEIL à Auray, M. TROCHON à La Tremblade et M. LE DANTEC à Arcachon sont résumés ici.
Tipo: Text
Palavras-chave: Conchyliculture; Collecteur; Captage naissain; Reproduction; Marennes Oléron; Auray; Arcachon.
Ano: 1952
URL: http://archimer.ifremer.fr/doc/00014/12514/9371.pdf

Sex-Specific Regulation of AMP-Activated Protein Kinase (AMPK) in the Pacific Oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Guevelou, Eric; Huvet, Arnaud; Galindo-sanchez, Clara E.; Milan, Massimo; Quillien, Virgile; Daniel, Jean-yves; Quere, Claudie; Boudry, Pierre; Corporeau, Charlotte.
The hermaphrodite Pacific oyster Crassostrea gigas displays a high energy allocation to reproduction. We studied the expression of AMP-activated protein kinase (AMPK) during gametogenesis in the gonad and characterized the mRNA sequences of the AMPK subunits: the AMPK alpha mRNA sequence was previously characterized; we identified AMPK beta, AMPK gamma, and mRNAs of putative AMPK-related targets following bioinformatics mining on existing genomic resources. We analyzed the mRNA expression of the AMPK alpha, beta, and gamma subunits in the gonads of male and female oysters through a reproductive cycle, and we quantified the mRNA expression of genes belonging to fatty acid and glucose metabolism. AMPK alpha mRNA levels were more abundant in males at the...
Tipo: Text
Palavras-chave: AMP-activated protein kinase; Crassostrea gigas; Gametogenesis; Marine bivalve; Reproduction.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00168/27911/26470.pdf

Nouvelles donnees sur la reproduction du thon rouge (Thunnus thynnus L.) et d'autres especes de thonides en Mediterranee
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Duclerc, J; Sacchi, J; Piccinetti, C; Piccinetti-manfrin, G; Dicenta, A; Barrois, J-m.
Two international research cruises on board of the research vessel 'Ichthys' the first one in Aug-Sept 1971, and the second other in June-July 1972, have shown the reproduction of Thunnus thynnus, T.alalunga, Auxis thazard and Sarda in the surroundings of the Balearic Islands. The observations were made on the planctonic stages of these spp and on the physico-chemical and biological conditions of the environment. Some data were also collected on the presence of juvenile or mature stages of these fishes and on their fishery.
Tipo: Text
Palavras-chave: Plankton; Eggs; Larvae; Physico chemical conditions; Mediterranean sea; Reproduction; Thunnidae; Bluefin tuna.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2159.pdf

Reproductive performance, biochemical composition and fatty acid profile of wild-caught and 2nd generation domesticated Farfantepenaeus duorarum (Burkenroad, 1939) broodstock
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Emerenciano, Mauricio; Cuzon, Gerard; Mascaro, Maite; Arevalo, Miguel; Norena-barroso, Elsa; Jeronimo, Gilberto; Racotta, Ilie; Gaxiola, Gabriela.
A 30-day trial was performed to evaluate the reproductive performance of wild and 2nd generation domesticated Farfantepenaeus duorarum broodstock. Changes in biochemical composition and fatty acids (FA) profile in the 1st and 4th spawn order females were used as indicators of nutritional condition. Wild population of F. duorarum presented significantly better reproductive outcomes as compared to domesticated ones. Wild spawners achieved significantly higher number of eggs per spawn, number of egg per spawn per g of spawner's body weight and number of nauplii per spawn (P&lt;0.05). Latency period was significantly shorter (P&lt;0.05) for wild than for domesticated females (11 vs 17 days). Wild spawners also presented less mortality (6 vs 12%), higher number...
Tipo: Text
Palavras-chave: Fatty acids; F. duorarum; Lipids; Pink shrimp; Nutrition; Reproduction.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00079/19042/17214.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1955
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade : Année 1955
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Reproduction; Claires ostréicoles; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1955
URL: http://archimer.ifremer.fr/doc/00069/18067/15611.pdf

Métabolisme énergétique du spermatozoïde d'huître creuse (Crassostrea gigas)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boulais, Myrina.
The present study aims at describing the energy metabolism of Pacific oyster, Crassostrea gigas, spermatozoon. The main objectives are: (1) describing the kinetic of cellular and biochemical characteristics of Pacific oyster spermatozoon during its movement phase, (2) identifying the metabolic pathways to produce energy and their substrates, (3) determining the involvement of energy metabolism in fertilization success. The results showed the long duration (ranging 24 to 72h) of the movement of Pacific oyster spermatozoon and the maintenance of a high intracellular ATP content until the end of the movement phase. The role of oxidative phosphorylation (OXPHOS) in ATP production was highlighted. Alternative ATP producing pathways might contribute to sustain...
Tipo: Text
Palavras-chave: Fécondation; Sperme; Analyse du mouvement; Métabolisme énergétique; RMN; Cytométrie en flux; Crassostrea gigas; Reproduction; Fertilization; Sperm; Movement analysis; Energetic metabolism; NMR; Flow cytometry.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00498/60940/64334.pdf

Effect of reproduction on escape responses, metabolic rates and muscle mitochondrial properties in the scallop Placopecten magellanicus
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Kraffe, E; Tremblay, R; Belvin, S; Le Coz, Jean-rene; Marty, Y; Guderley, H.
In scallops, gametogenesis and spawning can diminish the metabolic capacities of the adductor muscle and reduce escape response performance. To evaluate potential mechanisms underlying this compromise between reproductive investment and escape response, we examined the impact of reproductive stage (pre-spawned, spawned and reproductive quiescent) of the giant scallop, Placopecten magellanicus, on behavioural (i.e., escape responses), physiological (i.e., standard metabolic rates and metabolic rates after complete fatigue) and mitochondrial capacities (i.e., oxidative rates) and composition. Escape responses changed markedly with reproductive investment, with spawned scallops making fewer claps and having shorter responses than pre-spawned or...
Tipo: Text
Palavras-chave: Placopecten magellanicus; Sterols; Fatty acids; Plasmalogens; Phospholipids; Cytochrome C oxidase; Metabolic rate; Escape response; Muscle; Scallops; Reproduction; Mitochondria.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4786.pdf

Application of a dynamic energy budget model to the Pacific oyster, Crassostrea gigas, reared under various environmental conditions
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pouvreau, Stephane; Bourles, Yves; Lefebvre, Sebastien; Gangnery, Aline; Alunno-bruscia, Marianne.
The Dynamic Energy Budget (DEB) model (Kooijman, S.A.L.M., 1986. Energy budgets can explain body size relations. J. Theor. Biol. 121, 269¿282; Kooijman, S.A.L.M., 2000. Dynamic Energy and Mass Budgets in Biological Systems. Cambridge University Press, Cambridge, 424 pp.) has been adapted to describe the dynamics of growth and reproduction of the Pacific oyster (Crassostrea gigas) reared in different areas under conditions ranging from controlled to natural. The values of the model parameters were estimated from available physiological data and from published information. The sets of data used to validate the model came from three long-term growth experiments (&gt; 5 months) performed on Pacific oysters reared under different conditions of food and...
Tipo: Text
Palavras-chave: Reproductive effort; Reproduction; Growth; Ecophysiology; Dynamic energy budget; Crassostrea gigas.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1817.pdf

La fixation en claires des larves de l'huître plate Ostrea edulis
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
La reproduction des huîtres plates dans les claires de la région de La Tremblade a été étudiée à partir de l'année 1953. Les premières observations permirent de constater dans ces plans d'eau la présence de larves en grand nombre au début de l'été ; mais la quantité des larves parvenues au stade de fixation demeurait toujours très faible. Néanmoins, sur des collecteurs immergés aux moments les plus favorables, de très faibles fixations furent obtenues. Il était donc démontré qu'il était possible de récolter des huîtres plates dans ces bassins.
Tipo: Text
Palavras-chave: Reproduction; Huître plate; Ostrea edulis; Claires ostréicole; Marennes Oléron.
Ano: 1956
URL: http://archimer.ifremer.fr/doc/00005/11578/8203.pdf

Functional Characterization of a short neuropeptide F-related receptor in a Lophotrochozoa, the mollusk Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bigot, Laetitia; Beets, Isabel; Dubos, Marie-pierre; Boudry, Pierre; Schoofs, Liliane; Favrel, Pascal.
Members of the short neuropeptide F (sNPF) family of peptides and their cognate receptors play key roles in a variety of physiological processes in arthropods. In silico screening of GigasDatabase, a specific expressed sequence tag database from the Pacific oyster Crassostrea gigas, resulted in the identification of a receptor (CgsNPFR-like) phylogenetically closely related to sNPF receptors (sNPFRs) of insects. A reverse endocrinology approach was undertaken to identify the peptide ligand(s) of this orphan receptor. Though structurally distinct from insect sNPFs, three RFamide peptides derived from the same precursor, i.e. GSLFRFamide, SSLFRFamide and GALFRFamide, specifically activate the receptor in a dose-dependent manner, with respective EC50 values...
Tipo: Text
Palavras-chave: Oyster; Crassostrea gigas; SNPF; Energy metabolism; Reproduction; Starvation.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00207/31777/30188.pdf

Genetic and reproduction strategy in Crassostrea gigas mortality
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Moal, Jeanne; Bedier, Edouard; Fleury, Pierre-gildas; Langlade, Aime; Le Coguic, Yvette; Degremont, Lionel; Boudry, Pierre; Le Coz, Jean-rene; Pouvreau, Stephane; Enriquez-diaz, M.; Lambert, Christophe; Quere, Christele; Soudant, Philippe; Samain, Jean-francois.
Bi-parental families were produced in hatchery and tested in the field in 2001. Two sets of 5 families were constituted, selected on their high (R) and low (S) survival. These two sets were reared in Brittany from March to November 2002. Samplings were performed twice a month to obtain data on biometry, survival, reproductive cycle, biochemical composition, adenylate energy charge, hemolymph parameters (ions and defense system) and muscle strength. "R" and "S" oysters exhibited different reproductive effort and spawning strategy. "R" oysters allocated less energy in gonad than "S" ones and presented a complete spawning at the end of August contrary to the "S" which spawns partially. Mortality started in July when the seawater temperature reached 19 degree...
Tipo: Text
Palavras-chave: Summer; Reproduction; Oyster culture; Mortality; Genetic diversity; Commercial species; Breeding.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-3345.pdf

Données sur la reproduction et la taille de première maturité du homard Homarus gammarus d'Iroise et du golfe de Gascogne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Latrouite, Daniel; Leglise, Michel; Raguenes, Gérard.
This paper deals with the lobsters caught by French fishermen off the "Conquet" (Iroise sea) and off "Ile d'Yeu" (Biscay Bay) on the French atlantic coast. The size at first maturity, defined as the size at which 50 % of female are able to reproduce, is deduced from the analysis of size frequency in landings. It is also shown that more than 50 % of the mature female are spawing each year ; the periods of hatching in the natural environment are also established.
Tipo: Text
Palavras-chave: Size at maturity; Western Channel; Reproduction; Homarus gammarus; Lobster; Atlantic; Biscay Bay; Iroise sea; Golfe de Gascogne; Iroise; Manche; Taille de maturité; Reproduction; Homarus gammarus; Homard.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/acte-1414.pdf

Mise au point technique de l'élevage de l'ombrine Sciaenops ocellata. Document 4 : Elevage larvaire en intensif, les expérimentations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick; Goyard, Emmanuel; Thouard, Emmanuel.
Le travail présenté reprend les principales expérimentations menées en structures de petits volumes (40, 120 et 150 l). Elles ont permis de lever un certain nombre de points de blocages au cours de ces 3 années d'études. Les résultats de ces expérimentations menées en réplicats de 3 à 7 bassins par condition étaient immédiatement pris en compte dans les élevages "pilotes" menés parallèlement. Vingt-deux expérimentations ont été réalisées au cours de différentes phase de l'élevage, sur des thèmes aussi divers que la lumière, l'abondance et la qualité des proies, le sevrage précoce, le sevrage, les normes zootechniques eu prégrossissement. Ces résultats sont présentés dans ce 4ème document de la mise au point de l'élevage de l'ombrine subtropicale.
Tipo: Text
Palavras-chave: Aquaculture; Elevage; Ombrine; Sciaenops ocellata; Reproduction; Zootechnie; Prégrossissement.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00133/24378/22390.pdf

Contribution à l'étude de la biologie des populations de Tacauds Trisopterus luscus (L.1758) en Manche orientale et dans le sud de la Mer du Nord
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Desmarchelier, Manuela.
L'étude est axée principalement sur la reproduction, la croissance du Tacaud (Trisopterus luscus L.), ainsi que sur la répartition des individus à l'intérieur de la zone étudiée. Le Tacaud, poisson, gadidé, est une espèce côtière péchée artisanalement comme espèce accessoire. Les jeunes vivent à la côte; les adultes sont sur des fonds chalutables, à l'exception des plus âgés qui migrent sur des fonds rocheux. Notre étude a été réalisée à partir de chalutages expérimentaux et de l'analyse statistique des captures débarquées au port de Boulogne/mer. Le rythme de la reproduction a été déterminé, ainsi que l'âge et la taille à la première maturité sexuelle. On observe un décalage géoqraphique de la reproduction : Les populations vivant au nord mûrissent plus...
Tipo: Text
Palavras-chave: Dynamique de population; Tacaud; Mer du Nord; Manche orientale  Sud; Biométrie; Reproduction; Croissance; Trisopterus luscus.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/these-6943.pdf

Population genetics of the European flat oyster (Ostrea edulis) : from larvae to populations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boudry, Pierre; Launey, Sophie; Diaz-almela, E.; Naciri-graven, Yamama; Ledu, Christophe; Mira, Sara; Taris, Nicolas; Bonhomme, Francois; Lapegue, Sylvie.
Nowadays, PCR-based DNA markers allow the study of diversity and differentiation of marine organisms at different stages of their life cycle. Our study of European flat oyster (Ostrea edulis) populations has aimed to describe their spatial and temporal dynamics. First, we analyzed adults sampled over the natural range of the species.  An Atlantic/Mediterranean differentiation pattern was observed. Results were congruent between allozymes, microsatellites and mitochondrial DNA and  support an isolation by distance model. High variability was observed in the breadth of diversity between populations using a mitochondrial marker, this highlights the small effective population sizes in some locations. A 10-fold quantitative difference was observed in Fst...
Tipo: Text
Palavras-chave: Larvae; Reproduction; Genetic; Ostrea edulis; European flat oyster; Population genetics.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/acte-3493.pdf

Etude pluridiciplinaire de la DYNAmique des MOrtalités estivales dans le bassin de Marennes- Oléron : Dynamique des mortalités en relation avec la reproduction in situ et la température - Suivi de paramètres hémocytaires - Synergie écologie côtière et activité hémocytaire
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Renault, Tristan; Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole; Guilpain, Patrice; Geairon, Philippe; Razet, Daniel; Seugnet, Jean-luc; Gagnaire, Beatrice; Kerdudou, Nolwenn.
Massive abnormal mortalities of flat oysters Crassostrea during the summer period are nothing new, and such episodes have been described in scientific literature for about forty years. Numerous studies demonstrate that there is not one single identified cause to this phenomenon and that it is, on the contrary, a combination of different parameters. This program proposes a multidisciplinary approach to the problem of summer mortality of C. gigas in which the working hypothesis is that these mortalities result from the interaction of three parameters: environment, host and pathogens. As a consequence, this program gathers all the necessary competences for the study of these interactions: competences in genetics, physiology, immunology, ecotoxicology,...
Tipo: Text
Palavras-chave: Marennes Oléron; Activité hémoctyaire; Synergie écologie côtière; Pathologie; Paramètres hémocytaires; Physiologie; Paramètres; Reproduction; Mortalités; Crassostrea gigas; Huîtres.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/acte-3404.pdf

Suivi de la reproduction des mollusques d'élevage 1987
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heurtebise, Serge; Ratiskol, Jacqueline.
Comme précédemment en 1985 et 1986, le suivi de la reproduction des huîtres et des moules a été assuré par le CSRU de La Tremblade pour les secteurs clefs de la production du naissain que sont l'embouchure de la Charente, la Seudre et le bassin de Marennes-Oléron.
Tipo: Text
Palavras-chave: Reproduction; Captage; Naissain; Crassostrea gigas; Mytilus edulis; Marennes Oléron.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00072/18287/15859.pdf

Essais de captage d'huître plate avec de nouveaux types de collecteurs
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Martin, Anne-genevieve; Grizel, Henri; Langlade, Aime.
Malgré l'augmentation du coût de la main d'oeuvre au cours des dernières années, il a été constaté une diminution du prix du naissain capté d'une manière traditionnelle à l'aide de tuiles chaulées. Le besoin de rechercher des collecteurs aussi performants que la tuile mais surtout plus facilement maniables et d'un coût moins élevé s'est fait de plus en plus ressentir dans la profession ostréicole. Les deux nouveaux types de collecteurs étudiés semblent, sous réserve de modifications, réclamer moins de manipulations que la tuile. Ceci pourrait se traduite par une diminution du prix de production du naissain
Tipo: Text
Palavras-chave: Collecteur; Ostrea edulis; Huître plate; Naissain; Captage; Reproduction.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/acte-5016.PDF

La dorade grise Spondyliosoma cantharus reproduction et éléments de dynamique
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick.
L'objectif de la dynamique des populations est de prévoir l'évolution d'un stock que l'homme pourrait alors gérer. Certains modèles mathématiques "globaux" peuvent être construits à partir des données concernant l'effort de pêche et la production. D'autres tel le modèle de rendement équilibré par recrue demandent de connaître plusieurs paramètres biologiques de l'espèce, mais permettent ensuite de gérer le stock en influant sur le maillage à utiliser et ainsi sur la taille d'entrée de l'espèce dans la pêcherie. Ces deux types de modèles nécessitent la connaissance des statistiques de production sur plusieurs années, ainsi que l'effort de pêche associé. La première orientation de ce travail consistait à étudier la reproduction de la dorade grise avec...
Tipo: Text
Palavras-chave: Reproduction; Sexualité; Croissance; Mortalité; Elements de dynamique; Dorade grise; Spondyliosoma cantharus.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/00131/24193/22256.pdf

Reproduction de la moule Mytilus edulis et de l'huître Crassostrea gigas dans le bassin de Marennes-Oléron - Saison 2003
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Geay, Amelie; Arnaud, Christophe; Masson, Daniel.
The monitoring of the reproduction of Crassostrea gigas, and more occasionally that of the mussel Mytilus edulis, is carried out in Charente Maritime, each year, from June through to September. This report presents the main results obtained in 2003 and compares the years 2002 and 2003. It also recalls the techniques used and provides, in appendix, some bibliographic information on larval development.
Tipo: Text
Palavras-chave: Marennes Oléron; Larves; Captage; Mytilus edulis; Moules; Crassostrea gigas; Huîtres; Reproduction.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-6575.pdf

Interaction de la bactérie Vibrio harveyi avec son hôte, l'hormeau Haliotis tuberculata : approches physiologiques, cellulaires et moléculaires
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Travers, Marie-agnes.
Abalone aquaculture only recently developed in western Europe, but already it has to face numerous pathologies. Since 1998, the natural and farm stocks of Haliotis tuberculata suffer regularly high mortalities, mainly due to the pathogenic bacterium, Vibrio harveyi. The vibriosis of the European abalone, in particular its macroscopic signs, and the conditions necessary for its development have been studied in detail by field and laboratory experiments. We have been able to show the importance of the interplay between water temperature (&gt;17°C), animal physiology (reproduction period) and a pathogenic strain (harbouring the plasmid pVCR1) for the development of this abalone disease. A limited localisation study of the abalone target tissues (gills, muscle...
Tipo: Text
Palavras-chave: Ormeau; Haliotis tuberculata; Bactéries; Vibrio harveyi; Vibriose; Température; Immunité; Reproduction; Hémocytes; MAP Kinases; Plasmide; Virulence; GFP; Abalone; Haliotis tuberculata; Bacteria; Vibrio harveyi; Vibriosis; Temperature; Immunity; Reproduction; Haemocytes; MAP Kinases; Plasmid; Virulence; GFP.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00176/28729/27196.pdf

On the occurrence of ichthyoplankton in the Saronikos Gulf, Aegean Sea, 1. Anchovy and sardines in 1969-1970-1971.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Yannopoulos, A; Yannopoulosa, C; Soteriades-vlahos, C.
The spawning and nursery grounds of 3 spp of commercial importance, Engraulis encrasicholus, Sardinella aurita and S. pilchardus were studied in the Saronikos Gulf during 1969, 1970 and 1971. The waters of the gulf are very rich due to turbulence caused by currents penetrating the gulf from the Aegean Sea. This turbulence causes bottom upwelling especially in the northern region which is shallower. At the height of their reproduction these fish represent 90-95 per cent of the entire ichthyoplankton, especially in the northern region. E. encrasicholus appears to be the most abundant sp with a maximum of 1099/m super(2) of surface waters (where the density of eggs = 536 and of larvae = 563). 232/m super(2) of surface water represents the maximum for S....
Tipo: Text
Palavras-chave: Aegean sea; Saronikos gulf; Hydrography; Eutrophication; Reproduction; Sardines species; Anchovy; Ecology; Ichthyoplankton.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2160.pdf

Observations sur le frai de Mytilus edulis Var. galloprovincialis (Lmk). Dates précises de frai. Facteurs provoquant l'émission de produits génitaux
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bouxin, H.
Durant sept années, de 1933 à la guerre, j'ai observé dans la région de Concarneau (Finistère) le frai de diverses espèces de Lamellibranches marins, notamment de la moule commune, Mytilus edulis var. galloprovincialis (Lmk). Les travaux sur le frai de la moule sont extrêmement nombreux. Les auteurs qui s'en sont occupés n'ont pas eu, en général, la possibilité d'observer les émissions elle-mêmes. Ils ont dû se contenter d'en induire l'époque soit d'après l'état des glandes génitales, soit en observant la présence de larves dans le plankton, soit, enfin, d'après la possibilité de fécondations artificielles. Or, si utiles que soient des observations de ce genre, elles ne permettent d'atteindre qu'à une probabilité de circonscrire qu'une époque relativement...
Tipo: Text
Palavras-chave: Reproduction; Moules; Mytilus edulis; Mytilus galloprovincialis; Larves.
Ano: 1954
URL: http://archimer.ifremer.fr/doc/00004/11489/8045.pdf

Contribution à l'étude de la crevette rose Palaemon serratus (Pennant) : Exploitation, Biologie, Elevage, Epidémiologie
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Campillo, Albert.
This these is the result of several years of investigations conducted on the common prawn Palaemon serratus in the Roscoff (northern Brittany) and Yeu (bay of Biscay) sectors of the French Atlantic coast.    Following a description of the fishery and fishing strategies, it deals with the species biological aspects, focusing on growth, lifespan, sex-ratio and breeding. Hypotheses on the reasons for apparent variations in interannual abundance are drawn up and compared with field observations.   The second part is devoted to production experiments in a controlled environment (hatchery), explaining how larvae are obtained and their development and survival with respect to food, density and physical parameters like salinity and temperature. The link between...
Tipo: Text
Palavras-chave: Shrimp farm; Larval development; Sex ratio; Breeding; Growth; Fishery; Palaemon serratus; Common prawn; Elevage; Développement larvaire; Sex ratio; Reproduction; Croissance; Pêche; Palaemon serratus; Crevette rose.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/these-1196.pdf

Floc contribution on spawning performance of blue shrimp Litopenaeus stylirostris
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Emerenciano, Mauricio; Cuzon, Gerard; Goguenheim, Jean; Gaxiola, Gabriela.
The floc system has been successfully applied for shrimp grow-out, but little is known about floc contribution on reproductive performance. In a 30-day trial, spawning performance of broodstock was evaluated in floc and earthen ponds. Floc spawners achieved better results (P &lt; 0.05) compared with pond spawners in terms of number of spawns per ablated female (2.9 vs. 1.3), spawns per spawning female (3.6 vs. 2.4) and number of consecutive maturation (average of 3.6 times compared with 2.5 times in ponds females). Latency period was lower for floc spawners (7.4 days) than pond spawners (10.7 days) (P &lt; 0.05). The percentage of females that spawned at least once were higher in floc (77.1%) when compared with pond spawners (53.8%) (P &lt; 0.05). Number...
Tipo: Text
Palavras-chave: Floc; Litopenaeus stylirostris; Reproduction; Broodstock.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00115/22638/21495.pdf

Eléments concernant l'huître plate, Ostrea edulis
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Martin, Anne-genevieve.
La production française d'huîtres plates (Ostrea edulis) est assurée en majeure partie par les centres bretons. Le captage de cette espèce se fait essentiellement en Bretagne dans la baie de Quiberon et les rivières attenantes. Le laboratoire conchylicole ISTPM de La Trinité S/Mer consacre donc une partie de ses programmes, d'une part à l'étude de la reproduction de l'huître plate afin de déterminer la période favorable à la pose des collecteurs, d'autre part à l'évaluation du recrutement sur ces collecteurs.
Tipo: Text
Palavras-chave: Huître plate; Ostrea edulis; Reproduction; Captage; Recrutement.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/00016/12704/9626.pdf

Reproduction de l'huître creuse dans le bassin d'Arcachon, Année 2006
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Auby, Isabelle; Maurer, Daniele; Cassam Chenai, Yoann; Tournaire, Marie-pierre; Neaud-masson, Nadine; Rumebe, Myriam; Cantin, Christian; Debort, Henriette; Germain, Jean-marie; Navarro, Romuald.
Introduction: During each summer season, the IFREMER laboratory of Arcachon monitors, within the framework of the agreement with the Arcachon- Aquitaine Shellfish Farming Regional Section (SRC), the reproduction of cup oysters in the Arcachon basin.  This monitoring has as its goal to furnish oyster farmers with the information needed to implement spat catches: - dates and size of egg clutches, - larvae development rate, - presence in the environment of more evolved stages (close to fixation).  Reproduction was monitored between mid-June and mid-September, plankton was fished four times per week at the various sites representative of the basin. Oyster larvae at various stages are enumerated there.  At the end of the reproductive season (September to...
Tipo: Text
Palavras-chave: Crassostrea gigas; Larvae collection; Spat oyster; Larvae development; Reproduction; Arcachon Bassin; Ostreidae; Crassostrea Gigas; Bivalvia; Mollusca; Aquaculture; Naissain; Captage Larve; Developpement Larvaire; Maturation; Reproduction.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/rapport-2216.pdf

Compte rendu sur la reproduction des huîtres et des moules dans le bassin de Marennes Oléron pour l'année 1987
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heurtebise, Serge; Ratiskol, Jacqueline.
Comme précédemment en 1985 et 1986, le suivi de la reproduction des huîtres et des moules a été assuré par le CSRU de La Tremblade pour les secteurs clefs de la production du naissain que sont l'embouchure de la Charente, la Seudre et le bassin de Marennes-Oléron. Ce suivi a nécessité 40 sorties en mer, dont 21 à partir du Chapus ou de La Tremblade (moyens nautiques IFREMER) et 19 au départ de Port des Barques avec la location des services d'un professionnel. Les différents paramètres physico-chimiques (T°, S %, 02) ont été mesurés à l'occasion de chaque pêche de larves pour appréhender au mieux l'évolution de la reproduction et fournir des indications complémentaires sur les bulletins de numération. Cette année, 30 bulletins sont parvenus à la profession...
Tipo: Text
Palavras-chave: Reproduction; Larves; Crassostrea gigas; Mytilus edulis; Bassin de Marennes Oléron.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00049/16071/13533.pdf

Suivi de la reproduction de l'huître creuse Crassostrea gigas dans la partie nord du Bassin Charentais (Sous-Section Ostréicole Nord-Charente - Sous-Section Ostréicole Vendée-Atlantique). Année 1996
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fillon, Alain; Arnaud, Christophe; Thomas, Gerard.
Le littoral charentais-maritime présente, dans sa partie nord entre l'estuaire de la Charente et la limite nord du département (île de Ré comprise), plusieurs sites intéressant l'ostréiculture pour le captage de juvéniles, dont le centre réputé de Fouras.  Pour aider la profession, et selon son souhait, une assistance est fournie par I'IFREMER qui recherche les périodes d'émission de larves d'huîtres creuses afin d'informer les ostréiculteurs des époques les plus propices au captage.  En 1996, ce travail a fait partie des actions contractualisées entre la SRC RE-CENTRE-OUEST et I'IFREMER (action confiée au laboratoire côtier DEL de La Rochelle).  Le présent rapport expose les différents aspects de ce travail et notamment rassemble et synthétise les...
Tipo: Text
Palavras-chave: Reproduction; Pêche larves; Huîtres creuses; Crassostrea gigas; Charente.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00139/25007/23111.pdf

Suivi de la reproduction des huîtres plates en Baie de Quiberon. Eté 1987
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Allenou, Jean-pierre.
Afin d'apprécier le moment le plus propice pour la pose des collecteurs, le laboratoire CSRU assure un suivi de la reproduction des huîtres plates en Baie de Quiberon . Les paramètres étudiés sont la température de l'eau, l'évolution des géniteurs, le nombre et la qualité des larves dans l'eau, la fixation sur les collecteurs témoins . Les tempér atures favorables enregistrées en début de saison laissent espérer un captage correct pour cet ét é 1987.  Le rôle de la température de l'eau est encore apparu prépondérant
Tipo: Text
Palavras-chave: Reproduction; Huître plate; Baie de Quiberon.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00426/53791/54699.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1958
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1958
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1958
URL: http://archimer.ifremer.fr/doc/00069/18071/15615.pdf

Gamete quality and management for in vitro fertilisation in meagre (Argyrosomus regius)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ramos-júdez, Sandra; González, Wendy; Dutto, Gilbert; Mylonas, Constantinos C.; Fauvel, Christian; Duncan, Neil.
The aquaculture of meagre (Argyrosomus regius) requires methods for the control of reproduction that enable the production of families from specific individuals for selective breeding programs. We experimentally determined the parameters required for an in vitro fertilisation protocol. A total of 14 females and 5 males (mean ± S.D. weights of 20.45 ± 6.22 and 15.94 ± 2.75 kg, respectively) were used. Selected females had vitellogenic oocytes &gt;550 μm in diameter and males had fluid sperm upon application of abdominal pressure. Both sexes were treated with an injection of 15 μg kg−1 of gonadotropin-releasing hormone agonist (GnRHa) to induce oocyte maturation/ovulation and enhance sperm production. To determine the timing of ovulation and window of high...
Tipo: Text
Palavras-chave: Argyrosomus regius; Meagre; Reproduction; Artificial fertilisation; Gamete management; GnRHa.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00495/60682/64178.pdf

Avancées récentes sur la reproduction des huîtres
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gerard, Andre.
Historically, the research on mollusc reproduction conducted by the Ifremer aimed at improving mass production in order to support new activities (Japanese clam for example) or to compensate for insufficient natural reproductions (abalone, king scallop). Nowadays, priority has been given to the preservation of natural resources and the optimisation of shellfish culture in order to support activities that are strongly represented by a profession, especially oyster culture. The studies that have been carried out in the field of oyster genetics for about ten years highlighted the limits of our knowledge on reproduction control as well as the high sensitivity of mollusc farms to the multiple assaults of their outside environment. As far as professional...
Tipo: Text
Palavras-chave: Crassostrea gigas; Reproducteur; Sélection génétique; Huître; Reproduction.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/publication-6535.pdf

Suivi de la reproduction de l'huître creuse Crassostrea gigas et de la moule Mytilus edulis dans le bassin de Marennes Oléron
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Faury, Nicole; Bouquet, Jean-paul; Guesdon, Stephane; Kantin, Roger.
The monitoring of the reproduction of Crassostrea gigas, and more occasionally that of the mussel Mytilus edulis, is carried out in the Marennes-Oléron Basin, each year, from June through to September. This report presents the main results obtained in 1997, 1998, 1999, 2000 and compares them. It also recalls the techniques used and provides, in appendix, some bibliographic information on larval development.
Tipo: Text
Palavras-chave: Marennes Oléron; Captage; Larves; Reproduction; Mytilus edulis; Moules; Crassostrea gigas; Huîtres.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/rapport-6569.PDF

Rapport sur l'activité du laboratoire de La Tremblade - Année 1966
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade année 1966
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1966
URL: http://archimer.ifremer.fr/doc/00069/18048/15590.pdf

Suivi de la reproduction de l'huître creuse Crassostrea gigas. Secteur de Fouras - 1998
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ifremer, Laboratoire Côtier DEL - La Rochelle - Direction de l'Environnement et de l'Aménagement Littoral.
Dans le cadre des actions de l'IFREMER au profit de la Section Régionale Conchylicole Ré Centre-Ouest pour l'année 1998, le Laboratoie côtier DEL de La Rochelle a effectué le suivi de la reproduction de l'huître creuse "Crassostrea gigas" à Fouras. Ce rapport présente les résultats obtenus.
Tipo: Text
Palavras-chave: Ostréiculture; Reproduction; Huîtres creuses; Crassostrea gigas; Fouras; Département Charente-Maritime.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00143/25383/23521.pdf

Résultats des recherches pratiques depuis 1950 en ostréiculture
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ladouce, Rémy.
Dans cette note, nous vous proposons de rendre compte, aussi brièvement que possible, des résultats pratiques des recherches de l'Office des Pêches concernant notamment la récolte du naissain et l'engraissement des huîtres.
Tipo: Text
Palavras-chave: Reproduction; Naissain; Récolte; Larves; Huître; Utilisation engrais; Ostréiculture.
Ano: 1952
URL: http://archimer.ifremer.fr/doc/00003/11460/8018.pdf

Genetically based resistance to summer mortality in the Pacific oyster (Crassostrea gigas) and its relationship with physiological, immunological characteristics and infection processes
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Samain, Jean-francois; Degremont, Lionel; Soletchnik, Patrick; Haure, Joel; Bedier, Edouard; Ropert, Michel; Moal, Jeanne; Huvet, Arnaud; Bacca, Helene; Van Wormhoudt, A; Delaporte, Maryse; Costil, K; Pouvreau, Stephane; Lambert, Christian; Boulo, Viviane; Soudant, Philippe; Nicolas, Jean-louis; Leroux, Frederique; Renault, Tristan; Gagnaire, Beatrice; Geret, Florence; Boutet, Isabelle; Burgeot, Thierry; Boudry, Pierre.
Summer mortality of Pacific oysters is known in several countries. However no specific pathogen has been systematically associated with this phenomenon. A complex combination of environmental and biological parameters has been suggested as the cause and is now starting to be identified. A high genetic basis was found for survival in oysters when a first generation (G1) was tested in three sites during summer. This paper presents a synthesis on physiological characteristics of two selected groups ('R' and 'S', from families selected for resistance and susceptibility to summer mortality respectively), of the second and third generations. R and S showed improvement or reduction of survival compared with the control in both field and laboratory trials...
Tipo: Text
Palavras-chave: ROS; Temperature; Stress; Hemocytes; Reproduction; Genetic selection; Resistant oyster; Crassostrea gigas; Pacific Oyster; Summer mortality.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2809.pdf

Répartition des oeufs et larves de sardine dans le Golfe de Gascogne et sur le plateau celtique (mai 1966 ; février et mai 1967)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: L'Herrou, Roger.
La ponte de la sardine en 1964 dans le golfe de Gascogne et sur le plateau celtique a été récemment étudiée à l'Institut des Pêches par S. Arbault et N. Boutin dans le cadre d'une travail plus général sur la répartition saisonnière des oeufs et larves de téléostéens, travail que résume une communication présentée au Comité du plancton. Les résultats exposés ici et limités à la seule sardine, font suite à l'étude des ces chercheurs et proviennent du dépouillement des pêches planctoniques de 3 campagnes d'hydrologie des pêches effectuées par la Thalassa et la Pélagia dans la même région du 26 avril au 9 mai 1966, du 13 février au 22 mars 1967 et du 16 mai au 7 juin 1967.
Tipo: Text
Palavras-chave: Sardine; Reproduction; Ponte; Hydrologie; Golfe de Gascogne; Plateau celtique.
Ano: 1967
URL: http://archimer.ifremer.fr/doc/00142/25325/23402.pdf

Suivi de la reproduction des mollusques d'élevage 1990
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ratiskol, Jacqueline; Faury, Nicole.
La reproduction des coquillages a été soumise à des conditions climatiques exceptionnelles amplifiées par un hiver doux et sec. Concernant la reproduction des moules la formation des gonades s'est normalement effectuée vers le mois de février. Dans l'ensemble, le captage a été correct et la croissance des jeunes moules rapide malgré la sécheresse. La gamétogénèse des huîtres creuses a débuté très tôt. La reproduction s'est effectuée dans des conditions climatiques et de milieu peu habituels.
Tipo: Text
Palavras-chave: Reproduction; Larves; Crassostrea gigas; Mytilus edulis; Bassin de Marennes Oléron.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00049/16069/13530.pdf

Effect of water temperature on individual reproductive activity of pollack (Pollachius pollachius)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Suquet, Marc; Normant, Yvon; Gaignon, Jean-louis; Quemener, Loic; Fauvel, Christian.
The effects of water temperature on pollack (Pollachius pollachius) spawning features were individually assessed. During the spawning period, nine fish sets, each composed of one female and two males (mean body weight: 2.5+/-1.0 kg), were placed in small-volume tanks (2 m(3)). Fish sets were held at 8, 10, or 12 degreesC (n=3 for each temperature).   Three females released eggs at 8 and 10 degreesC, while only two spawned at 12 degreesC. One hundred thirty-one individual spawns were collected from the eight spawning fish sets. The number of spawns collected per female was significantly lower at 12 degreesC (3.0+/-3.6), compared to 10 degreesC (17.3+/-10.1) and 8 degreesC (23.3+/-2.5). Egg number (eggs kg(-1) BW) was significantly lowered at 12 degreesC...
Tipo: Text
Palavras-chave: Egg quality; Temperature; Reproduction; Pollachius pollachius; Pollack; Gadoids.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-470.pdf

Feeding the pearl oyster Pinctada margaritifera during reproductive conditioning
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Moullac, Gilles; Soyez, Claude; Sham-koua, Manaarii; Levy, Peva; Moriceau, Jacques; Vonau, Vincent; Maihota, Mayalen; Cochard, Jean-claude.
This study aimed to model the food intake of P. margaritifera in order to examine the relationship between food level and reproductive activity. The effect of microalgae concentration on ingestion rate and assimilation efficiency was studied over a broad concentration range, using a mixture of Isochrysis galbana and Chaetoceros gracilis. Reproductive effort was assessed using three microalgae concentrations of 0.5, 7 and 18 cell μL-1. Reproductive status was assessed by gonad development index (GDI) – the ratio of the gonad surface to the visceral mass surface – and histological analysis of the gonad based on the presence (continuous or discontinuous) or the absence of gonial cells (GC). Ingestion is a saturating function of seston concentration for...
Tipo: Text
Palavras-chave: Pinctada margaritifera; Food level; Ingestion rate; Reproduction; Gametogenesis.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00050/16085/13562.pdf

The state of the art of IFREMER in tropical aquaculture
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Calvas, Jacques.
IFREMER, a French governmental agency, is engaged in research on tropical aquaculture since 1971, with the aims to develop new activities in French overseas territories and to export French technology to foreign countries. With 80 searchers and technicians the "Centre Oceanologique du Pacifique" is the main IFREMER's centre involved in tropical aquaculture. The research has been focused on the complete control of the whole cycle: constitution of broodstock, maturation and reproduction, larval rearing, and grow-out.
Tipo: Text
Palavras-chave: Lates calcarifer; Pisces; Penaeus stylirostris; Penaeus indicus; Penaeus monodon; Macrobrachium rosenbergii; Crustacea; Perna viridis; Crassostrea rhizophorae; Crassostrea gigas; Saccostrea echinata; Brood stocks; Reproduction; Larval development; Rearing; Research institutions.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1500.pdf

Rapport sur l'activité du service du contrôle sanitaire des coquillages pendant l'année 1951 - La Tremblade
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport d'action du service du contrôle sanitaire des coquillages pendant l'année 1951 du Laboratoire ISTPM de La Tremblade
Tipo: Text
Palavras-chave: Contrôle sanitaire; Rapport d'activité; Ostréiculture; Reproduction; Parasite; Crassostrea angulata; Mytilus edulis; Ostrea edulis; Marennes Oléron.
Ano: 1951
URL: http://archimer.ifremer.fr/doc/00069/18062/15606.pdf

The Manila clam population in Arcachon Bay (SW France): Can it be kept sustainable?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dang, Cecile; De Montaudouin, Xavier; Gam, Meriame; Paroissin, Christian; Bru, Noelle; Caill-milly, Nathalie.
The venerid clam Ruditapes philippinarum is the most prominent suspension-feeding bivalve inhabiting muddy intertidal seagrass beds in Arcachon Bay (SW France). It is exploited by fishermen, and Arcachon Bay ranks number one in France in terms of production and total biomass of this species. Previous studies revealed a decrease in the standing stock of R. philippinarum since 2003 and unbalanced length-frequency distributions with a lack of juveniles and of adults &gt;40 mm. Consequently, the population dynamics of this bivalve were studied at four intertidal sites and one oceanic site in Arcachon Bay. As clam size structure did not allow classical dynamics computations. field monitoring was coupled with field experiments (tagging-recapture) over two years....
Tipo: Text
Palavras-chave: Manila Clam; Ruditapes philippinarum; Growth; Mortality; Reproduction; Population Dynamic; Production; Productivity.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11292/7990.pdf

Action d'un sel organo-métallique, l'acétate de tributyle-étain sur les oeufs et les larves D de Crassostrea gigas (Thunberg)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard; Robert, Rene.
L'action de l'acétate de tributyle-étain, à des concentrations variant de 5 à 100 micro- grammes/l a été étudiée sur les oeufs de Crassostrea gigas en cours de fécondation. Parallèlement les mêmes concentrations ont été testées sur les larves D âgées de 24 heures.
Tipo: Text
Palavras-chave: Huître; Crassostrea gigas; Expérimentation; Larves; Reproduction; Sel organo-métallique; Acétate de tributyle étain.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/00009/11983/8687.pdf

Rapport d'activité année 1979 du Laboratoire de Biologie Conchylicole de La Tremblade
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heral, Maurice.
Rapport d'activité du Laboratoire de Biologie Conchylicole de La Tremblade concernant l'année 1979
Tipo: Text
Palavras-chave: Conchyliculture; Physiologie; Crassostrea gigas; Mytilus edulis; Reproduction; Estimation stock; Croissance; Ruditapes decussatus; Ruditapes philippinarum; Marennes Oléron.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00070/18088/15636.pdf

Observations complémentaires sur la nature du cycle sexuel de Gryphaea angulata Lmk dans le bassin d'Arcachon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Dantec, Jean.
Les premiers résultats de nos recherches ont été exposés dans une communication au Conseil International pour l'Exploration de la Mer en 1957. Ils pouvaient être ainsi résumés : Le cycle sexuel semble être moins long pour les huîtres cultivées sur parcs que pour celles fixées naturellement sur pieux. Un même animal est vraisemblablement capable de pondre au moins deux fois pendant les mois d'été. Le volume de gonade diminue progressivement, ce qui rend malaisée la distinction des stades macroscopiques permettant une étude statistique. La taille des ovocytes diminue également pendant la saison; un nouveau matériel apparaît puis évolué (phénomènes de reconstitution permettant de prévoir des émissions tardives).
Tipo: Text
Palavras-chave: Huître; Grypheae angulata; Reproduction; Bassin Arcachon; Gironde.
Ano: 1959
URL: http://archimer.ifremer.fr/doc/00004/11499/8069.pdf

Nutrition, digestion et développement des larves de crevettes et poissons marins
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cahu, Chantal.
This report is presented by Chantal Cahu for obtaining accreditation to supervise research. Since 1981, her research activity has addressed the study of reproducers' nutrition and the young stages of development of marine organisms belonging to two different branch lines, crustaceans and fish. This work, performed in a base-lined research body, IFREMER, is placed within a more general programme of aquaculture development. Indeed, whatever species are at issue, the development of aquaculture in France, as at the global level, is based on the production of juveniles in hatcheries. My work has therefore more precisely the goal of acquiring knowledge about the nutritional needs, mechanisms of digestion and the development of these animals in order to improve...
Tipo: Text
Palavras-chave: Skeleton development; Vitamins; Nutriment; Fish larvae; Egg quality; Reproduction; Nutrition; Shrimp larvae; Peneids.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/rapport-2086.pdf

Reproduction des huîtres en 1973 dans le Quartier de La Rochelle
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dardignac, Marie-jose.
Rapport concernant le reproduction des huîtres, le laboratoire conchylicole de La Rochelle a suivi l'évolution sexuelle d'huîtres d'espèces et d'origines différentes.
Tipo: Text
Palavras-chave: Reproduction; Crassostrea gigas; Huîtres creuses.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/00165/27641/25789.pdf

Gamete quality in triploid Pacific oyster (Crassostrea gigas)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Suquet, Marc; Malo, Florent; Quere, Claudie; Ledu, Christophe; Le Grand, Jacqueline; Benabdelmouna, Abdellah.
Triploidy induction in shellfish aims to obtain faster growth and sterility of reared individuals. Triploid Pacific oysters are most often not totally sterile, but have greatly reduced reproductive capacities compared to those recorded in diploid individuals. The description of gamete output in triploid aquatic animals is most often confined to the assessment of fecundity in females. The present work aims at further describing gamete quality of triploid Pacific oysters and comparing it to values observed in diploid individuals. Diploid and triploid oysters (produced by mating tetraploid males × diploid females) were reared in standard conditions and then transferred to the wild to allow the offspring to attain reproductive maturity. At the end of...
Tipo: Text
Palavras-chave: Crassostrea gigas; Reproduction; Triploidy; Gamete.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00277/38835/37581.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Biologie conchylicole - Année 1954
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade, biologie conchylicole : année 1954
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1954
URL: http://archimer.ifremer.fr/doc/00069/18066/15609.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1957
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1957
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1957
URL: http://archimer.ifremer.fr/doc/00069/18069/15613.pdf

Niveau de ploïdie des naissains d'huître creuse captés dans les bassins de Marennes Oléron et d'Arcachon. Réseau Biovigilance, campagne 2006
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Grouhel, Stephanie; D'Amico, Florence; Cantin, Christian; Grizon, James; Seugnet, Jean-luc.
Le suivi de la ploïdie du naissain dans les bassins de Marennes Oléron et d'Arcachon a été réalisé par cytométrie en flux. Les échantillons de naissain naturel ont été prélevés sur 3 sites dans chaque bassin et pour un total de 1000 animaux analysés. Les calculs de prévalence montrent que les échantillons utilisés durant cette étude nous permettent de détecter, avec une probabilité de 99 pour cent, toute apparition de polyploïdes. Nos résultats de suivi de ploïdie concluent à l'absence d'animaux polyploïdes dans les deux bassins prospectés. Ils sont donc conformes aux prévisions en la matière et n'apportent aucune raison de modification des pratiques en cours. Cependant, des études concernant la fertilité des triploïdes, la nature de leurs gamètes et de...
Tipo: Text
Palavras-chave: Génétique; Reproduction; Captage; Ploïdie; Crassostrea gigas; Marennes Oléron; Arcachon.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00070/18130/15678.pdf

Characterization of GnRH-related peptides from the Pacific oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bigot, Laetitia; Zatylny-gaudin, Celine; Rodet, Franck; Bernay, Benoit; Boudry, Pierre; Favrel, Pascal.
Gonadotropin-releasing hormone (GnRH), a key neuropeptide regulating reproduction in vertebrates has now been characterized in a number of non-vertebrate species. Despite the demonstration of its ancestral origin, the structure and the function of this family of peptides remain poorly known in species as distant as lophotrochozoans. In this study, two GnRH-related peptides (Cg-GnRH-a and CgGnRH-G) were characterized by mass spectrometry from extracts of the visceral ganglia of the Pacific oyster Crassostrea gigas. These peptides showed a high degree of sequence identity with GnRHs of other mollusks and annelids and to a lesser extent with those of vertebrates or with AKH and corazonins of insects. Both the mature peptides and the transcript encoding the...
Tipo: Text
Palavras-chave: Mollusk; Bivalve; Oyster; Neuroendocrinology; Reproduction; GnRH.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00079/19003/17477.pdf

Contribution a l'étude de l'étrille Necora puber dans le Mor-Braz : données halieutiques, biologiques et pathologiques
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Wilhelm, Gwenaëlle.
The velvet swimming crab Necora puber, commonly found on the French coast was an important resource for inshore fishermen of the Mor-Braz sea in Southern Brittany before the production collapsed in 1985. Although there are still many uncertainties as to the reasons for this, we note that the collapse took place after a significant ecological imbalance which locally caused massive mortality of many marine organisms in 1982.  Without being obviously linked to the former point, mortality due to pathological causes was observed in velvet swimming crabs. Seeing the lack of general knowledge about these crabs, this study was designed to acquire data about its fishery and its biology. The first part focused on fleet, fishing effort and yield trends in the...
Tipo: Text
Palavras-chave: Parasitic dinoflagellate; Hematodinium; Northern Biscay; South Brittany; Pathology; Reproduction; Growth; Fishing; Necora puber; Velvet swimming crab; Dinoflagellé parasite; Hematodinium; Nord Gascogne; Bretagne sud; Pathologie; Reproduction; Croissance; Pêche; Necora puber; Etrille.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/1995/these-1197.pdf

Etude comparée de deux années de reproduction de l'huître creuse Crassostrea gigas dans le bassin de Marennes-Oléron : aspects hydrobiologiques
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Berthome, Jean-paul; Razet, Daniel; Garnier, Jacqueline.
The detection of larval oysters emissions and their evolution were studied in 1977 and 1978 and compared within two areas of the Marennes Oleron basin: The Seudre river and the northern part of the basin. In 1977, the earlier fication of spat were noted as soon as July 14th in both areas while in 1978, it had been necessary to wait till the end of August to see the beginning of settling. Hydrobiological datas were correlated one with others, as well as with quantites results of 1978 provide us with correlations indicating the importance of continental inputs.
Tipo: Text
Palavras-chave: Huître creuse; Crassostrea gigas; Reproduction; Larves; Marennes Oléron.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00018/12953/9928.pdf

Observations sur la répartition en profondeur des larves de "Gryphaea angulata" dans les eaux de la région de Marennes
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Chaque année, les laboratoires côtiers de l'Office Scientifique et Technique des Pêches Maritimes effectuent, dans le courant de l'été, des prélèvements de plancton et procèdent à des numérations de larves d'huîtres sur les échantillons récoltés. Les résultats numériques sont transmis aussi rapidement que possible aux ostréiculteurs et aux Administrateurs de l'Inscription Maritime, Chefs de Quartier, pour affichage. Ces résultats indiquent l'allure générale du phénomène de la reproduction des huîtres et donnent des renseignements sur les dates les plus favorables à la pose des collecteurs. Cependant, il a été quelques fois constaté que des fixations de larves se produisaient sur les collecteurs alors que les numérations étaient nulles. Nous avons entrepris...
Tipo: Text
Palavras-chave: Reproduction; Larves; Huîtres; Gryphaea angulata; Marennes Oléron; Charente-Maritime; Numération larves.
Ano: 1952
URL: http://archimer.ifremer.fr/doc/00003/11457/8014.pdf

Characterisation of physiological and immunological differences between Pacific oysters (Crassostrea gigas) genetically selected for high or low survival to summer mortalities and fed different rations under controlled conditions
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Delaporte, Maryse; Soudant, P; Lambert, C; Jegaden, M; Moal, Jeanne; Pouvreau, Stephane; Degremont, Lionel; Boudry, Pierre; Samain, Jean-francois.
Within the framework of a national scientific program named "MORtalites ESTivales de l'huitre creuse Crassostrea gigas" (MOREST), a family-based experiment was developed to study the genetic basis of resistance to summer mortality in the Pacific oyster, Crassostrea gigas. As part of the MOREST project, the second generation of three resistant families and two susceptible families were chosen and pooled into two respective groups: "R" and "S". These two groups of oysters were conditioned for 6 months on two food levels (4% and 12% of oyster soft-tissue dry weight in algal dry weight per day) with a temperature gradient that mimicked the Marennes-Oleron natural cycle during the oyster reproductive period. Oyster mortality remained low for the first two...
Tipo: Text
Palavras-chave: Summer mortality; Reproduction; Reactive oxygen species ROS; Hemocyte parameters; Genetic selection; Crassostrea gigas.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3578.pdf

La pêcherie du tourteau Cancer pagurus sur les cotes de Bretagne Sud : déplacements, croissance, reproduction
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Foll, Anne.
Targeted fishing of the edible crab Cancer pagurus has progressively replaced that of overfished lobster and spiny lobster stocks.  Over the past few years it has become a significant activity for small-scale fishing vessels from various harbours on the Channel and the Atlantic French coast. Official figures show that national landings amounted to 10,000 tonnes in 1980. In spite of this fishery being recent, drops in yield in some areas have brought about changes in the way it is exploited, with more distant fishing grounds and redeployments.  This doctoral thesis study was conducted in relation with the Scientific and Technical Institute of Maritime Fisheries (ISTPM), contributing to the implementation of a rational edible crab management policy....
Tipo: Text
Palavras-chave: Reproduction; Growth; Migration; South Brittany; Northern Biscay; Fishery; Cancer pagurus; Edible crab; Reproduction; Croissance; Migration; Bretagne sud; Nord Gascogne; Pêche; Cancer pagurus; Crabe tourteau.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/these-1204.pdf

Manque de naissain de moules pendant trois années consécutives dans les bouchots du Pertuis Breton. Observations préliminaires sur l'influence de la température et de l'ensoleillement
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dardignac, Marie-jose; Prou, Jean.
Arnong the last ye3Is, three years are pointed out by paar mussei's recruitment in the Pertuis Breton. This lack leJds ta a Strong decrease of lhe cultivateà biamass. The influences of temperature and sunshine were studied. The lemperature daes nal seem ta be a very important faclor. On the other hand, awing ta the technicals used in the Pertuis Breton an important sunshine correlated with a spring tide during seed settlement on ropes appears ta be a maj or factor in spatfall suceess. This hypothesis is strenghened by the fact that, during the period of study no recruitment failure were observed on the off- shore long lines.
Tipo: Text
Palavras-chave: Reproduction; Moules; Recrutement; Captage; Pertuis Breton; Département Charente-Maritime.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00141/25189/23295.pdf

Reproductive effort of Pacific oysters: A trait associated with susceptibility to summer mortality
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Huvet, Arnaud; Normand, Julien; Fleury, Elodie; Quillien, Virgile; Fabioux, Caroline; Boudry, Pierre.
Summer mortality of the Pacific oyster Crassostrea gigas is the result of a complex interaction between oysters, their environment and their pathogens. The physiological status of an oyster, especially its reproductive status, is suspected to play a significant role in the outcome of this interaction. As genetic variability exists for susceptibility to summer mortality, resistant (R) and susceptible (S) oyster lines were produced using a divergent selection scheme. The present paper reports a histological study on gonad area, which is representative of reproductive effort, in randomly chosen five R and five S oyster lines. The R lines showed a significantly lower gonad area than the S lines (P&lt;0.001). with an estimated mean difference of 12.5%, whereas,...
Tipo: Text
Palavras-chave: Bivalve mollusc; Crassostrea gigas; Reproduction; Selected lines; Summer mortality.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00006/11766/8502.pdf

Reproduction de la langoustine, Nephrops norvegicus dans la region sud Bretagne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Morizur, Yvon.
The size and age at sexual maturity of the lobsters was determined by secondary sexual characteristics (1) morphological criteria such as length of P1 protopodite, size of the abdomen, and the presence or absence of ovarian hairs in the female; and (2) functional criteria such as the presence of spermatophores in the female and development of the ovaries. A study of fecundity was carried out after maturation of the ovaries and at the end of incubation. The number of eggs lost during incubation was estimated at 45%. The contribution of different age classes to the global fecundity of the stock was simulated on a model of fecundity by recruits.
Tipo: Text
Palavras-chave: Nephrops norvegicus; Reproduction; Atlantique nord est; France; Bretagne; Finistere sud; Crustacea; Decapoda; Homaridae; Nephrops norvegicus; Incubation; Dimorphisme; Spermatophore; Ovaire; Fecondite; Maturite; Reproduction sexuee.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/these-2338.pdf

La biologie de la lamproie marine (Petromyzon marinus Linne 1758) de la côte atlantique française
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Grellier, Patrick.
Vertebrate Cyclostome, the european sea lamprey is a sea spawning migrator amphihaline species, which is a parasite during its growing phase at sea. After the spawning migration, lampreys couple in the upper reach of water courses, they lay their eggs, then die from physiological misery. The eggs develop sheltered into a nest until hatching of small larvae, the ammocoetes. Morphologically very different from the adults, the ammocoetes spend a several years sedentary life, being burried into the sediment. Then, they metamorphose into young lampreys which undertake their downstream migration. As soon as they enter sea water, they continue growing at the expense of several species of fishes.
Tipo: Text
Palavras-chave: Morphologie; Cycle Biologique; Migrations; Reproduction.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00085/19616/17256.pdf

Impact of food availability on energy storage and defense related hemocyte parameters of the Pacific oyster Crassostrea gigas during an experimental reproductive cycle
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Delaporte, Maryse; Soudant, P; Lambert, C; Moal, Jeanne; Pouvreau, Stephane; Samain, Jean-francois.
The aim of this study was to test the effect of food quantity on energy storage and defense capacities of oysters during a reproductive cycle. One-year-old Crassostrea gigas oysters were fed two different dietary rations (4% and 12% of oyster dry weight in algal dry weight per day) in controlled experimental conditions over an annual cycle. Oyster dry weights, carbohydrate and lipid contents, energetic adenylate charge, and hemocyte parameters of oysters were significantly affected by reproductive processes related to seasonal temperature variation and, to a lesser extent, by the dietary rations. Energy parameters decreased during gametogenesis as gonads developed then increased during the gonad resorption phase. The additional energy provided to oysters...
Tipo: Text
Palavras-chave: Reactive oxygen species production; Reproduction; Phagocytosis; Hemocyte parameters; Energy storage; Crassostrea gigas.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1549.pdf

Genetic variation and trade-offs for reproduction ans survival in the Pacific oyster Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boudry, Pierre; Degremont, Lionel; Bedier, Edouard; Pouvreau, Stephane; Normand, Julien; Ernande, Bruno.
To date, the most significant method to genetically reduce reproductive effort in the Pacific oyster (Crassostrea gigas) has been through the production of triploids, especially since the development of tetraploid lines allowing the breeding of 'natural' triploids. Gametogenesis of triploid oysters is strongly reduced compared with diploids, although they are not fully sterile and can produce viable gametes and some progenies when crossed with diploids. Reduced reproductive allocation and higher heterozygocity are commonly proposed as the main reasons why triploids often present superior yield compared with diploids. Temperature and food availability are known to favour gametogenesis in triploids, but the existence of genetic variation for this trait...
Tipo: Text
Palavras-chave: Selective breeding; Reproduction; Genetic variation; Crassostrea gigas; Pacific oyster; Genetic.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/acte-3445.pdf

Observations sur la maturité sexuelle et la ponte du tourteau Cancer pagurus en Manche
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Latrouite, Daniel; Noel, Philippe.
Few observations have been reported on the reproductive cycle and size at maturity of female edible crab in the Channel. This could be linked to non catchability of berried females. During the present study carried over three different years, females were taken from commercial catches prior to the spawning period and placed in tanks in the laboratory. The various criteria used to establish the mean size at first maturity are discussed and the relation between size and functional maturity is described. The smallest berried females are at a carapace length of 76mm, and maximum values are reached at about 105mm. The mean value is between 85 and 90mm carapace length. The duration of the spawning period was the same in each years, extending from mid-November to...
Tipo: Text
Palavras-chave: Spawning; Sexual maturity; Reproduction; Channel; Cancer pagurus; Edible crab; Reproduction; Ponte; Manche; Tourteau; Maturité sexuelle; Cancer pagurus.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/acte-1420.pdf

Fécondités individuelle et par recrue du homard européen Homarus gammarus (L.) des cotes françaises
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Latrouite, Daniel; Morizur, Yvon; Raguenes, Gerard.
Several relationships between the fecundity and the weight or the size of females have been studied for three different (based on "eye-index") stages of incubation. The relationship between the average weight of eggs at the beginning of incubation and the size of the females shows that the egg size varies according to the female's size. Loss of eggs during incubation has been studied ; the average loss between the two extreme stages of incubation is around 27%. This is a lowered value of what accurs during the whole incubation period. Egg losses are greater for small females than for big females. The annual frequency of spawning and size at first maturity have been determined in for differents fishing effort than by the commercial size.
Tipo: Text
Palavras-chave: Maturity; Fecundity per recruit.; Reproduction; Europe; France; Lobster; Aquiculture; Homarus gammarus; Fecundity; Fécondité par recrue; Fécondité; Maturité; Reproduction; Homarus gammarus; Homard.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1404.pdf

Effet du CHANGEMENT GLOBAL sur la BIOLOGIE de l’huître creuse (C. gigas) dans le Bassin de Marennes-Oléron. Résultats, hypothèses et discussion
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick; Polsenaere, Pierre; Le Moine, Olivier.
Historiquement, les pêches de larves de l’huître creuse (C. gigas) ont lieu en six stations du BMO depuis les années 70, de début juin à la première semaine de septembre. La comparaison des captures saisonnières et hebdomadaires entre les périodes P1 (1977-1991) et P2 (2000-2015) montre un ajustement de la distribution des captures de larves à un modèle polynomiale d’ordre 4 pour P1 (R2 = 0,77), puis d’ordre 2 pour P2 (R2 = 0,86). Les modèles de distribution des captures montrent que la saison de reproduction a doublé entre les deux périodes. Elle s’étend aujourd’hui de juin à septembre. Devant l’extension de la saison de reproduction, la saison de pêche expérimentale est aujourd’hui trop réduite. Toutefois, le pic d’abondance des captures n’a pas changé...
Tipo: Text
Palavras-chave: Huître; C. gigas; Changement global; Réchauffement climatique; Reproduction; Larve; Mortalité; Phénologie; Ostréiculture; Bassin de Marennes Oléron; Phytoplancton; Chlorophylle a; Température.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00441/55239/56723.pdf

Rapport sur l'activité du laboratoire de La Tremblade - Année 1969
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade année 1969
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1969
URL: http://archimer.ifremer.fr/doc/00069/18051/15593.pdf

The quality of great scallop (Pecten maximus) sperm after thawing
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Suquet, Marc; Gourtay, Clemence; Donval, Anne; Le Goic, Nelly; Quere, Claudie; Malo, Florent; Le Grand, Jacqueline; Ratiskol, Dominique; Mingant, Christian; Fauvel, Christian.
Most publications devoted to the cryopreservation of mollusc sperm have focused on the definition of technical protocols, avoiding the description of sperm quality after thawing. The present study investigated the effects of cryopreservation on sperm quality in the great scallop. Wild scallop were fished during the natural spawning period and conditioned in the hatchery before use. Sperm samples were obtained after intragonadal injection of serotonin and cryopreserved using a previously published protocol.  Sperm quality was assessed using a panel of four parameters: sperm motility characteristics, using a a computer assisted sperm analysis plugin with Image J, intracellular ATP content using an ATP-Lite kit, sperm integrity, using flow cytometry and sperm...
Tipo: Text
Palavras-chave: Pecten maximus; Reproduction; Gamete; Sperm; Cryopreservation.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00317/42862/43912.pdf

Contribution à l'étude de la reproduction du pétoncle noir (Chlamys varia) de la baie de Quiberon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Perodou, Dominique; Latrouite, Daniel.
La perspective de reconstituer des gisements de pétoncle ou de pratiquer une aquaculture extensive nous a conduits à réaliser en baie de Quiberon des expériences de captage de naissain. Des observations sur la reproduction ont été faites à cette occasion. La période d'activité gonadique s'étend de Mars à Septembre mais la ponte principale intervient au début du mois de juin ; elle ne se concrétise par un bon taux de fixation que si la température de l'eau est au moins égale à 16°C. Des pontes secondaires sont observées jusqu'en Août - Septembre. Cette espèce est hermaphrodite est la relation entre le sex-ratio et la taille conduit à suggérer que la création de réserves provisoires sur un gisement exploité serait de nature à améliorer le potentiel...
Tipo: Text
Palavras-chave: Pétoncle noir; Chlamys varia; Reproduction; Captage; Baie de Quiberon.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00021/13260/10307.pdf

Optimizing the exploitation of wild and reared bluefin tunas under the constraint of sustainability: the Ifremer R&amp;D project
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Coves, Denis; Rene, Francois; Fauvel, Christian.
A brief account is given of a research project commenced in 2000 by IFREMER concerning aspects of wild bluefin farming in offshore cages and reproduction control in land-based facilities. Three inter-related sub­ projects have been suggested: (i) wild fish ongrowing and/or fattening; (ii) reproduction; and (Hi) fingerling production and improvement of the understanding of early stage recruitment limitations. The Integration of this project in other EU community activities is discussed.
Tipo: Text
Palavras-chave: Elevage du thon rouge sauvage; Cages offshore; Installations à terre; Production d'alevins; Engraissement; Reproduction; Wild bluefin tuna farming; Offshore cages; Land based facilities; Fattening; Fingerling production; Reproduction.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00372/48347/48517.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1965
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade année 1965
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1965
URL: http://archimer.ifremer.fr/doc/00069/18047/15589.pdf

Approches cellulaires et moléculaires de la gestion des réserves chez l’huître, Crassostrea gigas (Thunberg, 1793). Suivi saisonnier du métabolisme énergétique et effet du niveau trophique sur la mise en réserve
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Hanquet, Anne-caroline.
In the Pacific oyster, Crassostrea gigas, the energy necessary for general metabolism and gametogenesis is mainly provided by the glycogen stored in the vesicular cells. The first level of glycogen metabolism control is the entrance of glucose into cells. The monitoring of the uptake capacity of [U-14C] D-glucose revealed the existence of a saturable component with kinetic constants: Km = 0.71 mM ; Vmax = 0.22 nmol/h/106cells. The use of inhibitors has revealed the presence of carriers belonged to GLuT and SGLT types. A follow-up showed a seasonal variation of the uptake capacity and incorporation of glucose into glycogen, and a high expression of SGLT during mobilization of glycogen and gametes maturation. A bioassay in a controlled rearing system has...
Tipo: Text
Palavras-chave: Crassostrea gigas; Glucides métabolisme; Glucose; Reproduction; Cryoconservation; Crassostrea gigas; Carbohydrate metabolism; Glucose; Reproduction; Cryoconservation.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00013/12399/9185.pdf

Bases biologiques de la production de deux Mollusques d'intérêt économique: reproduction chez Megathura crenulata, reproduction et développement chez Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cannuel, Rozenn.
The reproductive cycle of Megathura crenulata was documented and quantification of oocyte lipid reserves with lipo-specific stains was explored in both this species and in Crassostrea gigas.  The necessity of providing food to female broodstock C. gigas in spring was re-evaluated, because subsequent larval and post-larval rearing performance was not affected by broodstock starvation during conditioning.  Developmental study of the organs responsible of particle processing in C. gigas allowed the identification of critical stages related to the ontogenesis of each organ, as well as a better understanding of the evolution of these organs, highly-modified in the Ostreidae. Ciliary type identification and mucocyte mapping from post-larval to adult stage showed...
Tipo: Text
Palavras-chave: Mucocytes; Mantle; Gill; Larvae postlarvae juveniles; Feeding; Crassostrea gigas; Megathura crenulata; Development; Reproduction; Mucocytes; Manteau; Branchie; Larves post larves juvéniles; Alimentation; Crassostrea gigas; Megathura crenulata; Développement; Reproduction.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-1371.pdf

Niveau de ploïdie des naissains d'huître creuse captés dans les bassins de Marennes Oléron et d'Arcachon. Réseau Biovigilance, campagne 2008
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Benabdelmouna, Abdellah; Hubert, Mathias; Cantin, Christian; D'Amico, Florence; Grizon, James; Seugnet, Jean-luc.
Le suivi de la ploïdie du naissain capté dans les deux principaux bassins de captage que sont Marennes Oléron et d'Arcachon a été réalisé par cytométrie en flux . Les échantillons de naissain naturel ont été prélevés sur 3 sites dans chaque bassin et pour un total de 1002 animaux analysés. En tenant compte de notre échantillonnage, nos résultats de suivi de ploïdie concluent à l 'absence d'animaux polyploïdes. triploïdes ou tétraploïdes, captés dans les deux bassins prospectés. Ces résultats sont conformes aux prévisions en la matière et n'apportent donc aucune raison de modification des pratiques en cours dans la filière ostréicole triploïde. Cependant, pour la deuxième année consécutive, les deux bassins de captage que sont Marennes Oléron et Arcachon...
Tipo: Text
Palavras-chave: Génétique; Reproduction; Captage; Ploïdie; Aneuploïdie; Marennes Oléron; Arcachon; Crassostrea gigas.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00070/18131/15679.pdf

Traits biologiques et exploitation du bar commun Dicentrarchus labrax (L.) dans les pêcheries françaises de la Manche et du golfe de Gascogne.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fritsch, Manon.
Sea bass Dicentrarchus labrax (Linné, 1758) is a fish of major interest in France and in the British Isles. It is the main target species for some anglers and a growing number of professional fishermen. In spite of this, the reproduction of sea bass in natural environment, the identification of its populations, as well as the fleet participating to and the level of its exploitation are poorly known. Thus, in the perspective of a future management of the bass fisheries, this thesis collected required data for the analysis of the sea bass resource in the English Channel and the Bay of Biscay. A first chapter describes to the principal biological and ecological characteristics of Dicentrarchus labrax. The five following chapters deal successively with: (i)...
Tipo: Text
Palavras-chave: Fisheries management; Fisheries exploitation; Angling; Tagging; Microsatellite loci; Reproduction; Dicentrarchus labrax; Gestion de stocks; Exploitation; Pêche récréative; Pêcheries; Marquage; Marqueurs microsatellites; Reproduction; Dicentrarchus labrax.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-1088.pdf

Temperature and photoperiod drive Crassostrea gigas reproductive internal clock
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fabioux, Caroline; Huvet, Arnaud; Le Souchu, Pierrick; Le Pennec, Marcel; Pouvreau, Stephane.
This study examined the gametogenic cycle of Crassostrea gigas in controlled conditions over one year, with a focus on the initiation of gametogenesis. This work analysed also the role of temperature and photoperiod in the regulation of oyster reproduction. Broodstock were maintained in natural (NC), accelerated (AC) and perpetual winter (WC) conditions of temperature and photoperiod, with feeding ad libitum. Qualitative and quantitative analyses of the reproductive pattern were performed using biometric measurement approach, sex ratio determination, histology and a gonad filling index. Each experimental treatment led to different strategies for growth and resource allocation. The gametogenic cycle, appeared entirely modulated, accelerated or delayed, by...
Tipo: Text
Palavras-chave: Temperature; Regulation; Gonad filling index; Gonial mitosis; Reproduction; Oyster.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-826.pdf

Pêche de la langouste rouge Palinurus elephas en france. Eléments pour fixer une taille marchande
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Latrouite, Daniel; Noel, Philippe.
From the end of XIX century to the 1950', spiny lobster (Palinurus elephas) fishing has been an important economical activity for potters of Brittany and led to landings over two thousands tons. Later, impoverishment of traditional fishing grounds and closure, to French fleet, of foreign fishing area obliged a reconversion of potters toward crabs (edible crab and spider crab). Recently in the 80', development of a netting activity has restarted catches of spiny lobster (at a modest scale). Presently, the only reglementary measure concerning this species/metier is a national minimum legal size (total length) but European Commission has wished that a European MLS would be established. In that aim, this paper presents the main features of spiny lobster...
Tipo: Text
Palavras-chave: Reproduction; Fishery; France; Atlantic; Droit; Commerce; Size; Spiny lobster; Palinurus elephas; Biometry; Fishing; Reproduction; Biométrie; Pêche; Palinurus elephas; Langouste rouge.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/acte-1415.pdf

The Paracentrotus lividus populations from the northern Moroccan Atlantic coast: growth, reproduction and health condition
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bayed, Abdellatif; Quiniou, Francoise; Benrha, Ali; Guillou, Monique.
The condition of three intertidal Paracentrotus lividus populations, which inhabit an area between Rabat and Casablanca (Morocco) known by its high wave energy and its substantial anthropogenic disturbances were described. The growth rate of the juvenile sea urchins in this intertidal zone was low compared with more sheltered populations. A sharp increase in the gonad index was observed between January and March at the beginning of a period of algal production, and was concomitant with increases in seawater temperature and food consumption rate. This gonad index increase was followed by a single spawning period occurring between March and June, probably triggered by the phytoplankton bloom induced by upwelling conditions. Larval development in all three...
Tipo: Text
Palavras-chave: Moroccan Atlantic; Growth; Population; Juvenile; Reproduction.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-602.pdf

Estimation du nombre de tortues vertes femelles adultes Chelonia mydas par saison de ponte à Tromelin et Europa (Océan Indien) (1973-1985)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Gall, Jean-yves; Bosc, Pierre; Taquet, Marc.
A research programm on the marine green turtle Chelonia mydas nesting on the two major reproduction sites for the species in the Indian Ocean, conducled over last 15 years, included intensive tagging programm. Processing of these lagging data provides estimations of adult female populations {or each site and season from two independent methods. First classical method is the ratio of total number of nests produced over a define time on the mean individual number of nests by female during the same time (November, December, January). The computed mean individual number ranges from 3 to 3.5 obtained over 2 to 3 months. The second method is the multiple capture-recapture method (JOLLY, 1965; SEBER, 1965; MANLY, 1984). Il is an original tentative of applying...
Tipo: Text
Palavras-chave: Tortue verte; Chelonia mydas; Reproduckion; Ponte; Population; Femelles; Marquage; Recapture; Océan Indien.; Marine green turtle; Chelonia mydas; Capture; Recapture; Indian Ocean; Nesting; Populations; Tagging; Reproduction.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/00113/22406/20103.pdf

The sexuality of cultured hermaphroditic fish species: Analysis of morphological and endocrinological features in a protogynous hermaphrodite, Epinephelus microdon , as a basis for further research to control reproduction in the grouper
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Debas, L; Fostier, A; Fuchs, Jacques; Weppe, M; Nedelec, Georges; Benett, A; Cauty, C; Jalabert, B.
The Polynesian grouper, Epinephelus microdon , was chosen as an experimental model in order to investigate about factors controlling sexuality in groupers.
Tipo: Text
Palavras-chave: French Polynesia; Epinephelus microdon; Sex ratio; Sexual maturity; Sex hormones; Sex determination; Sex; Fish culture; Endocrinology; Reproduction; Sex reversal; Animal morphology.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1439.pdf

Rapport de mission aux Etats-Unis du 4 au 22 janvier 1988
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fauvel, Christian.
During this visit, research work on the physiology and zootechny of reproduction of different US teams were compared to ours. It is clear that we have the same problems to solve and that  research programs are rather similar, but they must take into account the local conditions. This fact limits the possibilities of cooperation. Nevertheless a very good knowledge of each work has been noted.
Tipo: Text
Palavras-chave: Reproduction; Physiologie; Crustacés; Maturation; Zootechnie; Reproduction; Maturation; Physiology; Zootechny.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00374/48516/48789.pdf

Comparaison de deux méthodes de prélèvement pour le dénombrement des larves de Crassostrea gigas en zone conchylicole
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard; Borel, Michel; Robert, Rene; Laborde, Jean-louis.
La numération des larves d'huître dans le plancton renseigne les ostréiculteurs sur la date de pose des collecteurs. La technique utilisée est très ancienne (BOURY, 1928) ; pour chaque station trois prélèvements par traits de filets pendant 10 minutes sont effectués : deux en surface (filet 200 et filet 130) et un à 1 mètre de profondeur (filet 130). Une méthode par pompage avec mesure instantanée du volume d'eau filtrée a été mise au point (prélèvements en surface et à 1 mètre de profondeur, et rétention des véligères sur filets 200). La comparaison des deux techniques met en évidence l'inadaptation de l'ancienne méthode. Le choix de la porosité (70 µm pour les filets 200) est mal adapté à la récolte des larves D (stade 1) dont le nombre peut être sous...
Tipo: Text
Palavras-chave: Numération; Technique; Reproduction; Crassostrea gigas; Larves; Naissain; Recrutement; Ostréiculture.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-6444.PDF

La reproduction de Crassostrea gigas Thunberg dans le bassin d'Arcachon: bilan de deux années d'observations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard.
A la suite des mortalités massives qui avaient affecté la population de C. angulata Lmk dès le premier trimestre 1971 dans le bassin d'Arcachon, la décision fut prise de renforcer rapidement le stock des géniteurs de C. gigas, susceptible d'assurer dès l'été une récolte de naissains et de permettre dans l'avenir une reconstitution des gisements naturels anéantis. En effet la présence sur les collecteurs immergés au cours de l'été 1970 de quelques sujets de l'espèce nouvellement introduite prouvait la possibilité pour les huîtres japonaises de se reproduire dans nos eaux.
Tipo: Text
Palavras-chave: Ostréiculture; Huître; Crassostrea gigas; Reproduction; Croissance; Bassin Arcachon; Gironde.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/00009/11981/8685.pdf

Cycle de reproduction naturelle de l'huître creuse Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Goulletquer, Philippe.
Since its introduction to French coasts in the 1970s, Crassostrea gigas completes its reproductive cycle—i.e. regular annual recruitment and establishment of natural populations—in only two sectors (Charentes coast and Arcachon Bay). In other areas of Pacific oyster production (Normandy, Brittany, Vendée, Mediterranean), complete gametogenesis may occur, resulting in spawning events and even recruitment in favourable temperatures. Temperature seems to be the main limiting factor for in situ reproduction. Growth and reproduction occur simultaneously. The study of the reproductive cycle of one-year old oysters showed that gametogenesis was asynchronous with high interannual variability and growth appeared to take precedence over reproduction. On the...
Tipo: Text
Palavras-chave: Physiologie; Facteurs environnementaux; Cycle; Reproduction; Crassotrea gigas; Huîtres.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/1995/acte-3209.pdf

Growth and gonad development of the tropical black-lip pearl oyster, Pinctada margaritifera (L.), in the Gambier archipelago (French Polynesia)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Moullac, Gilles; Tiapari, Jerome; Teissier, Hinano; Martinez, Elodie; Cochard, Jean-claude.
The growth and reproductive cycle of cultured black-lipped pearl oysters, Pinctada margaritifera (L.), were studied in the Gambier Islands (134°52' W, 23°07' S) from September 2002 to August 2003. Temperatures were recorded throughout the year, revealing seasonal temperature variations between 22.3 °C and 27.8 °C. The mean annual chlorophyll a value, as computed from satellite data, was 0.188 ± 0.075 µg L-1. To study growth and reproduction, 720 two-year-old individuals were ear hung on longlines suspended at a depth of 7 m. Samples were taken twice a month to obtain the following measurements: shell height; wet weight of flesh and total oyster; dry weight of adductor muscle, mantle and visceral mass; and glycogen content. Gonad development was also...
Tipo: Text
Palavras-chave: Pearl oyster; Pinctada margaritifera; Growth; Reproduction; Temperature; Chlorophyll; Seasonality; Gambier archipelago.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00040/15099/13570.pdf

Effect of genistein-enriched diets on the endocrine process of gametogenesis and on reproduction efficiency of the rainbow trout Oncorhynchus mykiss
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bennetau Pelissero, Catherine; Breton, Bernard; Bennetau, Bernard; Corraze, Genevieve; Le Menn, Françoise; Davail Cuisset, Blandine; Helou, Chantal; Kaushik, Sadasivam.
Three practical diets were formulated to contain 0, 500, or 1000 ppm genistein. The three diets were distributed for 1 year to groups of rainbow trout undergoing their first gametogenesis and until spawning. Growth performance of rainbow trout was not affected by dietary treatments. Plasma cholesterol levels were equivalent between groups. In males, a slight but constant induction of vitellogenin (VTG) synthesis and a decrease in testosterone levels were observed. A slight decrease in plasma levels of beta FSH and beta LH was noticed at the end of spermatogenesis in the male fish fed a diet with 500 ppm (genistein) (from 2.16 +/- 0.39 to 1.47 +/- 0.23 for beta FSH and from 0.44 +/- 0.09 to 0.31 +/- 0.09 for beta LH). There was a significantly reduced 17...
Tipo: Text
Palavras-chave: Diet; Reproduction; GTH; Vitellogenin; Steroid; Trout; Genistein.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-738.pdf

Etude comparative du cycle de reproduction de la palourde Ruditapes decussatus en milieu naturel (sud Tunisie) et contrôlé (écloserie)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Hamida, Leila; Medhiouband, Mohamed; Cochard, Jean-claude; Romdhane, Mohamed; Le Pennec, Marcel.
A comparative study of the reproductive cycle of Ruditapes decussatus under natural (South of Tunisia) and controlled conditions (hatchery). The aim of this study was to describe and compare the gametogenic activity of Ruditapes decussatus in situ and in hatchery. Criteria of maturity were characterized and the positive role of conditioning in the success of artificial reproduction was underlined. Specimens sampled in the South of Tunisia were conditioned at the experimental station of Monastir (Tunisia). The parameters studied were the variation of the condition index and the frequency distribution of oocyte diameters. Results showed that the reproductive cycle was continuous in situ. Gametogenesis started in January and February. Gonadic activity...
Tipo: Text
Palavras-chave: Ruditapes; Natural conditions; Hatchery; Reproduction; Gonatic activity; Gametogenesis.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-882.pdf

Chronic and severe hypoxic conditions in Paracas Bay, Pisco, Peru: Consequences on scallop growth, reproduction, and survival
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Aguirre-velarde, Arturo; Thouzeau, Gerard; Jean, Frederic; Mendo, Jaime; Cueto-vega, Rosa; Kawazo-delgado, Midori; Vásquez-spencer, Jazmín; Herrera-sanchez, Diego; Vega-espinoza, Alex; Flye-sainte-marie, Jonathan.
The response of Argopecten purpuratus (Peruvian scallop) to environmental conditions was studied in the upwelling-influenced Bay of Paracas (Peru). Scallops growth and reproduction were monitored weekly over a 7-month period under two conditions (culture depths): on the bottom and 2 m above (suspended culture). At the same time, a high-frequency environmental monitoring was realized at the aforementioned depths. The results indicate that environmental conditions in the Bay are highly variable, especially during the summer: temperature fluctuations up to 8∘C were recorded in less than one day while oxic conditions ranged from oversaturation to anoxia. Milky-turquoise waters discoloration events (sulphide presence suspected) were simultaneously observed...
Tipo: Text
Palavras-chave: Argopecten purpuratus; High frequency monitoring; Coastal upwelling; Hypoxic/anoxic conditions; Growth; Reproduction; Aquaculture; Milky-turquoise water/aguas Blancas.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00504/61547/65430.pdf

Reproductive dynamics of swordfish (Xiphias gladius) in the southwestern Indian Ocean (Reunion Island). Part 2: fecundity and spawning pattern
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Poisson, Francois; Fauvel, Christian.
Batch fecundity and relative fecundity of swordfish (Xiphias gladius) in the southwestern Indian Ocean were estimated from seven gravid swordfish females (size range 127-225 cm lower jaw-to-fork length, LJFL) with unovulated, hydrated oocytes collected onboard Reunion-based (France) longline swordfish fishing vessels between December 1999 to January 2001. To investigate the spawning pattern of swordfish, we used data collected through a combination of two at sea sampling regimes. A total of 17 007 geo-located size data of swordfish were recorded during 8 years (1993-2001) and a total of 1727 (size range 75-289 cm, LJFL) swordfish gonads (1107 females and 620 males) were sampled from May 1998 to January 2001. The estimated batch fecundity ranged from 995...
Tipo: Text
Palavras-chave: Xiphias gladius; Swordfish; Reproductive strategy; Gravimetric method; Image processing; Spawning frequency; Indian Ocean; Fecundity; Reproduction.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6354.pdf

Latitudinal influence on gametogenesis and host–parasite ecology in a marine bivalve model
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mahony, Kate E.; Lynch, Sharon A.; Egerton, Sian; Laffan, Rebecca E.; Correia, Simão; De Montaudouin, Xavier; Mesmer‐dudons, Nathalie; Freitas, Rosa; Culloty, Sarah C.
Reproduction and parasites have significant impacts on marine animal populations globally. This study aimed to investigate the associative effects of host reproduction and a host–parasite interplay on a marine bivalve, along a geographic gradient of latitude. Cockles Cerastoderma edule were sampled from five European sites (54°N to 40°N), between April 2018 and October 2019. A histological survey provided data on trematode (metacercaria and sporocyst life stages), prevalence, and cockle stage of gametogenesis to assess the influence of a latitudinal gradient on both interplays. Sex ratios at the northernmost sites were skewed toward females, and spawning size was reduced at the lower latitudes. Trematode infection did not follow a latitudinal gradient....
Tipo: Text
Palavras-chave: Boom and bust; Cockles; Fisheries; Latitude; Parasite–host interactions; Reproduction; Shellfish; Spatial variation; Trematodes.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00691/80352/83454.pdf

Saisonnalité de ponte de Crassostrea gigas et Crassostrea angulata dans le bassin de Marennes-Oléron. Un demi siècle de résultats : 1950-2000. La différence dans la saison de ponte reflète-t-elle une différence entre taxons ou l'évolution climatique ?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick.
The Marennes-Oléron Bay on the Atlantic coast is a major oyster culture centre in France. 40 000 tonnes of cupped oysters are produced there each year. The two taxa C. angulata and C. gigas have been cultured in turn over the last century. Since 1950, larvae have been captured between June and September in the southern part of the Bay, near the mouth of the Seudre River, the traditional oyster spat capture zone. This historical database shows that the frequency of larvae capture is defined by three to four peaks in larvae emission in C. angulata and only two peaks for C. gigas during a single season. Seventeen years of data on C. angulata between 1950 and 1969 and 27 years for C. gigas between 1972 and 2000 demonstrate that the beginning of the spawning...
Tipo: Text
Palavras-chave: Crassostrea angulata; Crassostrea gigas; Marennes Oléron bassin; Pertuis Charentais; Environnement; Huître creuse; Reproduction.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2008/rapport-4126.pdf

Rapport annuel d'activité 1980 du Laboratoire Cultures Marines et Aménagement du Littoral de La Tremblade
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heral, Maurice.
Rapport annuel d'activité du Laboratoire Cultures Marines et Aménagement du Littoral de La Tremblade concernant l'année 1980
Tipo: Text
Palavras-chave: Conchyliculture; Production; Physiologie; Valorisation claires ostréicoles; Sélection génétique; Crassostrea gigas; Reproduction.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/00070/18108/15655.pdf

L'huître et le contrôle sanitaire ostréicole
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lambert, Louis.
Les mollusques et en particulier les huîtres ont de tout temps joué un rôle considérable dans l’alimentation humaine. Divers auteurs latins, d'autres, plus nombreux, du moyen âge, ont dit les mérites de nos huîtres indigènes qui paraient les tables les mieux servies. Pour les habitants de nos rivages les coquillages ont toujours été nourriture courante, mais la difficulté la longueur des transports ne permettaient pas de les expédier bien loin des côtes. L'exploitation des gisements naturels était la principale industrie, de nombreux auteurs disent la seule, mais à tort, car, dès le XIIIe siècle, la culture de la moule était pratiquée sur nos côtes du Centre Ouest ; un peu partout, les pêcheurs savaient installer des parcs sur les terrains baignés par la...
Tipo: Text
Palavras-chave: Ostréiculture; Huître; Anatomie; Reproduction; Historique; Etablissement Ostréicole; Contrôle sanitaire.
Ano: 1936
URL: http://archimer.ifremer.fr/doc/00003/11463/8023.pdf

Niveau de ploïdie des huîtres des bassins de captage de Marennes Oléron et Arcachon (Campagne biovigilance 2007)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Benabdelmouna, Abdellah; Grouhel, Stephanie; Cantin, Christian; Grizon, James; Seugnet, Jean-luc.
The monitoring of spat ploidy collected in the two main collection basins-Marennes Oléron and Arcachon-was realised through flow cytometry. Natural spat samples were collected on 3 sites in each basin and a total of 1 002 animals were analysed. Based on our samples, the results concluded that no polyploid, triploid or tetraploid animals were collected in the two investigated basins. These results comply with our provisions and do not bring any reason for a change in the practices used in triploid oyster culture. However, complementary studies on triploid residual gametogenesis, the nature of their gametes and that of their offsprings will have to be continued in order to fine-tune the estimates of the parameters on which the modeling scenarii of the...
Tipo: Text
Palavras-chave: Reproduction; Captage; Arcachon; Marennes Oléron; Génétique; Crassotrea gigas; Huîtres; Naissain; Ploïde.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/rapport-3905.pdf

Projet GERMON. Structure génétique et migration du thon Germon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Nikolic, Natacha; Puech, Alexis; Chouvelon, Tiphaine; Munschy, Catherine; Bodin, Nathalie; Brach-papa, Christophe; Potier, Michel; West, Wendy; Knoery, Joel; Zudaire, Iker; Dhurmeea, Zahirah; Degroote, Maxime; Cedras, Maria; Evano, Hugues; Bourjea, Jerome.
The GERMON project had several aims i) to understand the populations’ structure between albacore tuna southwest of the Indian Ocean and southeast Atlantic, ii) to determine the origin of juveniles observed in South Africa iii) to improve the understanding of the biology field (Size/Size and Size/Weight; reproduction and feeding area; trophic linkages) and iv) to initiate work on chemical analyzes and adaptation of the albacore species to its environment. These aims have been held and the results allow a better understanding of the management albacore. A general summary of results is presented in Part 9.
Tipo: Text
Palavras-chave: Germon; Thunnus alalunga; Génétique; Stock; Structure; Connectivité; Chimie; Reproduction; Alimentation; Habitat; Albacore; Thunnus alalunga; Genetic; Stock; Structure; Connectivity; Chemical; Reproduction; Feeding behavior; Habitat.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00293/40461/39152.pdf

Study of the antioxidant capacity in gills of the Pacific oyster Crassostrea gigas in link with its reproductive investment
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Beguel, Jean-philippe; Huvet, Arnaud; Quillien, Virgile; Lambert, Christophe; Fabioux, Caroline.
Energy allocation principle is a core element of life-history theory in which "the cost of reproduction" corresponds to an acceleration of senescence caused by an increase in reproductive investment. In the "theory of aging", senescence is mainly due to the degradation of lipids, proteins and DNA by reactive oxygen species (ROS), by-products of oxidative metabolism. Some studies have shown that oxidative stress susceptibility could be a cost of reproduction. The present study investigates the effect of reproductive investment on antioxidant capacity in the gills of a species with a very high reproductive investment, the Pacific oyster Crassostrea gigas. We used RNA interference targeting the oyster vasa-like gene (Oyvlg) to produce oysters with contrasted...
Tipo: Text
Palavras-chave: Antioxidant capacity; Crassostrea gigas; Reproduction; RNA interference; ROS.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00116/22744/21494.pdf

Reproductive dynamics of swordfish (Xiphias gladius) in the southwestern Indian Ocean (Reunion Island). Part 1: oocyte development, sexual maturity and spawning
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Poisson, Francois; Fauvel, Christian.
The reproductive dynamics of swordfish (Xiphias gladius) was investigated from catches of the Reunion Island-based longline swordfish fishery between 19-25 degrees S and 48-54 degrees E. Thus, 1727 swordfish (size range 75-289 cm, lower jaw-to-fork length, LJFL) were sampled on board commercial fishing vessels during the period of May 1998 to January 2001. Reproductive activity was assessed using macroscopic gonad characteristics, trends of gonadal indexes for both sexes, oocyte size-frequency distributions and microscopic investigation of oocyte development stages. Size at first maturity (L-50) for female and male swordfish was estimated in Indian Ocean for the first time. L50 was estimated at 170 cm and 120 cm (LJFL) for females and males, respectively....
Tipo: Text
Palavras-chave: Indian Ocean; Xiphias gladius; Swordfish; Seasonal distribution; Size at first maturity; Histology; Spawning season; Sex ratio; Reproduction.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6353.pdf

Interannual Variation in the Population Dynamics of Juveniles of the Deep-Sea Crab Chionoecetes tanneri
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Chauvet, Pauline; Metaxas, Anna; Matabos, Marjolaine.
Understanding the population dynamics of commercially fished deep-sea species, on seasonal to inter-annual scales, is of great importance in areas where fishing pressure is high. The remoteness of the deep-sea environment constitutes a challenge for monitoring these populations. The few studies that have investigated population structure of deep-sea species, have used trawls, a destructive approach for benthic ecosystems. The development of deep-sea observatories offers a continuous long-term presence on the seafloor. Using imagery from the Ocean Network Canada deep-sea observatory, video footage was acquired on a daily basis and analyzed to describe the population dynamics of the deep-sea crab Chionoecetes tanneri located in depths of 900–1000 m in...
Tipo: Text
Palavras-chave: Marine imagery; Deep-sea observatory; Ocean Network Canada; Oxygen minimum zone; Tanner crab; Reproduction; Temporal trends; British Columbia.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00481/59314/62069.pdf

Rapport sur l'activité du laboratoire de La Tremblade - Année 1964
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport d'activité du Laboratoire ISTPM (Institut Scientifique et Technique des Pêches Maritimes) de La Tremblade
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Ostrea edulis; Crassostrea angulata; Mytilus edulis.
Ano: 1964
URL: http://archimer.ifremer.fr/doc/00069/18046/15588.pdf

Biologie et peche du capitaine Lethrinus enigmaticus (Smith) 1959 du banc de Saya de Malha (Ocean Indien)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lebeau, A; Cueff, J.-c.
I.S.T.P.M. lab of La Reunion (Indian Ocean) studies L. enigmaticus, its taxonomy, morphology, ecology, biology, feeding, reproduction and growth, and its fishing in the La Reunion and Mauritius Islands area.
Tipo: Text
Palavras-chave: Lethrinus; Lethrinus nebulosus; Lethrinus borbonicus; Lethrinus caeruleus; Lethrinella xanthocheilus; Lethrinella variegatus; Lethrinus enigmaticus; Fishing; Fishing effort; Growth; Reproduction; Feeding behaviour; Feeding; Organism morphology; Taxonomy; Marine ecology.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2030.pdf

Suivi de la reproduction de la moule (Mytilus edulis) et de l'huître creuse (Crassostrea gigas) dans le bassin de Marennes Oléron saison 2002
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ducrou, John; Arnaud, Christophe.
The Charente coast has, from its northern to its southern boundary, a number of natural cupped oyster (Crassostrea gigas) collection areas interesting professionals who wish to renew their stocks. This study carried out on behalf of the oyster culture professionals and in the framework of the Ifremer/SRC contract, is entitled "Ifremer's action for the Regional Shellfish Culture Section of the Marennes-Oléron basin". It has three purposes: - Spotting larval emissions, - Monitoring the future of the larval colonies, - Enabling the providing of information to oyster professionals early enough for them to set up their collection devices. In 2002, mussel "Mytilus edulis" larvae have been collected at the "Boyard" point.
Tipo: Text
Palavras-chave: Marennes Oléron; Larves; Captage; Mytilus edulis; Moules; Crassostrea gigas; Huîtres; Reproduction.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-6573.PDF

Biofouling development and its effect on growth and reproduction of the farmed pearl oyster Pinctada margaritifera
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lacoste, Elise; Le Moullac, Gilles; Levy, Peva; Gueguen, Yannick; Gaertner-mazouni, Nabila.
In bivalve aquaculture, dominant fouling organisms are filter feeders which can compete for food with reared bivalves, sometimes causing mortality or reducing their growth rate. This study investigated the effect of biofouling on the farmed pearl oyster Pinctada margaritifera in two lagoons of French Polynesia. Survival, growth and reproduction of 2 year-old pearl oysters were monitored with regular sampling schedules, from the initial stage of colonization up to 20 months of biofouling accumulation. Control groups of pearl oysters were kept free of biofouling as is the current practice in pearl farms. After more than a year of monitoring, no significant difference was recorded in shell growth rate between pearl oysters reared with epibionts and the...
Tipo: Text
Palavras-chave: Pearl oyster culture; Pinctada margaritifera; Biofouling; Growth; Reproduction.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00201/31188/29587.pdf

Nutrition and reproduction are key parameters in the interaction process leading to Crassostrea gigas oyster summer mortality in France
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Samain, Jean-francois; Degremont, Lionel; Soletchnik, Patrick; Ropert, Michel; Bedier, Edouard; Mazurie, Joseph; Mazurie, Joseph; Martin, Jean-louis; Moal, Jeanne; Mathieu, Michel; Pouvreau, Stephane; Lambert, Christophe; Escoubas, Jean-michel; Nicolas, Jean-louis; Le Roux, Frédérique; Renault, Tristan; Burgeot, Thierry; Bacher, Cedric; Boudry, Pierre.
Complex interactions between oyster, environment and pathogens were observed during the MOREST (2001-2005) project on summer mortality events of Crassostrea gigas oysters in France. The talk will show how nutrition level increasing reproductive intensity generates a risk for pathogen infection under synergistic effect of temperature and stress. Moreover, a genetic component is associated to specific reproductive performances and spawning behaviour. To better understand origin of such resistance or susceptibility to summer mortality, other characteristics as stress susceptibility, energy management and hemocyte activities of oysters from the two phenotypes were compared. This first comparison suggests interactions between stress, reproduction and defence...
Tipo: Text
Palavras-chave: Genetic; Pathologie; Mortality; Crassostrea gigas; Pacific oyster; Reproduction; Nutrition; Physilogy.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/acte-3467.pdf

Observations préliminaires sur la reproduction des huîtres dans le bassin de Marennes-Oléron en 1971
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gras, Paul; Comps, Michel; David, A.; Baron, G.
During the summer of 1970 mortality started in the Marennes-Oléron Basin which affected successively adult oysters, 18 year-old oysters and then the oyster spats collected the same year. Only the Portuguese oyster (Crassostrea angulata) was dying whereas the Pacific oyster (Crassostrea gigas) showed total resistance. The abnormal fixation of the 1970 spats, followed by an important mortality in this latter, and the large decrease of adult oyster stocks, and therefore of genitors, were also a reason for oyster farmers to worry as the new reproduction season was about to start. Some measures had to be taken in order to compensate for the lack of genitors susceptible of producing a tough and vivacious spat. The good results obtained for a few years with C....
Tipo: Text
Palavras-chave: Naissain; Larves; Marennnes Oléron; Crassostrea gigas; Reproduction.
Ano: 1971
URL: http://archimer.ifremer.fr/doc/1971/publication-6446.PDF

Oyster reproduction is affected by exposure to polystyrene microplastics
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Sussarellu, Rossana; Suquet, Marc; Thomas, Yoann; Lambert, Christophe; Fabioux, Caroline; Pernet, Marie Eve Julie; Le Goic, Nelly; Quillien, Virgile; Mingant, Christian; Epelboin, Yanouk; Corporeau, Charlotte; Guyomarch, Julien; Robbens, Johan; Paul-pont, Ika; Soudant, Philippe; Huvet, Arnaud.
Plastics are persistent synthetic polymers that accumulate as waste in the marine environment. Microplastic (MP) particles are derived from the breakdown of larger debris or can enter the environment as microscopic fragments. Because filter-feeder organisms ingest MP while feeding, they are likely to be impacted by MP pollution. To assess the impact of polystyrene microspheres (micro-PS) on the physiology of the Pacific oyster, adult oysters were experimentally exposed to virgin micro-PS (2 and 6 µm in diameter; 0.023 mg·L−1) for 2 mo during a reproductive cycle. Effects were investigated on ecophysiological parameters; cellular, transcriptomic, and proteomic responses; fecundity; and offspring development. Oysters preferentially ingested the 6-µm micro-PS...
Tipo: Text
Palavras-chave: Microplastic; Reproduction; Energy allocation; Oyster.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00311/42233/41600.pdf

Compte rendu sur la reproduction des huîtres et des moules dans le bassin de Marennes Oléron pour l'année 1985
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ratiskol, Jacqueline; Heurtebise, Serge.
Au cours de l'année 1985, le laboratoire CSRU de La Tremblade a pris en charge le suivi de la reproduction des larves d'huîtres et de moules dans le bassin de Marennes Oléron. Les différents points sont choisis en fonction de critères tels que la proximité des bancs géniteurs (gisements naturels d'huîtres ou de moules) et des zones traditionnelles de reproduction des huîtres : Les Doux et Mérignac pour le bassin, Faulx, Coux et Les Roches pour la Seudre, Les Palles et La mouclière pour la Charente.
Tipo: Text
Palavras-chave: Reproduction; Larves; Crassostrea gigas; Mytilus edulis; Bassin de Marennes Oléron.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/00049/16073/13534.pdf

Observations sur la reproduction des huîtres dans la Seudre (Bassin de Marennes-Oléron) en 1972
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Borgne, Annick; Gras, Paul; Comps, Michel; Razet, Daniel.
Après la mortalité massive de 19701-71 qui entraîna la quasi-disparition de l'huître portugaise (Crassostrea angulata), on assite depuis trois ans à l'extension de la culture de l'huître du Pacifique (Crassostrea gigas) dans le bassin de Marennes-Oléron. Cette espèces introduite en fait depuis 1966 montra durant la période de mortalité massive une vigueur et une résistance exceptionnelles, comparativement à l'huître portugaise.
Tipo: Text
Palavras-chave: Ostréiculture; Huître; Crassostrea gigas; Reproduction; Bassin Marennes Oléron; Charente-Maritime.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/00009/12006/8698.pdf

Early gametogenesis in the Pacific oyster: new insights using stem cell and mitotic markers
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cavelier, Patricia; Cau, Julien; Morin, Nathalie; Delsert, Claude.
While our knowledge of bivalve gametogenesis has progressed in recent times, more molecular markers are needed in order to develop tissue imaging. Here, we identified stem cell and mitotic markers to further characterize oyster early gametogenesis, mainly through immunofluorescence microscopy. Intense alkaline phosphatase activity, a non-specific marker for stem cells, was detected on the outer edge of the gonad ducts at the post-spawning stage, suggesting an abundance of undifferentiated cells very early during the sexual cycle. This observation was confirmed using an antibody against Sox2, a transcription factor specific for stem or germline cells, which labeled cells in the gonad duct inner mass and ciliated epithelium early during the initial oyster...
Tipo: Text
Palavras-chave: Germline cells; Cell cycle; Reproduction; Bivalve; Marine invertebrates.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00409/52100/52809.pdf

Contribution à l'étude de la biologie et de la pêche du rouget-barbet (Mullus surmuletus) dans le Golfe de Gascogne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Tous, Philippe.
The growth study of s tripped Mullet, from the Bay of Biscaye, from April to June is managed by scale reading. Sorne difficulties appear with the interpretation female scales. The Analysis of ovaries confirms that spring is the period of reproduction, and shows that the age of first reproduction is two year (65 %) or one year old (35 %). Secondly, the exploitation of various statistic data shows the evolution of landings of Stripped Mullet in several harbours, and especially in les Sables d'Olonne, since 1962.  The reconstitution of the artisan trowlers effort in this harbour confirms the long decline of c.p.u.e . for Mullus surmuletus, and a rapid increase since 1981. The problem of the lack of data about the inshore fishery and about the composition of...
Tipo: Text
Palavras-chave: Reproduction; Croissance; Golfe de Gascogne; Chalutiers artisans et côtiers; CPUE.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/00455/56649/58390.pdf

Suivi de la reproduction des huîtres - Saison 1997
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Faury, Nicole.
Le suivi de la reproduction des huîtres s'est déroulé du 23 juin au 3 septembre 1997. Cette année, six points du bassin de Marennes-Oléron était concernés contre quatre l'an dernier : En Charente : La Mouclière et Les Palles. Au centre du Bassin : Les Doux et Mérignac. En Seudre: Coux et les Faulx; Cette opération est contractualisée avec la Section Régionale de Marennes-Oléron
Tipo: Text
Palavras-chave: Reproduction; Captage; Naissain; Crassostrea gigas; Marennes Oléron.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00072/18289/15861.pdf

CAPRETAR : Etude comparative des caractéristiques cytogénétiques et des performances de survie de naissains sauvages issus du CAPtage PREcoce ou TARdif
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Benabdelmouna, Abdellah; Hemissi, Issam; Bodin, Stephane; Robert, Stephane; Ledu, Christophe; Laporte, Philippe.
L'action de recherche CAPRETAR (CAptage PREcoce ou TARdif: 2009-2010) a été réalisée dans le cadre du Contrat de Plan Etat Région - Poitou Charentes (CPER-PC 2007- 2013) développement durable des Pertuis Charentais. Cette action, s 'inscrit dans le cadre d 'un lien direct qui existerait entre la nature précoce/tardive d 'un captage naturel et la qualité des naissains de l'huître creuse C. gigas qui en sont issus (qualité génétique : « R » résistante ou « S » sensible et qualité génomique : taux des aneuploïdies et des dommages à l'ADN). L'objectif de cette action vise à estimer durant l 'année (2010) les performances relatives de survie de naissains issus d 'un captage précoce ou tardif réalisé l'année précédente (2009). Les résultats escomptés visent à...
Tipo: Text
Palavras-chave: Génétique; Cytogénétique; Captage; Reproduction; Huîtres creuses; Crassostrea gigas.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00062/17283/14794.pdf

The poor health of deep-water species in the context of fishing activity and a warming climate: will populations of     Molva     species rebuild or collapse?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lloret, Josep; Serrat, Alba; Þórðarson, Guðmundur; Helle, Kristin; Jadaud, Angelique; Bruno, Isabel; Ordines, Francesc; Sartor, Paolo; Carbonara, Pierluigi; Rätz, Hans-joachim.
Many deep‐water fish populations, being k‐selected species, have little resilience to overexploitation and may be at serious risk of depletion as a consequence. Sea warming represents an additional threat. In this study, the condition, or health, of several populations of common ling (Molva molva), blue ling (M. dypterygia) and Mediterranean or Spanish ling (M. macrophthalma) inhabiting different areas in the North Atlantic and the Mediterranean was evaluated, in order to shed light on the challenges these deep water species are facing in the context of fishing activity and a warming climate. The data on the condition of Molva populations which we analyze here has been complemented with data on abundance and, for the southernmost species (Mediterranean...
Tipo: Text
Palavras-chave: Condition; Parasitism; Reproduction; Deep‐water fish; Fisheries; Sea warming.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00623/73502/72808.pdf

Notes on the biology of the bigeye scad, Selar crumenophthalmus (Carangidae) around Reunion Island, southwest Indian Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Roos, David; Roux, Olivier; Conand, François.
The main characteristics of the biology of bigeye scad were studied from commercial fishery catches around Reunion Island. Biometric relationships were calculated. The monitoring of size distribution, aggregated by month, allowed us to estimate the theoretical growth equation using the ELEFAN software. The von Bertalanffy growth parameters were adjusted with a seasonal modulation: L8 = 265 mm; K = 1.64 year-1; c = 0.068; ? = 0.38. The growth of the cohort was quite high during the austral summer (November-April) and decreased during the austral winter (May-October). The arrival of a new cohort with homogeneous small sizes (65 to 90 mm) in the fishery in November coincided with the disappearance of large individuals. A feature of the reproductive biology...
Tipo: Text
Palavras-chave: Indian Ocean; Reunion Island; Growth; Reproduction; Selar crumenophthalmus; Carangidae.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2335.pdf

Rapport d'activité année 1979 du Laboratoire de Biologie Conchylicole de La Rochelle
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dardignac, Marie-jose.
Rapport d'activité du Laboratoire de Biologie Conchylicole de La Rochelle concernant l'année 1979
Tipo: Text
Palavras-chave: Conchyliculture; Mytiliculture; Croissance; Vasières; Claires ostréicoles; Reproduction; Pertuis Breton; Mytilus edulis.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00070/18089/15637.pdf

Reproductive behaviour of two tilapia species ( Oreochromis niloticus , Linné, 1758; Sarotherodon melanotheron, Rüppel, 1852) in freshwater intra and interspecific pairing context
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Akian, Dieudonne; Yao, Kouakou; Clota, Frederic; Lozano, Paul; Baroiller, Jean Francois; Chatain, Beatrice; Begout, Marie-laure.
Nile tilapia Oreochromis niloticus (NT) and Black-chinned tilapia Sarotherodon melanotheron (BCT) are respectively characterized by fast growth and water salinity tolerance which attract the farmers who could take advantage of both species characteristics by producing hybrids reared in brackish or marine waters. Little information is however available about social interactions between the two species which are distinct by their mode of parental care (oral incubation). The objective of this study was to determine the behaviour of the two species, NT and BCT placed in freshwater intraspecific and interspecific pairing contexts. Females of both species (n = 20 per species) were first isolated for 90 days in a 60 L aquarium to determine the average duration...
Tipo: Text
Palavras-chave: Aggression; Hybridization; Reproduction; Oreochromis niloticus; Sarotherodon melanotheron; Freshwater.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00376/48673/49008.pdf

Analyse des ressources et des caractéristiques individuelles du stock d'oursin Paracentrotus lividus (Lamarck, 1816) du territoire 64
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: De Casamajor, Marie-noelle; Mahias, Jeremy; Bru, Noelle; Caill-milly, Nathalie.
A spatial sampling was carried out for stock assessment of sea urchin P. lividus throughout the Basque coast. A sampling, over the year, was conducted to study the reproductive cycle. This work took place over 2013 and 2014. Reproduction occurs once in spring, between May and August 2014. Among factors affecting the release of eggs, salinity, temperature and hydrodynamics show a significant inter-annual variability in the Basque coast. Thus, the period set in 2014, may fluctuate between years. For the stock, the results showed that 11.85 (+/-0.32) million individuals of harvestable biomass for 724 tones (+/- 137). Stock is spread over the entire surveyed area density and biomass decrease rapidly with depth, individuals are mainly located between 0 and 5 m....
Tipo: Text
Palavras-chave: Oursin commun; Stock; Biomasse; Reproduction; Côte basque; Conditions environnementales; Sea urchin; Stock; Biomass; Reproduction; Basque coast; Environmental conditions.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00218/32889/31373.pdf

Long-term food-exposure of zebrafish to PCB mixtures mimicking some environmental situations induces ovary pathology and impairs reproduction ability
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Daouk, Tarek; Larcher, Thibaut; Roupsard, Francois; Lyphout, Laura; Rigaud, Cyril; Ledevin, Mireille; Loizeau, Veronique; Cousin, Xavier.
Although the use of polychlorinated biphenyls (PCBs) has been banned for several decades, they are still present in the environment and are occasionally mechanically released from sediment or transferred through the trophic chain. Field analyses have established correlations between exposure to PCBs and alterations in fish physiology including reproductive function. Experimental exposures have been mainly performed using dioxin-like PCBs or other congeners at very high concentrations. However, these studies are often difficult to relate to real-life conditions. In the present study, we performed a life-cycle exposure using zebrafish model and mixtures representative of some environmental situations in terms of doses, composition and containing mainly non...
Tipo: Text
Palavras-chave: Zebrafish; PCBs; Chronic exposure; Physiology; Reproduction; Atresia.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00059/17038/14608.pdf

Niveau de ploïdie des naissains d'huître creuse captés dans les bassins de Marennes Oléron et d'Arcachon. Réseau Biovigilance, campagne 2010
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Benabdelmouna, Abdellah; Guyader, Tanguy; D'Amico, Florence; Cantin, Christian; Grizon, James; Seugnet, Jean-luc.
Le réseau biovigilance a réalisé en 2010 la caractérisation du niveau de ploïdie des naissains captés en 2009 dans les deux principaux bassins de captage que sont Marennes Oléron et Arcachon. Les échantillons des naissains sauvages issus du captage naturel ont été prélevés sur 4 sites dans chaque bassin et pour un total analysé de 1379 animaux. En tenant compte de notre échantillonnage, nos résultats de suivi de ploïdie concluent à l'absence d 'animaux polyploïdes, triploïdes ou tétraploïdes, captés dans les deux bassins prospectés. Cependant, les deux bassins de captage prospectés sont caractérisés par la présence de naissains affectés de diverses anomalies génomiques: cassures d 'ADN et Aneuploïdie (hypodiploïdie) ADN c à d une diminution de la taille du...
Tipo: Text
Palavras-chave: Génétique; Reproduction; Captage; Ploïdie; Anomalie génomique; Aneuploïdie.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00070/18124/15677.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1959
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1959
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1959
URL: http://archimer.ifremer.fr/doc/00069/18072/15616.pdf

Influence of tank volume on vitellogenesis and spawning performances in sea bass Dicentrarchus labrax L.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Buchet, Vincent; Coquard, Elodie; Severe, Armelle; Barone, Herve.
Sea bass, Dicentrarchus labrax (mean weight: 748 +/- 13 g), were maintained before and during vitellogenesis in 1, 3, 8, 16 and 32 m(3) tanks, and then they were transferred to 2 m(3) tanks, for the spawning season. During the first 2 months of the experiment, the growth rates were significantly lower in smaller tanks (1 m(3)). In August, the oocyte diameters were significantly lower in smaller tanks (1, 3 and 8 m(3)) than in larger (16-32 m(3)) tanks. At the end of the experiment, the fish mean weight in the 1 m(3) tanks was significantly lower than in the 3 m(3) tanks, but oocyte diameters and plasma oestradiol concentrations were not significantly different between the volumes. This shows a longer acclimation requirement in smaller volume rearing....
Tipo: Text
Palavras-chave: Volume; Aquaculture; Vitellogenesis; Reproduction; Sea bass.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4068.pdf

La reproduction de l'Ormeau Haliotis tuberculata L.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Girard, Annie.
In order to improve the regulation of abalone 'fishing' and to provide for the restocking of supplies, more details of the reproductive cycle were sought. Attention is given to gonad morphology, acquisition of sexual maturity, juvenile hermaphroditism, gonad histogenesis and histology of gametogenesis, annual cycle of gamete emission, and the relation between size and fertility. Results are presented in graphs, histograms, diagrams and photographs. It was found that female reached sexual maturity during the 3rd year, at 38-54 mm, male during year 2 at 25-40 mm; there was successive juvenile hermaphroditism; an active period from mid-June to mid-November was indicated by the volumentric index of maturity; water temperature was associated with the...
Tipo: Text
Palavras-chave: Ormeau; Cycle; Temperature; Haliotis tuberculata L.; Reproduction.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2062.pdf

Suivi de la reproduction des huîtres - Saison 1996
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Faury, Nicole.
Contrairement aux années précédentes, le suivi de la reproduction des huîtres s'est effectué cette année sur un nombre de points limités. A la demande de la Section Régionale de Marennes Oléron qui finance cette opération, des lieux de pêches ont été supprimés en Seudre (Coux et les Roches) et dans le Bassin (Mérignac). Selon les termes du contrat, le suivi s'est opéré du 1er juillet au 31 août.
Tipo: Text
Palavras-chave: Reproduction; Captage; Naissain; Crassostrea gigas; Marennes Oléron.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00072/18288/15860.pdf

Establishment and population features of the non-native Atlantic rangia, Rangia cuneata (Mollusca: Bivalvia), in northwestern France
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Faillettaz, Robin; Roger, Christophe; Mathieu, Michel; Robin, Jean-paul; Costil, Katherine.
The presence of shells of the Atlantic rangia, Rangia cuneata, a brackish-water species native from the Gulf of Mexico also known as gulf wedge clam, was reported in 2017 on the French coasts of the English Channel, in the waterway that connects Caen to the sea. However, no information was available on whether a population of this alien species had successfully established in the region. Here, only empty shells—except for one live individual—were sampled in that waterway, and the sampling was shifted to the nearby marina of Ouistreham, where water is mesohaline (6.89 ± SD 0.06 PSU). In spring 2017, the mean density in the marina reached 110.45 ± 86.08 ind m-2, largely dominating the benthos community. The population was mostly composed of fairly large...
Tipo: Text
Palavras-chave: The Atlantic rangia; Alien species; Normandy (F); Brackish waters; Density; Growth; Reproduction.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00634/74623/74515.pdf

Collecte de naissain de pectinidés en Bretagne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Buestel, Dominique; Dao, Jean-claude; Lemarie, Gilles.
Since 1973 some pectinides spat collection experiments have been conducted by the Fishery team of the Brittany Oceanology Centre, on two deposits exploited by commercial fishing: the roadsted of Brest and especially the St-Brieuc Bay The experiment carried out in 1973 was the first French attempt on this group of species and the results have been very encouraging: although the technology used was rudimentary, the best collectors enabled the collection of 30 to 50 king scallops (Pecten maximus) each and of 6,000 to 8,000 scallops (Chlamys varia and Chlamys opercularis). The research protocol used enabled the determination of the sequential aspect of the fixation, and of the growth speed of the young animals. In addition, the difference between both deposits...
Tipo: Text
Palavras-chave: Collecteur; Bretagne; Coquilles Saint Jacques; Pecten maximus; Reproduction; Naissain.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/acte-6542.pdf

Déterminisme du recrutement : données préliminaires sur le développement et la survie larvaire de Crassostrea gigas
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard.
Hormis les facteurs anthropiques (voir références bibliographiques HIS et al .), l es facteurs nutritionnels jouent un rôle prépondérant dans le déroulement de la vie pélagique des larves de bivalves ; un déficit nutritionnel peut, à lui seul, hypothéquer les chances de captage (PERSOONE et al, 1980; HIS et ROBERT, 1985). Or les données dont nous disposons ont été presque exclusivement obtenues en milieu expérimental (voir synthèse de LUCAS, 1982); il n 'est pas certain qu'elles puissent être extrapolées au milieu naturel. Site exceptionnel en ce qui concerne la reproduction des huîtres, le bassin d'Arcachon permet l'isolement de véligères du milieu naturel, aux différents stades de la vie pélagique; émissions massives, faible charge en tripton favorisent...
Tipo: Text
Palavras-chave: Reproduction; Larves; Véligères; Huîtres creuses; Crassostrea ggias.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/00050/16157/13640.pdf

Molecular cloning and seasonal expression of oyster glycogen phosphorylase and glycogen synthase genes
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bacca, Helene; Huvet, Arnaud; Fabioux, Caroline; Daniel, Jean-yves; Delaporte, Maryse; Pouvreau, Stephane; Van Wormhoudt, A; Moal, Jeanne.
To investigate the control at the mRNA level of glycogen metabolism in the cupped oyster Crassostrea gigas, we report in the present paper the cloning and characterization of glycogen phosphorylase and synthase cDNAs (Cg-GPH and Cg-GYS, respectively, transcripts of main enzymes for glycogen use and storage), and their first expression profiles depending on oyster tissues and seasons. A strong expression of both genes was observed in the labial palps and the gonad in accordance with specific cells located in both tissues and ability to store glucose. Cg-GPH expression was also found mainly in muscle suggesting ability to use glycogen as readily available glucose to. supply its activity. For seasonal examinations, expression of Cg-GYS and Cg-GPH genes...
Tipo: Text
Palavras-chave: Reproduction; Regulation; Oyster; Glycogen; Expression; Gene; Energy; Crassostrea gigas; Bivalve.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-435.pdf

Sur la fixation des larves d'Ostrea edulis en présence de Pleurobrachia et de Noctiluca
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Marteil, Louis.
De nombreux auteurs ont signalé, après Kincaid (1915) et Dodgson (1922) que Pleurobrachia et Noctiluca peuvent être considérés comme des prédateurs des larves pélagiques d'O. edulis dont ils contribueraient à diminuer rapidement le nombre en s'en nourrissant.
Tipo: Text
Palavras-chave: Reproduction; Larves; Ostrea edulis; Prédateur; Pleurobrachia; Noctiluca.
Ano: 1964
URL: http://archimer.ifremer.fr/doc/00005/11581/8206.pdf

Temperature and seston quantity and quality effects on field reproduction of farmed oysters, Crassostrea gigas, in Bourgneuf Bay, France
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dutertre, Mickael; Beninger, Peter G.; Barille, Laurent; Papin, Mathias; Rosa, Philippe; Barille, Anne-laure; Haure, Joel.
The proliferation of the voluntarily-introduced cupped oyster, Crassostrea gigas, has attained the proportions of species invasion in many intertidal habitats in Europe, presumably resulting from successful reproduction of farmed individuals. It is thus imperative to better understand the reproductive characteristics of farmed oysters, since they are directly under human control. We quantified the dry tissue mass (DTM), gametosomatic index (GSI), and reproductive cycle of farmed oysters at two sites in Bourgneuf Bay, France, in relation to environmental parameters using continuously-recording probes in 2005 and 2006. The GSI was developed for this study, based on the actual area occupied by gametes, rather than the area of the gonad previously used for...
Tipo: Text
Palavras-chave: Atlantic Ocean; Crassostrea gigas; Oyster farming; Bivalve; Gametosomatic index; Biological invasion; Atresia; Oocytes; Turbidity; Temperature; Reproduction.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6871.pdf

Exploration fonctionnelle de gènes différentiellement exprimés entre les souches d'huîtres creuses Crassostrea gigas résistantes et sensibles à la mortalité estivale
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Fleury, Elodie.
This work contributed to the development of specific genomic tools for the Pacific oyster Crassostrea gigas, aiming to identify molecular markers associated with summer survival of this species. To do so, 29745 ESTs obtained from different sequencing programs were grouped in a unique database. 9058 unigenes have been used to produce a cDNA microarray, to compare lines selected to be Resistant (R) or Sensitive (S) to summer mortality. 34 genes were observed as differentially expressed before the mortality event. Most of these genes are associated with reproduction and oxidative stress. This underlines the implication of the cost of reproduction and the importance of oxidative stress defenses in development of an immune weakness before the mortality event....
Tipo: Text
Palavras-chave: Reproduction; Transforming Growth Factor b; Micorarray; Database; Summer mortality; Bivalves; Reproduction; Transforming Growth Factor b; Puce à ADN; Base de données; Mortalité estivale; Bivalves.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/these-6462.pdf

Etude du secteur de Marennes-Oléron (partie sud du bassin charentais) : suivi de la reproduction de l'huître creuse Crassostrea gigas en 1999. Bilan de trois années d'observation de 1997 à 1999
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Faury, Nicole; Bouquet, Jean-paul.
The Marennes-Oléron is a well known cupped oyster (Crassostrea gigas) and mussel (Mytilus edulis) reproduction area. Every year, a monitoring of the reproduction of these two species is carried out on behalf of the Regional Shellfish Culture Section of Marennes-Oléron. This monitoring aims to determine the periods of larval emission in order to let the professionals know about the best collection times This study presents the main results obtained in 1999 and compares them with those obtained in 1997 and 1998. The year 1999 showed good results as far as larval emission and development are concerned in both oysters and mussels. The comparison of the three consecutive years shows the disparity of larval evolutions.
Tipo: Text
Palavras-chave: Marennes Oléron; Captage; Larves; Mytilus edulis; Moules; Crassostrea gigas; Huîtres; Reproduction.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-6571.pdf

Contrôle de la gamétogénèse des huîtres creuses et plates. Relations "reproduction" et "génétique"
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gerard, Andre; Naciri-graven, Yamama; Boudry, Pierre; Launey, Sophie; Heurtebise, Serge; Ledu, Christophe; Phelipot, Pascal.
At the end of the 1980s, after two decades of aquaculture research in molluscs, Ifremer initiated its first genetic studies. These new studies quickly revealed the limits of knowledge in aquaculture, particularly in terms of controlling oyster reproduction. This presentation attempts to summarize the available information on genetics in aquaculture. In particular, breeding practices in the 1980s involved populations of broodstock, while genetics requires modern techniques where individuals, not just populations, can be identified. Controlling reproduction at the individual level in oysters raises new questions that existing protocols cannot address, especially in terms of controlling sex determination, individual maturity, spawning synchrony, chemical...
Tipo: Text
Palavras-chave: Gamètes; Fécondation; Induction ponte; Reproducteur; Conditionnement; Gamétogénèse; Génétique; Reproduction; Crassostrea gigas; Huîtres.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/1995/acte-3210.pdf

Lipid composition of the pacific lion-paw scallop, Nodipecten subnodosus, in relation to gametogenesis - 2. Lipid classes and sterols
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Palacios, Elena; Racotta, I.s.; Arjona, O; Marty, Y; Le Coz, Jean-rene; Moal, Jeanne; Samain, Jean-francois.
Knowledge on the energy distribution during the reproductive cycle of the giant lion-paw scallop, Nodipecten subnodosus is limited, but necessary for aquaculture purposes. In a previous work, we found that natural food availability can sustain the full cost of gametogenesis in optimal environmental conditions. The present study analyses the lipid and sterol classes' composition of several tissues during gametogenesis. In female gonads, the quantity of triacylglycerol (TG) increased parallel to gametogenesis from December (spawned gonads, 0.7 mg g(-1) or 7% of total lipids) to June (ripe gonads, 52 mg g(-1) or 66% of total lipids). In male gonads sampled in June, the concentration of TG (0.7 mg g(-1) or 3.5% of total lipids) and esterified sterols was...
Tipo: Text
Palavras-chave: Sterol; Reproduction; Phospholipid; Mollusks; Acylglycerides.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2635.pdf

Reproduction de l'huître creuse (Crassostra gigas) dans le Bassin de Marennes Oléron. La pêche expérimentale de larves d'huîtres, indicateurs de ponte et de recrutuement. Analyse spatio-temporelle et relation avec l'environnement
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Soletchnik, Patrick.
This study is based on catched larvae data base produced since C. gigas was first imported into the Charentais Sounds (late 1960s, early 1970s). The method for catching larvae using a towed net remained unchanged between 1950 and 1998. Four sites have been sampled in the Bay since 1970, two situated in the Seudre estuary and two in the middle of the Bay. Two other sites from near the mouth of the Charente River have been sampled since 1982. For each sample, oyster larvae were counted in four size classes, from the young larva (1-4 days) to near metamorphosis (16-20 days). Each year, 100 to 150 captures were carried out at all sample sites between June and September. Captures from July and August represent 99% of the total. The main variables were: capture...
Tipo: Text
Palavras-chave: Crassostrea gigas; Marennes Oléron Bassin; Pertuis Charentais; Analyse spatio temporelle; Recrutement; Saison; Larve; Ponte; Huîtrs; Reproduction.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2008/rapport-4125.pdf

Rapport d'activité année 1978 du Laboratoire de Biologie Conchylicole de La Rochelle
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Dardignac, Marie-jose.
Rapport d'activité du Laboratoire de Biologie Conchylicole de La Rochelle concernant l'année 1978
Tipo: Text
Palavras-chave: Conchyliculture; Sédimentologie; Croissance; Reproduction; Pertuis Breton; Crassostrea gigas.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00070/18091/15639.pdf

Etude sur la reproduction de l'huître plate Ostrea edulis dans les claires de la région de Marennes-Oléron
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Les claires situées sur les deux rives de la Seudre, sur les côtes de Marennes, du Chapus et de l'Ile d'Oléron, sont des bassins creusés dans des terrains argileux. Elles sont alimentées en eau de mer par un système de chenaux et de ruissons, leurs affluents, pour un coefficient de marée en général égal ou supérieur à 70. Dans certaines claires, les ostréiculteurs déposent, au mois de Mai, des huîtres plates originaires de Bretagne ou d'Arcachon, âgées de trois ou quatre ans, à raison de 2, 3 et 4 huîtres par mètre carré. Dans ce milieu, sous quarante centimètres d'eau, elles vont pendant six ou sept mois, croître, engraisser et verdir.
Tipo: Text
Palavras-chave: Huître plate; Ostrea edulis; Reproduction; Claires ostréicoles; Marennes Oléron; Charente-Maritime.
Ano: 1954
URL: http://archimer.ifremer.fr/doc/00004/11500/8070.pdf

Synthèse de données relatives aux numérations des larves de Crassostrea gigas dans le plancton du bassin d'Arcachon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard.
L'huître japonaise Crassostrea gigas a été introduite dans le bassin d'Arcachon à la suite de l'épizootie qui a décimé l'huître portugaise, Crassostrea angulata en 1970. L'importation de géniteurs, les "huîtres mères" (1971 et 1972) et de naissain, ont permis à l'espèce nouvellement introduite, de coloniser rapidement l'ensemble de la baie. Le présent travail a pour but de rapporter sous forme synthétique les résultats obtenus en ce qui concerne les numérations de véligères de C. gigas de 1971 à 1983 inclus.
Tipo: Text
Palavras-chave: Huître creuse; Crassostrea gigas; Reproduction; Naissain; Arcachon.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/00238/34954/33378.pdf

Bioaccumulation of persistent organic pollutants in female common dolphins (Delphinus delphis) and harbour porpoises (Phocoena phocoena) from western European seas: Geographical trends, causal factors and effects on reproduction and mortality
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pierce, G; Santos, M; Murphy, S; Learmonth, J; Zuur, A; Rogan, E; Bustamante, Paco; Caurant, Florence; Lahaye, V; Ridoux, Vincent; Zegers, B; Mets, A; Addink, M; Smeenk, C; Jauniaux, T; Law, R; Dabin, W; Lopez, A; Farre, J; Gonzalez, A; Guerra, A; Garcia Hartmann, M; Reid, R; Moffat, C; Lockyer, C; Boon, J.
Concentrations of polychlorinated biphenyls (PCBs) in blubber of female common dolphins and harbour porpoises from the Atlantic coast of Europe were frequently above the threshold at which effects on reproduction could be expected, in 40% and 47% of cases respectively. This rose to 74% for porpoises from the Southern North Sea. PCB concentrations were also high in southern North Sea fish. The average pregnancy rate recorded in porpoises (42%) in the study area was lower than in the western Atlantic but that in common dolphins (25%) was similar to that of the western Atlantic population. Porpoises that died from disease or parasitic infection had higher concentrations of persistent organic pollutants (POPs) than animals dying from other causes. Few of the...
Tipo: Text
Palavras-chave: Diet; Reproduction; Persistent organic pollutants; Delphinus delphis; Phocoena phocoena.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-7314.pdf

Une expérience de production de "naissain naturel un à un" dans le bassin d'Arcachon
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: His, Edouard.
Lors de la pénurie de naissain dans le bassin d'Arcachon en 1972, certains ostréiculteurs se sont tournés vers le naissain d'écloserie "un à un" il ne nécessite ni détroquage, ni désatroquage, la croissance plus régulière donnant aux jeunes huîtres une nouvelle qualité marchande. Or, le prix de revient de ce naissain est encore élevé et les écloseries ont du mal à faire face ) des demandes importantes. Les années favorables, la production naturelle est par contre très abondante ; nous avons pensé que l'utilisation des tuiles plastiques chaulées pourraient permettre d'obtenir du "naissain naturel un à un" par détroquage précoce, à très bas prix.
Tipo: Text
Palavras-chave: Ostréiculture; Reproduction; Huîtres; Naissain; Collecteur; Bassin Arcachon; Gironde.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/00009/11982/8686.pdf

Suivi de la reproduction de l'huître creuse Crassostrea gigas et de la moule Mytilus edulis dans le bassin de Marennes-Oléron. Bilan de trois années d'observation de 1997 à 2000. Rappels sur la reproduction de C. gigas et la technique de pêche de larves
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Faury, Nicole; Bouquet, Jean-paul; Guesdon, Stephane.
Monitoring of reproduction in the oyster Crassostrea gigas, and more particularly in the mussel Mytilis edulis were conducted, in the Marennes-Oléron Bay each year, from June to September. This report gives the main results obtained in 1997, 1998, 1999,2000 and compares the results between years. It also summarises the fishing techniques used and gives information on larval development in the annexes. NOT CONTROLLED OCR
Tipo: Text
Palavras-chave: Marennes Oléron; Larvae; Reproduction; Mussel; Oyster; Marennes Oléron; Larves; Reproduction; Moule; Huître.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/rapport-3883.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1963
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Trochon, Pierre.
Rapport de l'activité du Laboratoire de La Tremblade concernant l'année 1963
Tipo: Text
Palavras-chave: Rapport activité; Conchyliculture; Hydrologie; Mortalité; Météorologie; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1963
URL: http://archimer.ifremer.fr/doc/00069/18061/15605.pdf

Diet, feeding behaviour and trophic activity of the anchovy (Engraulis encrasicolus L.) in the Gulf of Lions (Mediterranean Sea)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Plounevez, Serge; Champalbert, Gisèle.
Feeding behaviour of adult European anchovy (Engraulis encrasicolus) was studied in the Gulf of Lions (northwestern Mediterranean Sea) in relation to major abiotic and biotic factors. Observations were made during the main spawning period (summer) for two years, data were collected through hydrological pro-tiling, zooplankton hauls and fish trawling performed in areas of high anchovy density. Temperature, salinity and zooplankton biomass were stratified in the study areas, with cladocerans numerous above the thermocline whereas copepods were dominant below. Engraulis encrasicolus was strictly zooplanctivorous during the main spawning season with copepod and crustacean larvae dominating in stomach contents. Anchovy exhibited high trophic activity during the...
Tipo: Text
Palavras-chave: Anchois; Alimentation; Zooplancton; Reproduction; Méditerranée; Anchovy; Feeding; Zooplankton; Spawning; Mediterranean Sea.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00301/41263/40455.pdf

Reproduction et recrutement de Mytilus edulis L. cultivée sur les bouchots du bassin de Marennes-Oléron
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boromtharanat, S; Deslous-paoli, Jean-marc; Heral, Maurice.
Observations on the gonads of 50 mm mussels, made during 1983 and 1984, showed that the onsert of gametogenesis occured during September and that the gonads reached maturity in December. Spawning took place from early February to April at temperatures from 10 to 12°C. The flesh had a high water content at the beginning of the spawning period. The pelagic live of the larvae lasts about 30 days with settlement occurring in June when some 90 and 100 spats settle on 1 cpm of rope per day. The intensity of recruitment was 56.10(4) and 722.10(4) larvaes on rope corresponding to a square meter during 1983, and between 28.10(4) and 81.10(4) during 1984.
Tipo: Text
Palavras-chave: Crawl; Recruitment; Reproduction; Mytilus edulis; Bouchot; Recrutement; Reproduction; Mytilus edulis.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/publication-2865.pdf

Etude du Secteur de Fouras (Partie Nord du Bassin Charentais) : Suivi de la reproduction de l'huître creuse Crassostrea gigas en 1998 - Bilan de dix années d'observation de 1989 à 1998
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Arnaud, Christophe; Fillon, Alain.
Le littoral charentais-maritime présente, dans sa partie nord entre l'estuaire de la Charente et la limite nord du département (île de Ré comprise), plusieurs sites intéressant l'ostréiculture pour le captage de juvéniles, dont le centre réputé de Fouras. Pour aider la profession, et selon son souhait, une assistance est fournie par l'IFREMER qui recherche les périodes d'émission de larves d'huîtres creuses afin d'informer les ostréiculteurs des époques les plus propices au captage. Contractualisé pour la première fois en 1996, puis en 1997, entre la SRC RE-CENTRE-QUEST et l'IFREMER, ce travail a été effectué à nouveau en 1998, par le laboratoire côtier DEL de La Rochelle et par la SRC, suite au renouvellement de ce contrat. La nouveauté de cette année est...
Tipo: Text
Palavras-chave: Reproduction; Naissain; Huître creuse; Crassostrea gigas; Fouras; Charente-Maritime.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00074/18492/16035.pdf

Testicular and Epididymal Parameters of Sahel Buck in the Humid Zone of Nigeria
Provedor de dados: International Journal of Morphology
Autores: Oyeyemi,M. O; Fayomi,A. P; Adeniji,D. Adejoke; Ojo,K. Mary.
The testicular and epididymal parameters of Sahel bucks in the humid zone of Nigeria was investigated. Twenty goats (30-54 months) weighing 23.48-32.03kg were used for the experiment. The scrotal circumference of the buck was measured. The bucks were then slaughtered and the testicles as well as the epididymides collected. The testicular weight, testicular diameter, testicular length and epididymal length were measured using a non-stretchable measuring tape. These parameters were correlated with one another and the values of the right testis and epididymis were compared with those of the left. The scrotal circumference was positively correlated with the testicular weight (r = 0.769, P&lt;0.01), testicular diameter (r = 0.827, P&lt;0.01), testicular length...
Tipo: Journal article
Palavras-chave: Testicular Parameter; Epididymal Parameter; Scrotal circumference; Reproduction; Sahel bucks.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000200021

One Case of Triphallia in the Marine Snail Echinolittorina peruviana (Caenogastropoda: Littorinidae)
Provedor de dados: International Journal of Morphology
Autores: Castillo,Viviana M; Brown,Donald I.
Gonochoric representatives of Littorinidae have a reproductive system organized with transit organs that connects the testicle with a penis specialized for internal fertilization. However, malformations at this level can produce, like triphallia (presence of triple penis). This description corresponds to one case of triphallia found in Echinolittorina peruviana (Lamarck, 1822) inhabitant of the South Pacific coasts. The macro and microscopic analysis reveals that every penis is an independent appendix whose individual morphology is similar to that in normal individuals, characterized by a non pigmented conic penis associated with a mammilliform gland located at the base of the right ocular tentacle. The cervical sperm groove lined by a simple ciliated and...
Tipo: Journal article
Palavras-chave: Mollusk; Reproduction; Reproductive system; Penial morphology; Malformation; Littorinidae.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300003

Ovarian Folliculogenesis in the Smallnose Fanskate Sympterygia bonapartii (Müller &amp;amp; Henle, 1841) (Chondrichthyes, Rajidae)
Provedor de dados: International Journal of Morphology
Autores: Díaz-Andrade,M. C; Galíndez,E. J; López-Cazorla,A; Estecondo,S.
Chondrichthyes have become an important economic resource in the last decades, with Argentina as one of the countries that exploits more sharks and skates, even at levels that exceed de limits of many species. However, there is a scarce knowledge of the reproductive biology of this group, particularly from species inhabiting the Southern hemisphere. This work shows the most relevant facts during folliculogenesis in Sympterygia bonapartii. Results show that germinal cells are present in immature and maturing females. The most important facts that vary along de follicular development are the number of types and layers of follicular cells, the establishment of thin projections from the follicular cells and the degree of development of the thecae. Follicular...
Tipo: Journal article
Palavras-chave: Elasmobranchs; Reproduction; Ovary; Folliculogenesis; Sympterygia bonapartii.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100030

Histological and Histochemical Changes by Clove Essential Oil Upon the Gonads of Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae)
Provedor de dados: International Journal of Morphology
Autores: Cruz,Glaucilane dos Santos; Teixeira,Valeria Wanderley; de Oliveira,Jose Vargas; Teixeira,Alvaro Aguiar Coelho; Araújo,Alicely Correia; Alves,Thiago Jose de Souza; da Cunha,Franklin Magliano; Breda,Mariana Oliveira.
Spodoptera frugiperda is a polyphagous insect that causes economic losses to several crops in Brazil and is the major obstacle to corn production. Researches focusing on alternative control, e.g. botanical products are expanding to offer a wide variety of molecules that interfere with different biological parameters of insect pests. Thus, this study tested the hypothesis that clove essential oil affects the spermatogenesis, ovarioles histochemistry and the fertility of S. frugiperda. The results showed that clove essential oil affects the gametogenesis of S. frugiperda ovarioles, reflecting negatively on its reproduction, proving to be a promising tool for controlling this pest.
Tipo: Journal article
Palavras-chave: Fall armyworm; Spodoptera frugiperda; Reproduction; Histochemistry; Histology; Syzygium aromaticum.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000400034

Effects of Malathion on Cellularity and Sperm Differentiation in Testis and Epididymis of Adult Rats
Provedor de dados: International Journal of Morphology
Autores: Espinoza-Navarro,O; Bustos-Obregón,E.
Malathion is an organophosphorous insecticide, used worldwide for pest and disease control; however, it could also affect the reproductive patterns of several species. The aim of this study was to determine the effects of malathion in the cellularity and sperm differentiation in testis and epididymis of rats. Twenty adult male Sprague Dawley rats were divided into a malathion-treated group (n=10, dose of 170 mg/kg via subcutaneous injection for a period of 13 days) and control group (n=10, injected only with normal saline). After treatments, the rats were sacrificed by regulated euthanasia and assessed for sperm count in testis and epididymis and epididymal teratospermia degree. The results showed a significant decrease in body, testicular and epididymal...
Tipo: Journal article
Palavras-chave: Reproduction; Rat; Malathion; Cytotoxicity.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100020

Histological Seasonal Changes in Ovaries of Spotted Tinamous (Nothura maculosa Tinamidae, Temminck, 1815) Related to Gonadotrope Population
Provedor de dados: International Journal of Morphology
Autores: Claver,Juan; Rosa,Juan M; Lombardo,Daniel M; Soñez,María C.
Nothura maculosa is a South American Tinamidae with a marked seasonal reproductive pattern. This work describes ovarían seasonal changes in this species related to gonadotrope (GTHs) population. Ovary and pituitary samples were collected monthly from adult birds during four annual periods. They were fixed in Bouin's solution and processed for light microscopy. The data of post-fixation gonadal weight were analysed using STATISTIX 4.0. Histological sections of the ovaries were stained with H/E, PAS and Goldner-Masson trichrome. Single and double immunostaining were applied on pituitary sections with anti-chicken-FSH and anti-chicken-LH antibodies. The samples were analysed in quarterly periods of the year, Pl: March-May (resting stage); P2: June-August...
Tipo: Journal article
Palavras-chave: Birds; Gonadotropes; Nothura maculosa; Ovary; Pituitary; Reproduction; Tinamidae.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200017

Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
Provedor de dados: International Journal of Morphology
Autores: Espinoza-Navarro,Omar; Ferreira,Carolina; Bustos-Obregón,Eduardo.
The earthworm Eisenia foetida (Annelida, Oligochaeta) is an excellent biosentinel model organism for assessing potential toxicological risks by xenobiotics in terrestrial ecosystems. Methamidophos is an organophosphorous insecticide widely used to control agricultural pests. Its main action is due to inhibition of the enzyme acetylcholinesterase. The aim of this study was to evaluate the toxicity of methamidophos on the morphology and male parameters in Eisenia foetida. After determining the LD50 for methamidophos (85.34 mg/kg soil), five groups were formed, including control subjects, and sprayed with tap water. Methamidophos treated groups were subjected to doses of 1/10, 1/6, 1/3 and 2/3 of the LD50. Each group was analyzed at day 1, 6, 14 and 30...
Tipo: Journal article
Palavras-chave: Reproduction; Eisenia foetida; Methamidophos; Cytotoxicity.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300051

Morphological Changes in the Pregnant Uterus of the Smooth Hound Dogfish Mustelus schmitti Springer, 1939 (Gatuzo) (Condrichthyes, Triakidae): Microscopic Study and Phylogenetic Reproductive Implications
Provedor de dados: International Journal of Morphology
Autores: Galíndez,E. J; Díaz Andrade,M. C; Moya,A. C; Estecondo,S.
Elasmobranchs are important, not only as an economic resource but also for their phylogenetic position. Their slow growth and long reproductive cycles, together with the high fisheries pressure exerted, attempt to the knowledge of all biological parameters of species. In this work we analyze the histology of the pregnant uterus of the gatuzo, a viviparous aplacental shark. The mucosa depicts modifications similar to those of placental species and others proper of histotrophism. Likewise, a network-like muscular layer in the mucosa was described for first time in the genus. The presence of vitelline plates in the gut of at term embryos suggests that the maternal supplies are not enough for the big fetus development. The relationships between maternal...
Tipo: Journal article
Palavras-chave: Elasmobranchs; Reproduction; Uterus; Viviparity; Mustelus schmitti.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400004

Alteration of the Reproductive Patterns in Drosophila melanogaster by Effects of High Concentrations of Boron on In Vitro Cultured Medium
Provedor de dados: International Journal of Morphology
Autores: Espinoza-Navarro,O; Rodríguez,H; Rodríguez,M; Silva,E; Luque,A.
The objective of this study was to evaluate the effects of boron (B) using as a biological model Drosophila malanogaster. Analizing specifically the responses over descendency to doses of 6,0 and 12 mg/L, comparing a control group which culture medium was prepared with water with boron concentrations of 0,6 mg/L, according to World Health Organization. The results show a significative alteration in the number of descendency from F1 to F3 and then a tendency to normalization in F4 and F5. Also a significant change in proportions between the males and females, with an acute effect on F1 and then a possible chronic effect from F2 to F5, increasing the proportion of females over males. This differences between genders are significant only until F4, on F5 these...
Tipo: Journal article
Palavras-chave: Reproduction; Boron; Reproductive toxicology; Drosophila melanogaster.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300021

Lean vs. Obese Mice: The Ventral Prostate Revisited
Provedor de dados: International Journal of Morphology
Autores: Martins,Fabiane Ferreira; del Sol,Mariano; Aguila,Marcia Barbosa; Mandarim-de-Lacerda,Carlos Alberto.
Obese mice (C57BL/6J-ob/ob) do not express leptin and develops hyperphagia, decreased energy expenditure, obesity, hyperglycemia, hyperinsulinemia, hypothermia, and infertility. Obesity causes reproductive dysfunction with negative impacts on prostatic structure and fertility. We aimed to compare the structure and molecular aspects of the ventral prostate between of lean and obese (ob/ob) mice. Three months old male lean and obese mice had their prostates dissected and prepared for light microscopy and immunofluorescence. In comparison to the lean mouse, the obese mouse showed a substantial structural modification in the ventral prostate starting with an atrophy of the prostate ventral lobe. Histologically, the acini showed a reduction in size, and in the...
Tipo: Journal article
Palavras-chave: Collagen; IL6; TNFalpha; Alpha-actin; Reproduction; Ob/ob mouse.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200003

Histological Validation of Morphochromatically-Defined Gonadal Maturation Stages of Green Abalone (Haliotis fulgens) Philippi,1845 and Pink Abalone (Haliotis corrugata) Wood, 1828
Provedor de dados: International Journal of Morphology
Autores: Vélez-Arellano,Nurenskaya; García-Domínguez,Federico Andrés; Lluch-Cota,Daniel B; Gutiérrez-González,José L; Sánchez-Cárdenas,Rebeca.
Identifying the maturity stage of specimens is essential for the determination of the spawning season, which in turn facilitates the formulation of adequate fisheries management measures for the sustainable use of sea resources, such as abalone. This study aims to validate, based on histological evidence, a gonad maturation scale that encompasses four morphochromatically-defined stages (developing, maturity, spawning and resting) for females and males, plus an additional stage for reproductively inactive (undifferentiated) specimens, to be used as an identification key. Given the similarity between Haliotis fulgens and Haliotis corrugata as to their morphochromatic features, the gonadal maturation scale can be used for both species.
Tipo: Journal article
Palavras-chave: Assessment tools; Gametogenesis; Gonads; Reproduction.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300039

Dinâmica populacional de marsupiais e roedores no Parque Municipal da Lagoa do Peri, Ilha de Santa Catarina, sul do Brasil
Provedor de dados: Mastozoología Neotropical
Autores: Graipel,Maurício E.; Cherem,Jorge J.; Monteiro-Filho,Emygdio L. A.; Glock,Luiz.
A two-year mark-recapture study of small mammals was conducted in an area of Atlantic Forest hillside in the state of Santa Catarina, Brazil. Four species of marsupial and seven species of rodent were captured during 12 132 trap-nights. Aspects of population dynamics and natural history are discussed for each common species. The sex ratio was biased toward males for all species. Oryzomys russatus, Didelphis aurita and Akodon montensis had the highest population densities, the least amount of variation in population density and an inverse relationship between survivorship rates and population densities. Micoureus paraguayanus, Nectomys squamipes and O. angouya, registered the higher population densities after continual survivorship rates. The recruitment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Biology; Ecology; Reproduction; Small mammals.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000100004

Seasonal variation in foraging group size of crab-eating foxes and hoary foxes in the Cerrado Biome, Central Brazil
Provedor de dados: Mastozoología Neotropical
Autores: Lemos,Frederico Gemesio; Facure,Kátia Gomes.
In regions with a pronounced dry season, such as the Cerrado Biome (Brazilian savannah), climate seasonality may affect food availability for canid species and, consequently, their foraging behavior. We investigated seasonal variation in foraging group size of crab-eating foxes (Cerdocyon thous) and hoary foxes (Lycalopex vetulus) in the Cerrado region for three consecutive years. Data were obtained by direct observations of foraging foxes during spotlight surveys. Both species were sighted foraging individually or in pairs with or without their juvenile offspring. However, crab-eating foxes foraged in pairs more frequently in the wet season and individually more frequently in the dry season whereas hoary foxes foraged mostly individually throughout the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crab-eating fox; Direct counts; Hoary fox; Reproduction; Social behavior.
Ano: 2011
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000200006

Biologia reprodutiva de Delomys dorsalis (Hensel, 1872) - Rodentia, Sigmodontinae - em área de floresta ombrófila mista, Rio Grande do Sul, Brasil
Provedor de dados: Mastozoología Neotropical
Autores: Cademartori,Cristina V.; Fabián,Marta E.; Manegheti,João O.
Delomys dorsalis is restricted to the wet tropical and subtropical forests of southern and southeastern Brazil and northeastern Argentina . The reproductive cycle of this species was studied by the histological examination of the reproductive tracts of animals caught in an area of mixed forest with conifers (29º 23' S, 50º 23' W), in southern Brazil , and from observations on a laboratory group of individuals. Fourteen expeditions were carried out from February 1997 to April 1998, during approximately 3 nights, using 140 live traps set on the ground and on branches between 1.5 and 2.0 m high. Reproductively active individuals were observed year round, although winter was marked by a reduction in breeding activity resulting from recruitment. Females showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Delomys dorsalis; Mixed forest with conifers; Reproduction; Sigmodontinae; Southern Brazil.
Ano: 2005
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832005000200002

New data on the natural history and morphometrics of Lutreolina crassicaudata (Didelphimorphia) from central-eastern Argentina
Provedor de dados: Mastozoología Neotropical
Autores: Muschetto,Emiliano; Cueto,Gerardo R.; Suárez,Olga V.
We provide new data on the natural history and morphometrics of one of the least studied didelphid marsupial species, Lutreolina crassicaudata. Field work was conducted in central-eastern Argentina during two consecutive years. Juveniles and sub-adults were captured during summer and autumn. Reproduction showed seasonality with a continuous breeding period from spring to summer (September to February). The analysis of 17 scats belonging to 17 individuals showed mainly seeds and vegetal remains, as well as amphibians, birds and invertebrates. Sexual dimorphism in juveniles and sub-adults was registered for the first time, being males larger and heavier than females.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Opossum; Reproduction; Seasonal fluctuation; Sexual dimorphism.
Ano: 2011
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000100006

Ecological considerations on Xeronycteris vieirai: an endemic bat species from the brazilian semiarid macroregion
Provedor de dados: Mastozoología Neotropical
We provide information on distribution, shelter use, food consumption, and reproductive biology of the nectar-feeding bat Xeronycteris vieirai. Six adult bats were mist netted near the caves and bromeliad Encholirium splendidum in a transition area between Caatinga and Cerrado biomes in Brazil. Bats were leav­ing the caves and were observed feeding on that bromeliad species. Our results suggest that distribution of X. vieirai may not be restricted to the Caatinga, but may occupy the entire Brazilian semiarid macroregion. Echolirium splendidum is an important resource for bats in karstic regions and its distribution might be related to the distribution and reproduction of X. vieirai.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cave; Distribution; Food consumption; Nectar-feeding bat; Reproduction.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832018000100008

Hyperthelie, Wurfgröße und Trächtigkeitsdauer bei der Unterfamilie Tenrecinae Cabrera, 1925 (Mammalia: Insectivora: Tenrecidae), nebst Bemerkungen zur Längsstreifung der Gattung Hemicentetes
Provedor de dados: Naturalis Digital Academic Repository
Autores: Poduschka, Walter.
In a comparison of basic reproductive variables (number of teats, litter size, and duration of pregnancy) in the Madagascan Tenrecinae, some striking features (hyperthelia, litter size) are observed in Tenrec ecaudatus Lacépède, 1799 and the genus Hemicentetes Mivart, 1871. These variations are compared to Setifer setosus Froriep, 1806 and Echinops telfairi Martin, 1838. Tenrec ecaudatus gives birth to litters at intervals shorter than what was once believed to be the duration of pregnancy. This could be due either to superfetation, or to giving birth to one litter in two or more installments. The longitudinal stripe pattern of the genus Hemicentetes is interpreted as a mimicry of the sympatric, equally striped, juvenile Tenrec ecaudatus. The latter...
Tipo: Article / Letter to the editor
Palavras-chave: Insectivora; Tenrecidae; Hyperthelia; Reproduction; Litter size; Pregnancy; Mimicry.
Ano: 1996
URL: http://www.repository.naturalis.nl/record/504596

Corallimorphus profundus in shallow Antarctic habitats: Bionomics, histology, and systematics (Cnidaria: Hexacorallia)
Provedor de dados: Naturalis Digital Academic Repository
Autores: Riemann-Zürneck, K.; Iken, K.
In March 2000 and November/December 2001 thirteen specimens of Corallimorphus profundus Moseley, 1877, a conspicuous, anemone-like cnidarian, were hand-sampled by SCUBA diving in 30 to 40 m depth off US Palmer Station, Antarctic Peninsula. Corallimorphus species were formerly recorded only from deep water habitats from where they had been brought up more or less damaged, with most of their epithelia lost or macerated. The present well preserved specimens offer the opportunity to study various aspects of the species’ morphology and biology, particularly as one mature female contained a full cycle of oogenesis besides two batches of brooded developmental stages. Most of the results obtained demonstrate that the genus Corallimorphus shows features and...
Tipo: Article / Letter to the editor
Palavras-chave: Corallimorpharia; Corallimorphidae; Corallimorphus; Nectactis; Scleractinia; Micrabaciidae; Leptopenus; Stephanophyllia; Letepsammia; Histology; Cnidom; Reproduction; Ecology; Systematics; Antarctic Peninsula; 42.79.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/220566

Alimentary canal and reproductive tract of Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae, Scolytinae)
Provedor de dados: Neotropical Entomology
Autores: Rubio G.,José D.; Bustillo P.,Alex E.; Vallejo E.,Luis F.; Acuña Z.,José R.; Benavides M.,Pablo.
The alimentary canal and the reproductive tract of males and females of Hypothenemus hampei Ferrari are described. The alimentary canal of H. hampei showed the crop with several spine-like structures and the midgut with few gastric caeca. We evidenced for the first time that adult females need to feed on coffee in order to produce viable eggs before and during oviposition period. The presence of air bubbles inside the anterior midgut may be due to starvation rather than the response of the environment during flying as previously reported. Two ovaries and the same structures and arrangements common to individuals of the Curculionidae beetles composed the female reproductive system. The male reproductive tract showed a significant difference with respect to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee Berry Borer; Internal morphology; Feeding behavior; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000200006

Phenotypic plasticity and fitness in egg parasitoids
Provedor de dados: Neotropical Entomology
Autores: Boivin,Guy.
Several proxies can be used to estimate the fitness of egg parasitoids: size, longevity, fecundity, mating ability and vagility. All these proxies are positively correlated with the lifetime fitness gain of an individual. However, the phenotypic plasticity, which is the ability of a genotype to produce distinct phenotypes depending on environmental conditions, may alter the value of these proxies. Host related factors (host species and quality), competition and duration of development will influence the proxies expressed by a given phenotype. When the phenotype is modified by the temperature at which an individual develops, the resulting phenotype will vary based on the life history strategy of the parasitoid. While in koinobiont species an increase in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitness; Proxy; Reproduction; Longevity; Phenotype.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400001

Reproductive phenology of the Mexican fruit fly, Anastrepha ludens (Loew) (Diptera: Tephritidae) in the Sierra Madre Oriental, Northern Mexico
Provedor de dados: Neotropical Entomology
Autores: Thomas,Donald B.
In its native habitat in northern Mexico, Anastrepha ludens (Loew) is normally bivoltine although a third generation is achieved in some years. The flies overwinter mainly in the puparial stage, emerging in January-February. These flies oviposit in the spring crop of a wild citrus, Sargentia greggii (S. Wats.). The primary population peak follows in late spring to early summer (in exceptional years, separate peaks in spring and summer). Dissection of the females demonstrated that most of the flies in the spring peak are reproductively immature, indicating emergence of new adults. Activity subsides in late summer, or at least, few flies can be trapped at this time. Then in the fall there is a resurgence of adult activity. However, in contrast to the spring...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Egg-load; Bivoltine; Citrus.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000300002

Morphology and biology of Porphyrosela minuta Clarke 1953 (Lepidoptera: Gracillariidae, Lithocolletinae) in Uruguay
Provedor de dados: Neotropical Entomology
Autores: Bentancourt,Carlos M.; Scatoni,Iris B.
Porphyrosela minuta Clarke is a gracillariid that causes damage on white clover (Trifolium repens) in Uruguay. In this article, the eggs, all the larval instars, the pupa and the external morphological characteristics of the adult are described. Information about the insect's biology under laboratory and field conditions is presented. The eggs are laid singly on the upper surface of the leaflets. The larvae make extensive mines that appear as white blotches. The larvae develop through five instars and do not remain exposed during their development. At 25ºC the life cycle lasted 16.2 days, made up of 3.0 for eggs, 8.8 for larvae and 4.4 for pupae. Females began laying on the first night, and during an oviposition period that varied between five and 12 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insect; Leaf-miner; Description; Development; Reproduction.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000400005

Desenvolvimento ovariano e influência da cópula na maturação dos ovários de Diaphorina citri Kuwayama (Hemiptera: Psyllidae)
Provedor de dados: Neotropical Entomology
Autores: Dossi,Fábio C A; Cônsoli,Fernando L.
As many other insects with a restricted diet, the citrus psyllid Diaphorina citri Kuwayama, which vector the causing agent of the Huanglongbing, the bacteria Candidatus Liberibacter spp., is intimately associated with symbiotic microorganisms. These mutualist symbionts play a key role on their host nutritional ecology, and are vertically transmitted to the progeny. However, despite the role symbionts play on host development and reproduction, and the growing opportunities of exploitation of the association insect-symbiont to control insect vectored-pathogens, there are very few studies on the host reproductive biology and on the symbiont transovarial transmission. Therefore, we aimed at analyzing the ovary development during D. citri adulthood, and at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproductive strategy; Symbiont; Reproduction.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300015

Ovary Development and Maturation in Nezara viridula (L.) (Hemiptera: Pentatomidae)
Provedor de dados: Neotropical Entomology
Autores: Fortes,P; Salvador,G; Cônsoli,FL.
Ovary development and maturation of Nezara viridula (L.) were evaluated by examining ovariole morphology and the alterations in the biochemical (protein synthesis related to reproduction) composition of the hemolymph. Quantitative and qualitative protein analyses were performed and ovary structural alterations for the pre-reproductive and reproductive stages were recorded. Total concentration of proteins in female hemolymph gradually increased until the end of the pre-mating stage, remaining unaltered thereafter. Proteins linked to reproduction (vitellogenins) appeared in the hemolymph 10 days after adult emergence and indicated the end of the pre-mating stage. After mating, total protein concentration in the hemolymph was lower compared to virgin females;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitellogenesis; Reproduction; Oocyte.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000100013

Reproductive biology of pacu Piaractus mesopotamicus (Holmberg, 1887) (Teleostei: Characidae) in the Cuiabá River Basin, Mato Grosso, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Costa,Rosa Maria Rodrigues da; Mateus,Lúcia Aparecida de Fátima.
The purpose of this study was to analyze the reproductive strategy and life-history traits involved in the reproductive processes of P. mesopotamicus in two regions of the Cuiabá River basin, the first of these encompassing its headwaters (Cuiabazinho River - Rosário Oeste) and the other the flood area of the Cuiabá River (Porto Cercado - Poconé). A total of 391 individuals were sampled monthly from August 2006 to July 2007, 159 from the headwaters and 232 from the flood area. The size structure indicated that the females in the headwaters attain longer lengths than the males, while no differences in length were found in the flood area. Females predominated in the headwaters, while males outnumbered females in the flood area. The reproductive period in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Size at first maturity; Sexual proportion; Pantanal.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300012

Reproductive biology of the Neotropical electric fish Brachyhypopomus draco (Teleostei: Hypopomidae) from southern Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Schaan,Andrea B.; Giora,Júlia; Fialho,Clarice B.
The reproductive biology of a population of the weakly electric fish Brachyhypopomus draco from southern Brazil is described. Information is provided on the establishment of the reproductive period in this species and its relations with environmental and feeding factors, as well as on the absolute and relative fecundities, spawning type, sex ratio and sexual dimorphism. The species exhibits a relatively long reproductive period, a relative fecundity of 0.173 oocytes per mg of female total weight, and fractional spawning. The sex ratio did not differ from 1:1 during all sampled months. Sexual dimorphism related to hypertrophy of the male's distal portion of caudal filament was observed and males grew to greater lengths than females. Male gonadosomatic index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Gymnotiformes; Abiotic factors; Laguna dos Patos system; Parque Estadual de Itapuã.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400023

Colorful invasion in permissive Neotropical ecosystems: establishment of ornamental non-native poeciliids of the genera Poecilia/Xiphophorus (Cyprinodontiformes: Poeciliidae) and management alternatives
Provedor de dados: Neotropical Ichthyology
Autores: Magalhães,André Lincoln Barroso; Jacobi,Claudia Maria.
ABSTRACT Headwater creeks are environments susceptible to invasion by non-native fishes. We evaluated the reproduction of 22 populations of the non-native livebearers guppy Poecilia reticulata, black molly Poecilia sphenops, Yucatan molly Poecilia velifera, green swordtail Xiphophorus hellerii, southern platyfish Xiphophorus maculatus, and variable platyfish Xiphophorus variatus during an annual cycle in five headwater creeks located in the largest South American ornamental aquaculture center, Paraíba do Sul River basin, southeastern Brazil. With few exceptions, females of most species were found reproducing (stages 2, 3, 4) all year round in the creeks and gravid females of all species showed small sizes indicating stunting. Juveniles were frequent in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Invasive species; Livebearers; Reproduction; Stream.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100204

Intertidal life: field observations on the clingfish Gobiesox barbatulus in southeastern Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Pires,Tiago H. S; Gibran,Fernando Z.
The clingfish Gobiesox barbatulus shows nocturnal feeding activity, spending most part of the day stationary and adhered to the inferior part of stones. To feed, this species uses the sit-and-wait and particulate feeding tactics. It shows a carnivorous feeding habit mostly consuming small benthic crustaceans. It can move in two ways: (1) "stone-by-stone", sliding its ventral sucker disc across each stone and (2) "surf", when it takes advantage of the energy of the ebbing tide to quickly cross a distance up to four times its body length. Its reproductive season occurs between the end of spring and the beginning of summer, during which time it lays about 2,000 adhesive eggs of 1 mm each in a single layer under stones. It has more than one egg-laying session...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity; Microhabitat; Diet; Reproduction; Gobiesocidae.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100022

Reproductive characteristics and the weight-length relationship in Anableps anableps (Linnaeus, 1758) (Cyprinodontiformes: Anablepidae) from the Amazon Estuary
Provedor de dados: Neotropical Ichthyology
Autores: Oliveira,Valéria de Albuquerque; Fontoura,Nelson Ferreira; Montag,Luciano Fogaça de Assis.
The present study analyzed the length-weight relationship and some aspects of the reproductive biology of Anableps anableps from the mouth of the Maracanã River, in the Brazilian state of Pará. The specimens were collected using two 30 m-long gillnets with 15 and 20 mm mesh size, as well as a 1 m-diameter hand net with a 10 mm mesh. A total of 865 specimens were collected, from which an adult sex ratio of 2.12 females per male was recorded (χ² = 13.07; p&lt;0.05). Females presented positively allometric growth, whereas males were negatively allometric. In the additional analyses, the gonads of 371 female specimens were observed microscopically. Gonadal development was classified in three stages: immature (5.0%), maturing (12.0%), and mature (83.0%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: "Four-eyed" fish; Reproduction; Viviparity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400007

Estimating size at first maturity (L50) from Gonadossomatic Index (GSI) data
Provedor de dados: Neotropical Ichthyology
Autores: Fontoura,Nelson F.; Braun,Aloísio S.; Milani,Paulo Cesar C.
Correct estimates of size at first maturity (L50) are useful for fish stock management and different methods have been proposed. In this study we propose the use of a modified logistic to estimate L50, including a variable asymptote (A). We also test the use of the Gonadossomatic Index (GSI) as a flag to establish the reproductive status of each female fish. The method is demonstrated using GSI data for four Neotropical fish species: Characiformes: Astyanax fasciatus (n = 473) and Oligosarcus robustus (n = 297); Siluriformes: Loricariichthys anus (n = 427) and Trachelyopterus lucenai (n = 195). The results were stable enough to propose this method be used for other fish species with different life histories and with a relatively unconstrained sampling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Reproduction; Patos lagoon; Logistic function.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200013

Reproductive behavior, development and eye regression in the cave armored catfish, Ancistrus cryptophthalmus Reis, 1987 (Siluriformes: Loricariidae), breed in laboratory
Provedor de dados: Neotropical Ichthyology
Autores: Secutti,Sandro; Trajano,Eleonora.
The troglobitic armored catfish, Ancistrus cryptophthalmus (Loricariidae, Ancistrinae) is known from four caves in the São Domingos karst area, upper rio Tocantins basin, Central Brazil. These populations differ in general body shape and degree of reduction of eyes and of pigmentation. The small Passa Três population (around 1,000 individuals) presents the most reduced eyes, which are not externally visible in adults. A small group of Passa Três catfish, one male and three females, reproduced spontaneously thrice in laboratory, at the end of summertime in 2000, 2003 and 2004. Herein we describe the reproductive behavior during the 2003 event, as well as the early development of the 2003 and 2004 offsprings, with focus on body growth and ontogenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Troglobitic catfish; Brazilian caves; Regressive evolution; Reproduction; Goiás State.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300016

Reproductive biology of Cetengraulis edentulus (Cuvier, 1829), the major fishery resource in Guanabara Bay, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Franco,Ana Clara Sampaio; Brotto,Daniel Shimada; Zee,David Man Wai; Santos,Luciano Neves dos.
Cetengraulis edentulus is a broadely distributed engraulid in Southwest Atlantic, currently accounting for the main fish species commercially exploited at Guanabara Bay, Brazil. This study aimed to extend the knowledge on reproduction of C. edentulus at Guanabara Bay and to test whether some descriptors of reproductive activity, especially the gonadosomatic index (GSI), and the index of reproductive activity (IRA) changed among seasons. A total of 978 C. edentulus specimens were retrieved from purse seine commercial landings at Conservas Rubi S.A. company, in São Gonçalo city, RJ. Subsamples of 90-120 individuals were collected from bimonthly yields between July 2010 (winter) and June 2011 (autumn). Most fish were adults (120-170 mm TL), in response to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic anchoveta; Engraulidae; Fecundity; Gonad maturation; Reproduction; Tropical bay.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400819

Reproductive biology of Sympterygia bonapartii (Chondrichthyes: Rajiformes: Arhynchobatidae) in San Matías Gulf, Patagonia, Argentina
Provedor de dados: Neotropical Ichthyology
Autores: Estalles,María L.; Perier,María R.; Giácomo,Edgardo E. Di.
ABSTRACT This study estimates and analyses the reproductive parameters and cycle of Sympterygia bonapartii in San Matías Gulf, northern Patagonia, Argentina. A total of 827 males and 1,299 females were analysed. Males ranged from 185 to 687 mm of total length (TL) and females from 180 to 742 mm TL. Sexual dimorphism was detected; females were larger, heavier, exhibited heavier livers, wider discs and matured at lager sizes than males. Immature females ranged from 180 to 625 mm TL, maturing females from 408 to 720 mm TL, mature ones from 514 to 742 mm TL and females with egg capsules from 580 to 730 mm TL. Immature males ranged from 185 to 545 mm TL, maturing ones from 410 to 620 mm TL and mature males from 505 to 687 mm TL. Size at which 50% of the skates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elasmobranchii; Reproduction; Skate; South Western Atlantic Ocean.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100220

Identification of the stages of ovarian maturation of the Argentine hake Merluccius hubbsi Marini, 1933 (Teleostei: Merlucciidae): advantages and disadvantages of the use of the macroscopic and microscopic scales
Provedor de dados: Neotropical Ichthyology
Autores: Honj,Renato M.; Vaz-dos-Santos,André M.; Rossi-Wongtschowsk,Carmen Lúcia D. B.
The Argentine hake Merluccius hubbsi is a demersal-pelagic species on which few studies have been undertaken, despite its importance for the fisheries of the South-Southeastern Brazilian region, . The species is the most important commercial fishery resource in Uruguay and Argentina, where several studies have permitted the proper monitoring of the species. The ovarian maturation of the Argentine hake is analysed in this study. A scale of maturation is presented in the light of the oocyte development and the use of macro and microscopic scales of ovarian maturation are compared. It was detected that the oocyte types and derived structures present in the ovaries are similar to those already described both for the species and for teleosts in general; group...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovarian development; Histology; Reproduction; Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300004

Ecology and life history of an Amazon floodplain cichlid: the discus fish Symphysodon (Perciformes: Cichlidae)
Provedor de dados: Neotropical Ichthyology
Autores: Crampton,William G. R.
The discus fishes of the genus Symphysodon are popular ornamental cichlids that occur in floodplain lakes and flooded forests of the lowland Amazon Basin. These habitats are characterized by extreme seasonal fluctuations in the availability of food, shelter and dissolved oxygen, and also the densities of predators and parasites. Most aspects of discus biology are influenced by these fluctuating conditions. This paper reports an autoecological study of the western Amazonian discus S. haraldi (until recently classified as S. aequifasciatus). This species feeds predominantly on algal periphyton, fine organic detritus, plant matter, and small aquatic invertebrates. At high water it forages alone or in small groups in flooded forests. At low water it forms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flooded forest; Ornamental fishes; Parasite; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400008

Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Neuberger,Andréa L.; Marques,Elineide E.; Agostinho,Carlos S.; Oliveira,Rafael J. de.
In order to evaluate aspects of the reproductive biology of Rhaphiodon vulpinus in the Upper and Middle Tocantins River, samples were taken monthly from October, 1999 through September, 2001, by means of gill nets. Males, which were more abundant than females (chi2 146.87: df=1: p&lt;0.05), matured at a smaller size. The reproductive period of the species extended essentially from November through January, with a peak of activity in November. Fecundity, with an estimated mean value of 98,185 oocytes, varied from 38,177 to 215,841 oocytes, and it did not correlate with the length of the individual female analyzed (r=0.4663: p=0.206). Relative fecundity was 130.6 oocytes/g total weight. Mature oocytes had a mean diameter of 0.98 mm, corresponding to a volume...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sex ratio; First maturation; Reproduction; Fecundity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000400007

Population structure and reproductive biology of Cichla kelberi (Perciformes, Cichlidae) in Lobo Reservoir, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Souza,Jussara E. de; Fragoso-Moura,Evelise N.; Fenerich-Verani,Nelsy; Rocha,Odete; Verani,José R.
The structure of Cichla kelberi population was characterized regarding the sex ratio, total length composition and some reproductive characteristics. The specimens were collected in two periods, from November 2002 to November 2003 and from December 2004 to May 2006. The sex ratio was significantly different than 1:1. The total length varied from 3.4 to 40.1 cm, with individuals in the shortest length classes occurring throughout the year, but with greater incidence in the warmer periods. Females and males reached similar lengths and there was no difference between the sexes regarding the length-weight relationship. The estimated values of condition factor were near the central value of 1.0 and decreased during the cooler months, coinciding with periods of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Condition factor; Fecundity; Length-weight relationship; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200007

Mercury concentration in the freshwater bonefish Cyphocharax gilbert (Curimatidae) and its parasite the crustacean Riggia paranensis (Cymothoidae)
Provedor de dados: Neotropical Ichthyology
Autores: Lins,Débora C.; Meirelles,Maria E.; Malm,Olaf; Lima,Neuza R. W.
Fish parasites can accumulate heavy metals reaching higher concentrations than the host and may affect the host's bioaccumulation. The present study compared total mercury concentration in the liver and muscle of Cyphocharax gilbert and in the parasite Riggia paranensis sampled in the middle Itabapoana River, Brazil, also considering the reproductive stages of both fish and parasite. Mean concentrations of mercury in muscle of fish varied from 20.8 ng.g-1 in mature females to 38.1 ng.g-1 in post-spawning females. The mean concentrations in fish liver varied from 60.9 ng/g in post-spawning females to 110.4 ng.g-1 in infested males. The mean concentration of mercury in parasites varied from 26.2 ng.g-1 in specimens carrying early embryo to 39.5 ng.g-1 in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metal; Bioaccumulation; Parasitic castration; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200017

Effects of reservoirs water level variations on fish recruitment
Provedor de dados: Neotropical Ichthyology
Autores: Lima,Fabíula T. de; Reynalte-Tataje,David A.; Zaniboni-Filho,Evoy.
ABSTRACT The construction of hydroelectric power plants has many social and environmental impacts. Among them, the impacts on fish communities, which habitats are drastically modified by dams, with consequences across the ecosystem. This study aimed to assess the influence of water level (WL) variations in the reservoirs of the Itá and Machadinho hydroelectric plants on the recruitment of fish species from the upper Uruguay River in southern Brazil. The data analyzed resulted from the WL variation produced exclusively by the hydroelectric plants generation and were collected between the years 2001 and 2012. The results showed significant correlations between the abundance of juvenile fish and the hydrological parameters only for some reproductive guilds....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrological Parameters; Itá; Juveniles; Machadinho; Reproduction; Uruguay River.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300211

17,20β-P and cortisol are the main in vitro metabolites of 17-hydroxy-progesterone produced by spermiating testes of Micropogonias furnieri (Desmarest, 1823) (Perciformes: Sciaenidae)
Provedor de dados: Neotropical Ichthyology
Autores: Vizziano Cantonnet,Denise; Mateo,Magdalena; Alberro,Andrés; Barrios,Florencia; Fostier,Alexis.
The aim was to investigate the major C21 steroids produced by spermiating white croaker Micropogonias furnieri (Sciaenidae) in order to establish the potential mediator of gamete maturation in males of this species. The testes steroid production at the spawning season was identified incubating the 3H-17-hydroxy-4-pregnene-3,20-dione precursor through thin layer chromatography, high pressure liquid chromatography, enzymatic oxydation, acetylation and immunochemistry analyses. 17,20β-Dihydroxy-4-pregnen-3-one (17,20β-P) and 11β,17,21-Trihydroxy-4-pregnene-3,20-dione (cortisol) were the main metabolites produced. Contrary to what we expected, 17,20β,21-Trihydroxy-4-pregnen-3-one was not detected. Circulating levels of 17,20β-P were undetectable in immature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Male gonad; Maturing steroids; Reproduction; Steroid synthesis; White croaker.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300613

Seasonal changes in the gonadossomatic index, allometric condition factor and sex ratio of an auchenipterid catfish from eastern Amazonia
Provedor de dados: Neotropical Ichthyology
Autores: Freitas,Tiago Magalhães da Silva; Almeida,Vitor Hudson da Consolação; Montag,Luciano Fogaça de Assis; Rocha,Rossineide Martins da; Fontoura,Nelson Ferreira.
The aim of the present study was to evaluate the seasonal pattern of the gonadosomatic index (GSI), condition factor (K), and sex ratio in the catfish Auchenipterichthys longimanus (Siluriformes: Auchenipteridae) as an approach to identify its reproductive period. A total of 589 A. longimanus specimens (251 males and 338 females) were captured in the rivers of the Caxiuanã National Forest, in the Brazilian state of Pará, between July, 2008 and July, 2009. Among the male specimens, 171 were classified as adults and 80 as juveniles, while there were 249 adults and 89 juvenile females. Using a sinusoidal equation, analysis of the GSI revealed a reproductive asynchrony between the genders, with males attaining their highest GSI values in January, while females...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auchenipterichthys longimanus; Hydrological seasons; Reproduction; Siluriformes.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400015

Reproductive biology and development of sexually dimorphic structures in Aphyocharax anisitsi (Ostariophysi: Characidae)
Provedor de dados: Neotropical Ichthyology
Autores: Gonçalves,Taís K.; Azevedo,Marco A.; Malabarba,Luiz R.; Fialho,Clarice B.
The reproductive period of Aphyocharax anisitsi is described through the analysis of specimens collected monthly from April 2001 to March 2002 in the arroio do Salso (3022'27"S, 5502'06"W), Rosário do Sul, Rio Grande do Sul, Brazil. The monthly variation of the Gonadosomatic Index mean (GSI) of both males and females allowed the recognition of a defined seasonal reproductive period occurring between September and February, showing a positive correlation with temperature and day-length. Absolute fecundity was 344.8 oocytes and relative fecundity 0.68 oocytes per mg of body weight. Absolute fecundity was correlated with standard length and total body weight. It was possible to identify two categories of males through the analysis of the number of rays...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fin hooks; Gill gland; Gonadosomatic index; Reproduction.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300012

Biology and ecomorphology of stream fishes from the rio Mogi-Guaçu basin, Southeastern Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Ferreira,Katiane M.
The córrego Paulicéia is a direct tributary of the rio Mogi-Guaçu, located in Santa Rita do Passa Quatro, State of São Paulo, Southeastern Brazil. This stream runs inside a savannah-like (cerrado) environment and it associated vegetation. Biological and ecomorphological aspects of its fish community were studied in three stretches of the stream, denominated herein as the upper, middle and lower courses. The fish fauna recorded in this study consisted of 15 species, belonging to five orders and nine families, based in a total of 715 collected individuals representing 1,450 kg of biomass. The most important abiotic factors related to the occurrence and distribution of the fish fauna were the substrate, current speed, and presence or absence of riparian...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Trophic ecology; Reproduction; Upper Paraná basin; Cerrado Biome.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300012

Ecology of Phallotorynus pankalos (Cyprinodontiformes: Poeciliidae) in a first-order stream of the upper Paraná Basin
Provedor de dados: Neotropical Ichthyology
Autores: Súarez,Yzel R.; Silva,João Paulo da; Vasconcelos,Lilian P.; Antonialli-Júnior,William Fernando.
Some aspects of the population ecology of Phallotorynus pankalos in a first-order stream of the Iguatemi River Basin are described based on samples taken from March/2007 to February/2008. A total of 2680 individuals, including 948 males and 1732 females was collected. Adult females are larger than males; theirs mean fecundity was estimated as 6.5 embryos/female. There was a strong correlation between standard length and ovary weight, relative ovary weight, and number of embryos. The size of the first maturation of 50% of female population was estimated as 18.24 mm of standard lenght. High female mortality was observed after the first reproduction and sex ratio presents seasonal variation with higher female proportion in the winter.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fecundity; Iguatemi River Basin; Population ecology; Reproduction; Stream fish.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100007

Influence of a large dam and importance of an undammed tributary on the reproductive ecology of the threatened fish matrinxã Brycon orthotaenia Günther, 1864 (Characiformes: Bryconidae) in southeastern Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Nunes,Diego Mendes Ferreira; Magalhães,André Lincoln Barroso; Weber,André Alberto; Gomes,Rafael Zeferino; Normando,Felipe Talin; Santiago,Kleber Biana; Rizzo,Elizete; Bazzoli,Nilo.
A total of 312 adults of matrinxã were captured bimonthly, between 2011-2012, in two sites of the rio São Francisco: immediately downstream of the Três Marias Dam (site 1) and in the confluence with the rio Abaeté (site 2). Specimens of Brycon orthotaenia from site 2 presented higher values of total length (32.24 ± 5.70 cm for females and 26.64 ± 3.79 cm for males) and body weight (506.66 ± 332.17 g for females and 267.36 ± 145.84 g for males), when compared with the site 1. In site 2 was registered the highest GSI means (9.97 ± 2.96 for females and 0.93 ± 0.52 for males), compared with the site 1 means. Reproduction period occurred from October to February. Unlike site 2, no spawned females or spent males were captured in site 1. Significant differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Gonadosomatic index; Neotropical fish; Migratory fish; Reproduction.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200317

Reproductive biology of the peacock bass Cichla piquiti (Perciformes: Cichlidae), an exotic species in a Neotropical reservoir
Provedor de dados: Neotropical Ichthyology
Autores: Vieira,Augusto B. C.; Salvador-Jr.,Luiz F.; Melo,Rafael M. C.; Santos,Gilmar B.; Bazzoli,Nilo.
To analyze the reproductive biology of the peacock bass Cichla piquiti, 361 specimens were collected bimonthly in the Itumbiara Reservoir, southeast Brazil, from December 2004 to November 2005. Males and females in reproductive activity occurred during almost the entire year, with reproductive peak occurring before the beginning of the rains when the water temperature remained low, indicating that these environmental variables do not directly influence in the reproduction of C. piquiti. The long reproductive period, partially spent ovaries contained postovulatory follicles and oocytes in all developmental stages, indicate asynchronous development of oocytes and multiple spawning. The mean total lengthand body weigth were, respectively, 38.2 ± 7 cm and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Multiple spawning; Body condition; Phenotypic plasticity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400024

Zygoparity in Characidae - the first case of internal fertilization in the teleost cohort Otomorpha
Provedor de dados: Neotropical Ichthyology
Autores: Fukakusa,Clayton Kunio; Mazzoni,Talita Sarah; Malabarba,Luiz Roberto.
Abstract Most teleosts are externally fertilizing, with internal fertilization occurring as a relatively rare event. Until now, Euteleosteomorpha is the only teleost cohort known to undergo internal fertilization. In the teleost cohort Otomorpha, it has been recorded the presence of sperm in the ovaries of some species of Characiformes and Siluriformes, but no fertilized eggs have been found so far in the female reproductive tract. It has been presumed that oocytes can be released into the water with associated spermatozoa and only there becomes fertilized, and the term insemination has been used to characterize the strategy adopted by these fish. Here, we present the discovery of the first case of internal fertilization in the teleost cohort Otomorpha, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characiformes; Insemination; Ostariophysi; Reproduction; Spawning.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100209

Temporal variability of fish larvae assemblages: influence of natural and anthropogenic disturbances
Provedor de dados: Neotropical Ichthyology
Autores: Reynalte-Tataje,David A.; Zaniboni-Filho,Evoy; Bialetzki,Andrea; Agostinho,Angelo A.
Natural and induced disturbances greatly influence the temporal distribution of ichthyoplankton abundance. This study assesses and compares the temporal variability of fish larvae assemblages in controlled and free environments to determine the influence of environment variables on the main taxa in these systems. The study was conducted at the Chapecó (without dam impact) and Ligeiro (with dam impact) river mouths, which are located in the upper Uruguay River. Samples were made between October 2001 and March 2004 during three reproductive periods. The larvae assemblages were composed of small and medium-sized Characiformes and Siluriformes. The variation in the distribution of larvae was mainly temporal (&gt;85%). When the three reproductive periods were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dams; Environmental variables; Ichthyoplankton; Reproduction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400017

Morphological analysis of the oviduct, oviducal gland and isthmus of the blue shark Prionace glauca (Linnaeus, 1758) (Elasmobranchii: Carcharhiniformes)
Provedor de dados: Neotropical Ichthyology
Autores: Rangel,Bianca S.; Bruno,Carlos E. Malavasi; Salmon,Thierry; Ciena,Adriano P.; Miglino,Maria A.; Amorim,Alberto F.; Rici,Rose E. G.
ABSTRACT Oviducal gland present in elasmobranchs is correlated to the organism's reproductive strategy, and its functions are to produce mucus, to form the egg's tertiary envelope and to store sperm. The gland contains four zones: club, papillary,bafﬂe and terminal. The structures of the oviduct, oviducal gland and isthmus of blue shark Prionace glauca were described using macroscopic, light microscopy and scanning electron microscopy techniques. The epithelium of the oviduct and isthmus is folded and is a simple, columnar, ciliated lining epithelium with glandular cells. In the oviducal gland, the lining tissues in the four zones are similar to the oviduct and isthmus lining. The terminal zone shows the presence of sperm in the lumen of the secretory...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cartilaginous fish; Electron microscopy; Nidamental gland; Reproduction; Shell gland.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000400663

Reproductive biology of a population of Gymnotus aff.carapo (Teleostei: Gymnotidae) from southern Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Cognato,Diego de Paula; Fialho,Clarice Bernhardt.
The reproductive period and its relation with somatic and abiotic factors, the relative and absolute fecundity, spawning type, length of first maturation and sex ratio is describe for Gymnotus aff.carapo from a small lake at Itapuã State Park, Rio Grande do Sul, Brazil. Gymnotus aff. carapo presents a relatively long reproductive cycle extending from November/2003 to March/2004. Decreases in water conductivity and increases in dissolved oxygen are correlated with increased gonadal development in males. In females, seasonal increases in temperature and photoperiod and decreases in dissolved oxygen are correlated with increased gonadal development. The mean absolute fecundity was 915.3 oocytes, and mean relative fecundity 0.20 oocytes/mg body weight. Egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gymnotiformes; Eletric fishes; Reproduction; Neotropical.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300005

Reproductive biology of Menticirrhus littoralis in southern Brazil (Actinopterygii: Perciformes: Sciaenidae)
Provedor de dados: Neotropical Ichthyology
Autores: Braun,Aloisio Sirangelo; Fontoura,Nelson Ferreira.
Menticirrhus littoralis is an important sport and commercial fish species in southern Brazil. This paper aims to analyze the reproductive biology of the species in Rio Grande do Sul coastal waters. Captures were carried out at Cidreira's fishing pier (30º 08' S; 50º 11' W) located on the Northern Coast of Rio Grande do Sul, where sport-fishing takes place throughout the year. Sport fishermen using hook-and-line with different hook sizes and varied baits exclusively made the captures. A total of 807 individuals were obtained from June 1997 to May 1998. Sexual proportion was 0.67 female for each male (323 females and 484 males; chi2c = 32.120; DF=1; P&lt;0.001). The smallest individual (total length) for captured animals was a male of 13 cm whereas the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Rio Grande do Sul; First maturation; Gonadosomatic index.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000100005

Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae): Implications for the conservation of this species
Provedor de dados: Neotropical Ichthyology
Autores: Honji,Renato M.; Mello,Paulo H.; Araújo,Bruno C.; Rodrigues-Filho,Jandyr A.; Hilsdorf,Alexandre W. S.; Moreira,Renata G.
Artificial reproduction and gamete fertilization were evaluated in Salminus hilarii wild and domesticated broodstocks. Wild and domesticated broodstocks were artificially induced to reproduction using a carp pituitary treatment. Four groups were considered: Group 1 (G1), fish caught in the wild maintained for three years in the same conditions as the domesticated broodstocks and spawned naturally; Group 2 (G2), broodstock born and raised in captivity and spawned naturally; Group 3 (G3), wild broodstocks, which were manually stripped for gamete collection and dry fertilization; and Group 4 (G4), domesticated males and females, also manually stripped. Oocytes, eggs, and larvae were sampled at different time intervals throughout embryonic development. Yolk...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Early development; Growth; Reproduction; Tabarana.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200014

Reproductive period and fecundity of Serrapinnus piaba (Characidae: Cheirodontinae) from the rio Ceará Mirim, Rio Grande do Norte, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Silvano,Jacira; Oliveira,Cristina L. C.; Fialho,Clarice B.; Gurgel,Hélio C. B.
Specimens of Serrapinnus piaba were collected monthly from April 2001 to April 2002 in the rio Ceará Mirim, Rio Grande do Norte State, Brazil. The reproductive period, determined through the monthly variation of the gonadosomatic index (GSI) and maturation stages, occurred from January to April. Non-parametric Spearman test was performed in order to test correlation of monthly GSI variation in males and females with water temperature, rainfall and day length. Rainfall and Temperature were correlated with GSI variation in females only and day length showed a negative correlation with GSI variation of males only. It was verified the presence of hooks on the anal fin of mature and maturing males along all the period of study. The absolute fecundity mean was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Fin hooks; Neotropical; Cheirodontini.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252003000100007

Vitamin E and reduced glutathione in Prochilodus lineatus (curimba) semen cryopreservation (Characiformes: Prochilodontidae)
Provedor de dados: Neotropical Ichthyology
Autores: Paula,Daniella A. J.; Andrade,Estefânia S.; Murgas,Luis D. S.; Felizardo,Viviane O.; Winkaler,Elissandra U.; Zeviani,Walmes; Freitas,Rilke T. F.
This study investigated the addition of antioxidants vitamin E and reduced glutathione on curimba (Prochilodus lineatus) semen cryopreservation and compared sodium bicarbonate solution and distilled water as activators. The experiment was conducted at the environmental station of CEMIG, in Itutinga-MG, Brazil, between December/2009 and January/2010. Semen samples (n = 7) with semen motility above 80% were diluted in cryoprotectant solutions composed of 10% methanol, 15% lactose and containing different concentrations of antioxidants: 50 (VE50), 100 (VE100) and 250 (VE250) µM of vitamin E, and 0.5 (RG0.5), 1.0 (RG1.0) and 1.5 (RG1.5) mM of reduced glutathione. A solution without antioxidants was used as a control. The semen was diluted at a ratio of 1:4...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidants; Fertilization; Freezing; Reproduction; Sperm motility.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300020

Can weight/length relationship predict size at first maturity? A case study with two species of Characidae
Provedor de dados: Neotropical Ichthyology
Autores: Fontoura,Nelson F.; Jesus,Anamélia S.; Larre,Gabriel G.; Porto,Juliana R.
A weight/length relationship was established for Astyanax jacuhiensis (Cope, 1894) (n = 370) and Cheirodon ibicuhiensis Eigenmann, 1915 (n = 701), from samples taken monthly in Fortaleza Lagoon, Cidreira, Rio Grande do Sul, from December 1991 through November 1992. Both species showed a polyphasic allometric growth pattern, each stanza described by an independent power equation controlled by a switch function. For C. ibicuhiensis, this change in the growth pattern occurred at 2.948 cm standard length (SL), close to published sizes for the attainment of female maturity. The change in the growth pattern of A. jacuhiensis (SL = 3.481 cm) was below the predicted size at first maturity, and merits further investigation. Although not conclusive, our data suggest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Polyphasic growth; Growth stanza; Reproduction; Fish.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400013

Diet and food consumption of the pearl cichlid Geophagus brasiliensis (Teleostei: Cichlidae): relationships with gender and sexual maturity
Provedor de dados: Neotropical Ichthyology
Autores: Bastos,Rodrigo F.; Condini,Mário V.; Varela Junior,Antonio S.; Garcia,Alexandre M.
Despite the importance of the pearl cichlid Geophagus brasiliensis for the aquarium fish trade worldwide and its wide distribution, many aspects of its biology, such as the relationships between its feeding ecology and reproductive behavior, are not fully understood in natural conditions on its native habitat. In this paper, we investigated its diet focusing on how differences in diet and food consumption are related to differences in gender and sexual maturity. The digestive tract of each individual was dissected and had its content analyzed, whereas each gonad was microscopically analyzed to determine gender (male/female) and sexual maturity (immature/mature). A total of 28 females and 31 males were analyzed. Mature individuals were more common than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Parental care; Patos-Mirim lagoon complex; Reproduction.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400013

Sexual development and reproductive pattern of the Mutton hamlet, Alphestes afer (Teleostei: Epinephelidae): a dyandric, hermaphroditic reef fish
Provedor de dados: Neotropical Ichthyology
Autores: Marques,Simone; Ferreira,Beatrice Padovani.
There is little knowledge on the reproduction of the genus Alphestes. The reproduction of the Mutton hamlet, Alphestes afer, sampled in Pernambuco reefs (Brazil) was studied based on macroscopic analysis during reproductive period and histological analysis of gonad material from March 2008 to October 2009. This study showed that A. afer is a diandric, protogynous hermaphrodite. Sex change followed protogynous mode in two pathways: primary males formed from immature female individuals or secondary males formed from resting, ripe or spent female individuals. The numerical distribution of gonad classes by size indicated that females from 11-18 cm L T were immature while females from 16-25 cm L T and males from 12-22 cm L T were in various stages of gonadal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Juvenile sex change; Protogynous hermaphrodite; Reproduction.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300008

Reproductive biology of Plagioscion magdalenae (Teleostei: Sciaenidae) (Steindachner, 1878) in the bay of Marajo, Amazon Estuary, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Santos,Nayara Barbosa; Rocha,Rossineide Martins da; Fredóu,Flávia Lucena.
Plagioscion magdalenae (pacora) is a commercially important benthopelagic sciaenid and widely distributed in the Amazon River basin. The present study describes the reproductive biology of this species in the bay of Marajo, Amazon Estuary, Brazil. The gonadal development stage, age and size at first sexual maturity (L50), sex ratio, and reproductive strategy were determined. The data were collected bi-monthly from December 2005 to October 2006. A total of 251 specimens were examined, with the total length (TL) ranging between 220 and 590 mm. The weight-length relationship for females, males and grouped sexes was highly significant, showing a positive allometry. The L50 was of 279 mm for grouped sexes, with 305 mm and 269 mm TL for females and males...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Amazon; Length maturity; Sexual proportion.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200012

Seasonal analysis of condition, biochemical and bioenergetic indices of females of Brazilian flathead, Percophis brasiliensis
Provedor de dados: Neotropical Ichthyology
Autores: Rodrigues,Karina A.; Macchi,Gustavo J.; Massa,Agueda; Militelli,María I.
Percophis brasiliensis is a demersal species that constitutes an important resource of Argentine coastal fisheries. Nevertheless, information about bioenergetic dynamic of reproduction has not been reported. Therefore, seasonal variations of condition factors, biochemical composition and energy density of different tissues were analyzed in order to determine the strategy of energy allocation during the reproductive cycle of this species. Condition indices (hepatosomatic and K) showed a seasonal pattern opposite to that observed for gonadosomatic index, which was characterized by higher values during the reproductive period (spring-summer), decreasing at the end of spawning. Biochemical composition of different tissues also showed a clearly seasonality...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical composition; Condition; Energy density; Reproduction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100153

Oocyte development and ovarian maturation of the black triggerfish, Melichthys niger(Actinopterygii: Balistidae) in São Pedro e São Paulo Archipelago, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Branco,Ilka S. L.; Viana,Danielle L.; Félix,Renata T. S.; Véras,Dráusio P.; Hazin,Fábio H. V.
The oogenesis is a key stage in the reproductive development of an organism, which can be best understood from histological analysis of ovaries in different maturity stages. In order to provide information on the reproductive biology of the black triggerfish, M. niger, in particular on its oogenesis process, this study aimed at identifying and characterizing the oocyte development stages and its organization within the different stages of ovarian maturation based on specimens from São Pedro e São Paulo Archipelago. In this present report, a number of 294 ovaries were histologically analyzed. It was verified that they are composed of ovigerous lamellae containing oocytes at different development stages. Five different stages of oogenesis were identified:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histology; Oogenesis; Reef fish; Reproduction; Vitellogenesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300597

Reproductive biology of the eyespot skate Atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the Southwestern Atlantic Ocean (34ºS - 42ºS)
Provedor de dados: Neotropical Ichthyology
Autores: Wehitt,Anahí; Colonello,Jorge H.; Macchi,Gustavo J.; Galíndez,Elena J.
ABSTRACT Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a by-catch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle of this species were analyzed, with samples collected between 34ºS and 42ºS. The size range was 190 to 674 mm total length (TL) for males and 135 to 709 mm TL for females. Sexual dimorphism between the relationships TL - disc width and TL - total weight was found, with females wider and heavier than males. The mean size at maturity for males was estimated in 530 mm TL and for females in 570 mm TL. The gonadosomatic index (GSI) in mature females varied seasonally and showed the highest value in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arhynchobatidae; Dimorphism; Elasmobranchs; Maturity; Reproduction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200207

Spawning areas, dispersion and microhabitats of fish larvae in the Anavilhanas Ecological Station, rio Negro, Amazonas State, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Oliveira,Edinbergh C. de; Ferreira,Efrem J. G.
The abundance and distribution of ichthyoplankton and their relationships to current velocity, temperature, dissolved oxygen, pH and electrical conductivity of the water in the Anavilhanas Ecological Station, Negro River, Amazonas State, Brazil, were analyzed. Preferred microhabitats for spawning, dispersion and nursery were also verified. Sampling was undertaken during the falling water period of 2001 and the rising water period of 2002, in a section of 100 km subdivided into 5 subsections, with a total of 20 stations (5 beaches, 5 ravines, 5 channels, and 5 lake channels) at night and during the day at the surface and at the bottom. 647 eggs and 4,187 larvae were captured, belonging to 10 families and four orders: Characiformes (6), Siluriformes (2),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyoplankton; Black water; Reproduction; Protected Areas; Amazon.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400003

Population dynamics of Prochilodus nigricans (Characiformes: Prochilodontidae) in the Putumayo River
Provedor de dados: Neotropical Ichthyology
Autores: Bonilla-Castillo,César A.; Córdoba,Edwin Agudelo; Gómez,Guber; Duponchelle,Fabrice.
ABSTRACT The black prochilodus (Prochilodus nigricans) is one of the most landed scaled fish species of the middle and upper parts of the Putumayo River, in the tri-national area between Colombia, Ecuador and Peru. Despite its importance, biological information about this species is too scant to guide fisheries management in this portion of the Colombian Amazon. In this study, 10884 individuals were sampled in the fish markets of Puerto Leguízamo between 2009 and 2017. This sampling was used to document reproductive patterns, but also growth and mortality parameters from length frequency distributions. The size at which all fish were mature was 22 cm Ls, which should be the established as the minimum size of capture to ensure that all fish have had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black prochilodus; Colombia; Growth; Mortality; Reproduction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200212

Population structure and reproductive behavior of Sinaloa cichlid Cichlasoma beani (Jordan, 1889) in a tropical reservoir
Provedor de dados: Neotropical Ichthyology
Autores: García-Lizárraga,Melgen A.; Soto-Franco,Francisco Enrique; Velazco-Arce,Javier Marcial de Jesús Ruiz; Velázquez-Abunader,José Iván; Ramírez-Pérez,Jorge Saúl; Peña-Messina,Emilio.
The population structure and reproductive condition of the Sinaloa cichlid Cichlasoma beani from samples obtained from June 2000 to July 2001 were determined. Samples in the first week each month from the largest trader of tilapia in the Aguamilpa Reservoir in Mexico and were caught in gillnets (9.6 and 11.4 cm stretch-mesh size). Of 596 specimens, there were 427 males and 169 females; monthly sex ratio, frequency of lengths by the multinomial distribution, timing of reproduction, condition index, and size at first maturity was determined. Differences in the sex ratio and monthly totals were significant, favoring males, except for September 2000 and March 2001. From one (August 2000) to three modal groups (July 2000 and June 2001) were identified by size....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cichlidae; Condition index; Length at maturity; Length frequency; Reproduction.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300012

Infestation pattern and parasitic castration of the crustacean Riggia paranensis (Crustacea: Cymothoidea) on the fresh water fish Cyphocharax gilbert (Teleostei: Curimatidae)
Provedor de dados: Neotropical Ichthyology
Autores: Azevedo,Juliana de Souza; Silva,Leonardo Gomes da; Bizerri,Carlos Roberto Silveira Fontenelle; Dansa-Petretski,Marilvia Alencar; Lima,Neuza Rejane Wille.
Cyphocharax gilbert infested by Riggia paranensis shows parasitic castration. The prevalence of parasitism in C. gilbert varied among different environments, being higher in the middle rio Itabapoana. Fish were collected monthly using two cast nets (thrown 30 times during the day) and gillnets kept in the river during 12 hour, from sunset to sunrise, between September 1997 and August 2000. Infestation pattern was investigated on 1358 specimens. Most of them were infested (57.9%), with one or two parasites; the majority (62.9%) was collected during the rainy season (spring-summer). The parasite did not show preference for sex or size of hosts. A total of 91.5% of the 511 examined parasites had a body size that represented 10.1% to 20% of host standard...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body size; Prevalence of parasitism; Parasitic castration; Reproduction.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300008

Reproduction of Brevoortia aurea (Spix &amp;amp; Agassiz, 1829) (Actinopterygii: Clupeidae) in the Mar Chiquita Coastal Lagoon, Buenos Aires, Argentina
Provedor de dados: Neotropical Ichthyology
Autores: Lajud,Nicolás Agustín; Astarloa,Juan Martín Díaz de; González-Castro,Mariano.
ABSTRACT Reproductive biology of the Brazilian menhaden, Brevoortia aurea (Clupeiformes), was studied in Mar Chiquita Coastal Lagoon. Its abundance was analysed in relation to environmental variables, and the main biological-reproductive parameters were estimated: size at first maturity, batch and relative fecundity, frequency distribution of oocyte diameters and gonadosomatic index (GSI). Moreover, its reproductive cycle was analysed histologically. Samples were collected from May 2012 to April 2013. Once the spawning period was detected, extra samples were added (October and November 2013). The specimens were caught with gillnets, at a distance of 2,300 meters from the mouth of the lagoon. The highest abundances were observed in the months of October and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clupeiformes; Multiple spawner; Pelagic; Reproduction.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100222

Fish movement in an Atlantic Forest stream
Provedor de dados: Neotropical Ichthyology
Autores: Mazzoni,Rosana; Pinto,Miriam Plaza; Iglesias-Rios,Ricardo; Costa,Raquel.
ABSTRACT Given the importance of fish movement to the dynamics and maintenance of stream dwelling fish communities from the Atlantic Forest, we analysed patterns of fish movement in a coastal stream from Southeastern Brazil, using mark-recapture technique. Displacement distance of each species were presented and discussed considering seasonal (rainy and dry) and body size patterns. We marked 10 species along the stream and recaptured 440 (34.6%) of the 1,270 marked fishes. The species with significant number of upstream moving individuals were Astyanax janeiroensis, Characidium interruptum, Astyanax hastatus, Parotocinclus maculicauda and Awaous tajasica. Only Pimelodella lateristriga presented significant differences between resident and moving...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal stream; Migration; Reproduction; Stream dwelling fish.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100206

Phenotypic plasticity in fish life-history traits in two neotropical reservoirs: Petit-Saut Reservoir in French Guiana and Brokopondo Reservoir in Suriname
Provedor de dados: Neotropical Ichthyology
Autores: Mérona,Bernard de; Mol,Jan; Vigouroux,Régis; Chaves,Paulo de Tarso.
Fish species are known for their large phenotypic plasticity in life-history traits in relation to environmental characteristics. Plasticity allows species to increase their fitness in a given environment. Here we examined the life-history response of fish species after an abrupt change in their environment caused by the damming of rivers. Two reservoirs of different age, both situated on the Guiana Shield, were investigated: the young Petit-Saut Reservoir in French Guiana (14 years) and the much older Brokopondo Reservoir in Suriname (44 years). Six life-history traits in 14 fish species were studied and compared to their value in the Sinnamary River prior to the completion of Petit-Saut Reservoir. The traits analyzed were maximum length, absolute and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: South America; Reproduction; Strategy; Tactic; Fecundity; Oocyte size.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400018

Reproductive biology of the skates Sympterygia acuta Garman, 1877 and S. bonapartii Müller &amp;amp; Henle, 1841 (Chondrichthyes: Rajoidei) in south Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Basallo,Alexander; Oddone,Maria Cristina.
The present study analyzed the sexual development, sizes at maturity and morphometric relationships for both sexes of Sympterygia acutaand S. bonapartii, endemic of south-western Atlantic Ocean. The examined specimens were obtained through research cruises and commercial fishing trips, during 2011 and 2012, along the southern Brazilian coast, in latitudes ranging from 34°28'S to 31°29'S and at depths between 15 and 142 m. Significant differences (p&lt;0.05) in S. bonapartii and in S acutabetween sexes for the relationships total length (cm) - disc width (cm) and total length - total/eviscerated weight (g) respectively, demonstrated sexual dimorphism during the development in both species. The estimated size at maturity for males and females, respectively,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endemic; Maturity; Morphometric; Oviparity; Reproduction.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400771

Morphological analysis and description of the ovaries of female silky sharks, Carcharhinus falciformis (Müller &amp;amp; Henle, 1839)
Provedor de dados: Neotropical Ichthyology
Autores: Rêgo,Mariana G.; Hazin,Fábio H. V.; Evêncio Neto,Joaquim; Oliveira,P. G. V.; Soares,Maria Goretti; Torres,Keilla Regina L. S.; Lana,Fernanda O.; Roque,Pollyana C. G.; Santos,Natália L.; Coelho,Rui.
This work aims to study the female reproductive tract of silky sharks, Carcharhinus falciformis, captured in the South and Equatorial Atlantic Ocean. Samples were collected between January 2008 and March 2010 through oceanic commercial vessels that targeted tuna and swordfish, with a total of 17 females collected. The methodologies followed for analyzing the ovaries of those females included both macroscopic and histological analysis. Macroscopically, it was possible to determine that the ovaries on these sharks is suspended by mesenteries in the anterior section of the body cavity, heavily irrigated by blood vessels, and contains a wide range of oocytes. Ovaries were found in three distinct maturational stages: Stage I (Immature), Stage II (Maturing) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elasmobranchs; Histology; Maturity; Ovary; Reproduction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400815

A honeymoon in Brazil: the spawning behavior of an exotic reef fish in the western south Atlantic
Provedor de dados: Neotropical Ichthyology
Autores: Luiz,Osmar J; Sazima,Ivan; Waib,Luis F; Ferreira,Carlos Eduardo L.
The reproductive strategies of surgeonfishes of the genus Acanthurus are well known for all Atlantic species except the Monrovia doctorfish, Acanthurus monroviae, an eastern Atlantic surgeonfish whose biology remains largely unknown. We provide here the first account on the spawning behavior of A. monroviae, an exotic fish on rocky reefs of southeastern Brazilian coast.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Acanthurus monroviae; Acanthuridae; Reproduction; Laje de Santos; Rocky reef.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200016

Reproductive and population dynamics of the Bay whiff Citharichthys spilopterus Günther, 1862 (Pleuronectiformes: Paralichthyidae) in the Mamanguá Inlet, Rio de Janeiro, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Dias,June Ferraz; Fiadi,Carla Bertolucci; Silbiger,Helcy Lylian Nogueira; Soares,Lucy Satiko Hashimoto.
Bay whiffs, Citharichthys spilopterus, were sampled in Mamanguá Inlet between March 1990 and March 1992 for evaluation of its reproductive dynamic. Bay whiffs presented a crescent gradient of abundance from the deepest to the shallowest stations. The mean total length by oceanographic station showed a clear tendency of a relationship between bigger sizes and higher depths. Males predominated along the studied period and on the smallest length groups. Higher values of alometric condition factor, gonadosomatic relationship and spawning stage of maturity indicated a higher degree of development of the gonads on March and November. Histological analysis showed spawning females in March and May 1990 in the stations closer to the mouth of the Inlet, and spawned...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Population structure; Reproduction; Gonadosomatic relationship; Gonadal maturation; Southeast Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300009

Change in size-at-maturity of the yellownose skate Dipturus chilensis (Guichenot, 1848) (Elasmobranchii: Rajidae) in the SW Atlantic
Provedor de dados: Neotropical Ichthyology
Autores: Paesch,Laura; Oddone,María C.
A total of 3518 specimens (1607 males, 1911 females) of Dipturus chilensis were sampled. Males ranged from 44.0 to 99.0 cm and females from 45.0 to 110.0 cm. Total length composition of the grouped catches differed significantly among sexes, with females being larger than males. The sex ratio favored the females. The total length at which 50% of the specimens were retained by the gear was 69.0 cm for the males and 73.0 cm for the females. A sub-sample of 124 specimens (48 males, 76 females) was analyzed for reproductive assessment. For the males, size at 50% maturity was estimated at 78.5 cm, while for the females this parameter was estimated at 81.4 cm. Preliminary observations on the description of the egg capsules are also provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clasper; Fishery-dependent samples; Rajid; Reproduction; Size composition.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200009

Short-term changes in energy allocation by Hemiodontidae fish after the construction of a large reservoir (Lajeado Dam, Tocantins River)
Provedor de dados: Neotropical Ichthyology
Autores: Medeiros,Estevão Rodrigues; Pelicice,Fernando Mayer; Agostinho,Carlos Sergio; Marques,Elineide Eugênio.
The present study investigated energy allocation patterns in three fish species from the family Hemiodontidae (Argonectes robertsi, Hemiodus microlepis, and Hemiodus unimaculatus), before and after the construction of Lajeado Dam, Tocantins River, Amazon basin. Changes in the use of energy (between somatic and reproductive processes) were indirectly evaluated by means of temporal variations in fish body condition, feeding activity, visceral fat storage, and reproductive effort. Fish were collected from October 1999 to September 2004, in periods that preceded and followed the construction of the dam. We recorded significant changes in all ecological traits for the three analyzed species (for males and females). In general, there was an intense reduction in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body condition; Colonization; Fitness; Reproduction; River regulation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300649

Seasonal and spatial distributions in relation to reproduction of blowflies (Diptera, Calliphoridae) in Hokkaido, Japan
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: IWASA, Mitsuhiro; MATSUSHIMA, Kana; INOUE, Ayako; 岩佐, 光啓.
Seasonal and spatial distributions of blowflies in relation to reproduction were investigated by baited traps in eight sites from lowland to high mountainous areas in Hokkaido, Japan. A total of 6,571 blowflies consisting of seven species in three genera was collected. The most predominant species was Calliphora vomitoria (Linnaeus) (5,946 flies, 90.5%), followed by C. nigribarbis Vollenhoven (537 flies, 8.2%). The remaining five species (Triceratopyga calliphoroides Rohdendorf, C. vicina Robineau-Desvoidy, C. loewi Enderlein, C. subalpina (Ringdahl), and Aldrichina grahami (Aldrich) were few in numbers. Calliphora vomitoria had the highest peak in autumn (October) in lowland to upland areas (70 m, 400 m, and 500 m), and it was also abundant from July to...
Palavras-chave: Blowflies; Distribution; Emergence; Hokkaido; Life history; Reproduction.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3843

A long-term study of small mammal populations in a Quercus dentata forest surrounded by agricultural lands in Tokachi，Hokkaido : I．Yearly changes in fauna and populations
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Onoyama, Keiichi; 小野山, 敬一.
Palavras-chave: Small mammals; Clethrionomys rufocanus bedfordiae; Yearly chenge; Population; Reproduction.
Ano: 1988
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1544

A Potential Use of Color Ultrasound as a Tool for Reproductive Management: New Observations Using Color Ultrasound Scanning that were not Possible with Imaging Only in Black and White
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: MIYAMOTO, Akio; SHIRASUNA, Koumei; HAYASHI, Ken-Go; KAMADA, Daichi; KAWASHIMA, Chiho; KANEKO, Etsushi; ACOSTA, Tomas J.; MATSUI, Motozumi; 宮本, 明夫; 白砂, 孔明; 川島, 千帆; 松井, 基純.
Ultrasonography (US) has been applied to the ovary and the uterus of domestic animals from the late 1980s, and established in 1990s as a practical tool for animal production. US made it possible to detect pregnancy at a very early stage and, most importantly, to observe the real-time dynamics of follicular development and hence the discovery of follicular waves. This has greatly contributed to our understanding of ovarian physiology and helped us to develop several "pin-point" protocols for hormonal treatment. While US may not seem to fit preconceived ideas of a "green" technology, it does not contravene environmental priorities, and it is non-invasive ("ethical") and non-hormonal ("clean"). Using the US technology that is now commercially available at a...
Palavras-chave: Color Doppler ultrasound; Blood flow; Ovary; Reproduction; Cow.
Ano: 2006
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2983

Estimation of Genetic Parameters for Weight, Reproduction, and Wool Traits of Suffolk Sheep
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: 中川, 智史; 鈴木, 三義; 山内, 和律; 山田, 渥.
滝川畜産試験場で1980年から1996年に集積された記録を用いて，サフォーク種の体重形質，繁殖形質，羊毛形質の遺伝的パラメータをREMLにより推定した．体重形質の直接遺伝率は日齢にともない増加し（0.15→0.31），母性遺伝率は日齢にともない減少した（0.24→0.09）．直接遺伝効果と母性遺伝効果間の相関は日齢にともない正から負へと変化した（0.21→−0.42）．繁殖形質の直接遺伝率はいずれも低い値であり（0.03〜0.18），羊毛形質はいずれも高い値であった（0.36〜0.60）．直接遺伝効果間の相関は，体重形質間（0.29〜0.92）と繁殖形質間（0.19〜0.88）で正の値，体重形質と繁殖形質間（−0.01〜0.57）ではほとんどが正の値であった．羊毛形質と体重形質および繁殖形質の間では幅広い範囲の値をとった（−0.28〜0.51）．
Palavras-chave: Genetic parameter; Weight; Reproduction; Wool; Suffolk.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2601

Etude comparative entre les paramètres de reproduction de deux espèces de &lt;Carangidae&gt; : &lt;Caranx crysos&gt; et &lt;Caranx rhonchus&gt; du golfe de Gabes
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Sley, A.; Jarboui, O.; Bouain, A.
Ce travail constitue une étude comparative entre les paramètres de reproduction de Caranx crysos et ceux de Caranx rhonchus du golfe de Gabès. Afin de déterminer la maturité sexuelle, le cycle sexuel et la période de ponte, les mensurations ont été relevées sur un échantillon de C. crysos composé de 1668 individus (95mm ≤ LT≤ 416 mm) et de 1313 individus de Caranx rhonchus (10mm≤LT≤306 mm). Il ressort de cette étude que Caranx rhonchus atteint sa maturité sexuelle (LT50% femelles = 182,09 mm et LT50% mâles = 182,2 mm) à une taille inférieure à celle estimée chez Caranx crysos (LT50% femelles = 259,79 mm et LT50% mâles = 245,88 mm). En outre, les variations mensuelles du Rapport Gonado-Somatique (RGS%), montre des cycles sexuels synchrones pour les mâles et...
Tipo: Journal Contribution
Palavras-chave: Spawning seasons; Reproduction.
Ano: 2013
URL: http://hdl.handle.net/1834/5902

Las rayas del género Psammobatis de la plataforma Argentina: biología y ecología
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Mabragaña, E.
Las rayas (Rajidae)conforman un grupo de peces cartilaginosos de hábitos bentónicos, presentes en casi todos los mares del mundo. En la plataforma continental argentina (PCA)han sido reconocidas 23 especies de rayas pertenecientes a 7 géneros (Atlántico SO). El género Psammobatis Günther, objeto del presente estudio, es endémico de Sudamérica y está compuesto de 8 especies. Dentro de las rayas de la PCA es el que mayores problemas taxonómicos ha tenido debido a su morfología y diversidad. Las características de historia de vida hacen que este grupo sea muy vulnerable a la explotación pesquera. Hasta cerca de una década atrás, en nuestro país las rayas eran capturadas incidentalmente, siendo descartadas o destinadas a la harina de pescado, pero en los...
Tipo: Theses and Dissertations
Palavras-chave: Abundance; Taxonomy; Identification keys; Geographical distribution; Reproduction; Trophic relationships; Stomach content; Taxonomy; Geographical distribution; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2007
URL: http://hdl.handle.net/1834/3130

Estudio de prolóculus de los foraminíferos bentónicos de la Provincia de Manabí, Ecuador
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Gualancañay, E.
El presente trabajo está basado en el estudio del prolóculus de los foraminíferos bentónicos de la plataforma continental superior interna de la Provincia de Manabí, la misma que incluye la zona de turbulencia. El objetivo principal fue el de llegar a establecer las fases de reproducción mediante el estudio del prolóculus de cada uno de los ejemplares analizados.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Foraminifera; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1989
URL: http://hdl.handle.net/1834/2148

Importancia de los lípidos en la reproducción y ontogenia del pez blanco de Pátzcuaro (Chirostoma estor estor)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Aparicio, B.
Para producir larvas de peces con buenos rendimientos, se deben conocer los requerimientos nutricionales de la especie, particularmente en los primeros estadios larvarios. Además, se sabe que la nutrición de los reproductores influye directamente en la calidad de las larvas debido, principalmente, a la cantidad y calidad de lípidos que son transferidos desde la gónada hacia los huevos. El objetivo de este trabajo fue analizar la composición de lípidos en huevos, embriones y larvas de pez blanco de Pátzcuaro (Chirostoma estor estor) con el fin de establecer las bases de los requerimientos nutricionales de lípidos durante el desarrollo larvario del pez blanco. También se determinaron los ácidos grasos en tejidos de reproductores (cerebro, gónada, hígado,...
Tipo: Theses and Dissertations
Palavras-chave: 1079; Lipids; Reproduction; Fish culture; Fish eggs; Embryos; Fish culture; Lipids; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4362; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/3465

Contribución al estudio biológico-pesquero del pez gallo, Callorhynchus callorhynchus (Linné, 1758) Berg, 1895, en el Golfo San Matías
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Di Giácomo, E.E.
Tipo: Theses and Dissertations
Palavras-chave: Taxonomy; Stock assessment; Population structure; Reproduction; Trophic relationships; Taxonomy; Stock assessment; Population structure; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1990
URL: http://hdl.handle.net/1834/4067

Etude de la dynamique des systèmes d’exploitations et de l’éco biologie de la reproduction, de trois Mugilidés : &lt;Mugil cephalus&gt; (Linnaeus, 1758),&lt; Liza aurata&gt; (Perugia, 1892) et&lt; Mugil capurrii&gt; (Risso, 1810), analyse de leurs stratégies d’occupations des secteurs littoraux mauritaniens et de leurs possibilités d’aménagement.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ould Mohamed Vall, M.
Résumé : En Mauritanie, un constat clair met en évidence une tendance de sur-exploitation « en série» des stocks à haute valeur, des Mugilidés; le mulet jaune premièrement, puis ensuite le mulet noir et le mulet doré (espèces pouvant être considérées de substitution). L’exploitation intensive du mulet jaune à partir de 1996 a conduit au ciblage du mulet noir à partir de 1998 et puis, plus récemment encore, celui du mulet doré en 2001. L’absence d’une gestion rationnelle risque de conduire, dans moins de sept ans à la quasi-disparition de ces ressources (logiquement renouvelables).  C’est dans ce contexte de baisses des rendements, auquel s’ajoute la dégradation des zones littorales par l’action anthropique sans cesse croissante, que ce travail a permis...
Tipo: Theses and Dissertations
Palavras-chave: Biology; Distribution; Ecological distribution; Exploitation; Abundance; Legislation; Reproduction; Stock identification; Zonal distribution; Distribution; Biology; Legislation; Reproduction.
Ano: 2004
URL: http://hdl.handle.net/1834/1226

Reproducción y fecundidad del surel (Trachurus picturatus australis)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Cassia, M.C.; de Ciechomski, J.D.
Studies on the sexual maturation on the jack mackerel in the area close to Mar del Plata were carried out throughout the whole year, 56 almost ripe females between 160 and 210 mm in total length and between 38 and 78 g is weight were taken into consideration for fecundity determinations. The most importante results obtained during these studies are the following: The gonad index was rather high and reached the value of 11.5.-The reproduction season is a rather one and the spawning occurs mainly in December and January.-It is assumed that a female of this species spawns once over a reproduction season, but shedding numerous batches of eggs in short intervals.-The lowest value found for the fecundity was 15.825 ovocites and the highest one was 82.892.-It is...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Mackerel fisheries; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 1980
URL: http://hdl.handle.net/1834/2064

Reproducción y anidación de E. imbricata en Cuba
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Moncada G., F.; Pérez P., C.; Nodarse A., G.; Elizalde R., S.; Rodríguez, A.M.; Meneses, A.
Se presenta la información sobre la reproducción de E. imbricata en aguas cubanas, que se obtuvo a partir de los animales muestreados durante las capturas históricas y los estudios de anidación.
Tipo: Journal Contribution
Palavras-chave: Turtle fisheries; Reproduction; Nesting; Reproduction; Nesting; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_5140.
Ano: 1998
URL: http://hdl.handle.net/1834/3983

Análisis de la distribución y dinámica poblacional de lenguados de la Provincia de Buenos Aires (Pisces, Bothidae)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Fabré, N.N.
Los lenguados constituyen un importante recurso pesquero en el Mar Argentino. Más que en los volúmenes desembarcados (9 .731 t en 1991), esta importancia se centra en su elevado valor de comercialización debido a la alta calidad de su carne. Atendiendo a los desembarques totales realizados en el Mercado de Concentración Pesquera de Mar del Plata, los lenguados ocupan el octavo lugar. Estos desembarques están compuestos principalmente por especies de porte mediano a grande pertenecientes al género Paralichthys, y por ejemplares de tamaño mediano o pequeño de las especies Xystreuris rasile, y en menor proporción, Paralichthys isosceles. Este recurso es explotado, en el sector bonaerense, por las flotas de rada o ría y costera, mientras que la flota de altura...
Tipo: Theses and Dissertations
Palavras-chave: Geographical distribution; Population dynamics; Population structure; Growth; Reproduction; Mortality; Environmental effects; Ecosystems; Marine fish.
Ano: 1992
URL: http://hdl.handle.net/1834/5158

Etude de la reproduction de "Patella caerulea" linnaeus, 1758 (mollusque, gasteropode) de la côte nord de la Tunisie
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Belkhodja, H.; Jaafoura, M..H.; Missaoui, H.; Romdhane, M.S.
Dans cette étude, nous nous sommes intéressés à la détermination des différents stades du développement gonadique chez le mollusque gastéropode: Patella caerulea prélevé au niveau de la station Canal de Bizerte située sur la côte nord de la Tunisie en nous basant sur les techniques d'histologie classique de la gonade. Cette étude s’est déroulée sur une période allant de mars 2006 à août 2007 et a porté sur 552 spécimens de longueur comprise entre 20,73 et 45,14 mm (± 4,59 mm). L’étude de la sex-ratio a montré une nette dominance des mâles par rapport aux femelles. L’activité gonadique a démarré en août/septembre pour les deux sexes. Chez les mâles, une émission principale des gamètes a eu lieu entre mai et août 2006 et entre avril et juillet 2007. Pour les...
Tipo: Journal Contribution
Palavras-chave: Molluscs; Reproduction.
Ano: 2010
URL: http://hdl.handle.net/1834/4697

Biología y ecología reproductiva de las especies del Género Bathyraja (Elasmobranchii, Rajidae) en la plataforma continental Argentina
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Scenna, L.B.
Se estudia la biología y ecología reproductiva de las ocho especies de Bathyraja presentes en la plataforma continental argentina (Atlántico S.O.), a través del análisis del tamaño corporal, las cápsulas de huevos, el desarrollo de los embriones, la talla de madurez sexual, las variaciones en las condiciones reproductivas, las áreas de puesta y la segregación espacial de los individuos. El material examinado provino de campañas de investigación llevadas a cabo por el Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) entre 34º40'S y 54º30'S, desde septiembre 2003 hasta octubre 2007. La información presentada en el trabajo demuestra que las especies del Género Bathyraja en la plataforma argentina maduran a una talla alta en relación a la Lt...
Tipo: Theses and Dissertations
Palavras-chave: Reproduction; Biogeography; Morphometry; Fish eggs; Sexual maturity; Spawning grounds; Marine fish; Rajidae; Marine environment.
Ano: 2011
URL: http://hdl.handle.net/1834/4776

Biologie et exploitation du poulpe Octopus vulgaris (Cuvier, 1797) des côtes mauritaniennes
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Dia, M.A.
L’étude porte sur l’exploitation, la biologie et la dynamique du poulpe (Octopus vulgaris, Cuvier) des eaux mauritaniennes. La répartition spatio-temporelle dans la région du Cap Blanc ne semble être liée ni à la taille, ni au sexe, mais varie au cours de l’année. L’analyse de l’état actuel de la pêcherie basée sur les congélateurs céphalopodiers met en évidence une augmentation de l’effort de pêche et la poursuite de chute des p.u.e. La composition des captures révèle une progression du pourcentage des individus de poids inférieur à 200 grammes (« poulpo »). L’étude biologique montre qu’il existe deux saisons de reproduction par an (mai-juillet et septembre-novembre) qui engendrent deux recrutements, l’un en mai et l’autre à partir de septembre. La...
Tipo: Theses and Dissertations
Palavras-chave: Reproduction; Common octopus; Population dynamics; Environnement; Dynamique de population; Exploitation; Environment; Poulpe; ZEE Mauritanienne; Distribution; Mauritanian EEZ; Biologie; Croissance; Growth; Octopus vulgaris; Biology; Octopus fisheries.
Ano: 1988
URL: http://hdl.handle.net/1834/675

Les perspectives du privé dans la gestion des ressources: contribution de GAIPES
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Coulibaly, M.
GAIPES
Tipo: Conference Material
Palavras-chave: Resource management; Fishery regulations; Reproduction; Fishing effort; Fishery products; Bilateral agreements; International cooperation; Research; Marketing; Fishing; Fishery products; Marketing; Resource management; Reproduction; Fishing effort; International cooperation; Research; Fishing; Http://aims.fao.org/aos/agrovoc/c_2941; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_16378; Http://aims.fao.org/aos/agrovoc/c_6513; Http://aims.fao.org/aos/agrovoc/c_26950.
Ano: 2004
URL: http://hdl.handle.net/1834/3674

Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Mármol-Rada, D.; Viloria-Maestre, E.; Blanco-Racedo, J.
The mullet Mugil incilis is one of the most important fish resources in the Ciénaga Grande de Santa Marta. Based on monitoring of  fishery  statistics  collected  in  the  periods  1994-1996  and  2000-2007  and  biological  aspects  of  the species between 2006 and 2007, we evaluated fishing effects on the reproductive biology of M. incilis. Fishery statistics revealed that catch and fish size declined with time. Peak spawning was observed to occur between November - December, when the gonadosomatic index and condition factor showed their maximum values, contrasting with water salinity that plunged in the rainy period. Male: female ratio was estimated as 1:3 after a sample of 1954 individuals, and mean maturity size (MMS) calculated as 23.8 cm total...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2010
URL: http://hdl.handle.net/1834/4017

Estudios sobre reproducción y fecundidad de la polaca (Micromesistius australis Norma 1937)en el Mar Argentino
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Sánchez, R.P.; de Ciechomski, J.D.; Acha, E.M.
An analysis is presented of reproduction aspects of Argentine Sea blue whiting. The species spawns in the study area mostly during August and September, although some spawners have been detected even in November. Total length at 50-per-cent maturity was 35,4 cm for the males and 38.0 for the females. Significant differences between the length of maturity for individuals of the continental shelf compared to those of the slope, have been obtained. The southern blue whiting is a discontinuous spawner, showing one annual reproduction peak. Fecundity was investigated on the basis of samples collected in 1978 by the RV"Walther Herwig" and "Shinkai Maru". A significant positive correlation was also observed at relating oocyte dry weight and gonad factor, whereas...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Sexual maturity; Stock assessment; Stock assessment; Reproduction; Fecundity; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1986
URL: http://hdl.handle.net/1834/2028

Investigación y manejo de praderas de luga roja en la XII Región
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ávila, M.; Cáceres, J.; Núñez, M.; Camus, P.; Pavez, H.; Cortés, H; González, J.; Tapia, C.; Mejías, P.; Cornejo, S.; Romo, H.; Candia, A.
El objetivo del proyecto es desarrollar un plan de manejo del recurso luga roja. Este objetivo se logra a través de los siguientes objetivos específicos: determinar el (los) períodos óptimos de cosecha para las praderas de la XII Región, que permitan maximizar la biomasa obtenida conservando la capacidad productiva del recurso; diseñar y evaluar estrategias de manejo del recurso en la XII Región.
Tipo: Report
Palavras-chave: Algae; Biomass; Reproduction; Resource management; Harvesting; Biomass; Algae; Reproduction; Resource management; Harvesting; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_3500.
Ano: 2004
URL: http://hdl.handle.net/1834/1736

Evaluación preliminar de especies de peces arrecifales marinos con potencial ornamental en el área de Santa Marta y Parque Nacional Natural Tayrona, Caribe colombiano
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Polanco F., A.; Acero P., A.; Santos-Acevedo, M.; Narváez, J. C.; Navas S., G. R.; Flórez, P.
Veintiuna especies de peces arrecifales frecuentes y abundantes en el área de Santa Marta y Parque Nacional Natural Tayrona (Caribe colombiano) ser identificaron como promisorias para el mercado de peces marinos ornamentales. La selección se basó en información secundaria y observaciones en campo y laboratorio, dando prioridad a especies o familias que han sido reproducidas existosamente en confinamiento y que según las observaciones se adaptan satisfactoriamente al cautiverio, con proyección a su futura reproducción, levantamiento y manutención en confinamiento. Así mismo, para algunas de ellas se obtuvieron datos importantes para su acoplamiento y manutención en acuario. Se proponen a Microspathodn crysurus, Coryphopterus personatus, Elacatinus...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Marine fishes.
Ano: 2011
URL: http://hdl.handle.net/1834/4406

Algunos aspectos de la biología reproductiva y comportamiento trófico de la corvina rubia (Micropogonias furnieri) en relación al frente salino del estuario del Río de la Plata.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Bava, J.; Jaureguizar, A.; Meijide, F.
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Reproduction; Brackishwater fish; Trophic relationships; Feeding behaviour; Reproduction.
Ano: 1996
URL: http://hdl.handle.net/1834/4005

Estrategia reproductiva de la saraca, Brazilian menhaden, Brevoortia aurea (Pisces: Clupeidae), en el estuario del Río de la Plata
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Acha, E.M.
The Brazilian menhaden, Brevoortia aurea, is the only species of genus Brevoortia in South American Atlantic waters, being abundant in the Rio de la Plata estuary.  The temporal and spatial reproductive pattern of this menhaden was analyzed in relation to the major hydrographic features of the region, and the reproductive biology was studied by using histological analysis of ovaries. B.aurea is a multiple spawner with indeterminate annual fecundity. Daily spawning activity was mostly in the afternoon (15:00 - 16:00),based on the incidence of females with both hydrated oocytes and postovulatory follicles. Spawning frequency, determined using the percentage of females with postovulatory follicles, was about 12.  during November.  At this frequency, each...
Tipo: Theses and Dissertations
Palavras-chave: Reproduction; Fecundity; Ovaries; Fish larvae; Eggs; Life history; Brackishwater fish; Spawning grounds; Spawning seasons; Estuaries; Estuaries; Ovaries; Eggs; Life history; Spawning grounds; Reproduction; Fecundity; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_12170; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1999
URL: http://hdl.handle.net/1834/1458

Diagnostic des pêcheries du poulpe (Octopus vulgaris)  dans les eaux sous juridiction sénégalaise: Rapport définitif
Provedor de dados: Ocean Docs: e-repository of  publications
Les seiches, poulpes, calmars et nautiles forment la Classe des Céphalopodes de l’Embranchement des  Mollusques de grande taille, exclusivement marins. Leur croissance est rapide, leur arrivée à la maturité sexuelle précoce et leur durée de vie courte. Le poulpe a une très large aire de distribution incluant les eaux maritimes tropicales. Elle abonde surtout en Méditerranée, dans les eaux japonaises (Océan Pacifique) et dans l’Atlantique Centre-Est qui  s’étend du Maroc à l’Angola.   La pêche du poulpe s’est développée au large du Sahara dans les années 1960. Son importance dans la zone du COPACE notamment, au Maroc, en Mauritanie et au Sénégal, s’expliquerait par la raréfaction de ses prédateurs potentiels (Serranidés, Sparidés).  Au  Sénégal, elle est...
Tipo: Working Paper
Palavras-chave: Cephalopod fisheries; Reproduction; Fishing gear; Fishery industry; Catching methods; Fishing nets; Season regulations; Fishing effort; Fishing rights; Fishery regulations; Living resources; Commercial legislation; Octopus fisheries; Fishery statistics.
Ano: 2009
URL: http://hdl.handle.net/1834/4573

Distribution spatiotemporelle de dizaines intérêt commercial dans ZEE mauritanienne.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Vally, Y.
Tipo: Theses and Dissertations
Palavras-chave: Temporal distribution; Reproduction; Commercial fisheries; Distribution.
Ano: 2012
URL: http://hdl.handle.net/1834/4988

Reproducción y fecundidad de la cherna americana (Epinephelus morio) en el Banco de Campeche, Mexico
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Giménez, E.; Moreno, V.J.; Burgos, R.; Alfonso, S.
La cherna americana o mero (Epinephelus mono), de la familia Serranidae, es la especie en explotación mas importante del Banco de Carnpeche, Mexico, por lo que el conocimiento de los aspectos relacionados con su reproducción, es importante para un manejo adecuado de la especie. Se determinó que la proporcion sexual (WH) vario con la talla de los ejemplares, presentando las mayores proporciones de hembras en la clase de talla de 30 cm (1:31.5). A partir de 10s 75 cm, la proporcion no fue significativamente diferente de 1:1. La talla a partir de la cual comenzó el cambio de sexo se observo entre 30 y 35 cm Lt. El contenido de la grasa mesenterial aumentó durante el otoño (septiembre, octubre, noviembre) y descendió durante el invierno (diciembre, enero,...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Sex ratio; Spawning; Spawning; Reproduction; Fecundity; Sex ratio; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_7014.
Ano: 2003
URL: http://hdl.handle.net/1834/1804

Estudio de algunos aspectos del ciclo vital de la merluza de cola Macruronus magellanicus, Lonnberg, 1907.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Giussi, A.R.
Long tailed hake Macruronus magellanicus, is a demersal fish,distributed in the SW Atlantic Ocean, in Malvinas Current waters,from 36° and 55°S, mainly between 50m and 200m depth. The species is also distributed in Chilenian waters in the Pacific Ocean, being caught in the Magellan Strait and the Beagle Channel. Age determination was estimated with the sagittae otoliths, in which only one ring is formed during the year. Growth parameters were calculated directly and with back calculated methodology, no differences were observed between the results. Differences in growth sexes were evident from 3 years old. The oldest age observed was 13. Different distributional areas of adults through out the year could suggest a migratory movement in northern waters of...
Tipo: Theses and Dissertations
Palavras-chave: Life cycle; Growth; Otoliths; Age determination; Reproduction; Population dynamics; Mortality; Population structure; Fishery surveys; Fishing grounds; Geographical distribution; Back calculation; Growth; Otoliths; Age determination; Population structure; Geographical distribution; Life cycle; Reproduction; Population dynamics; Mortality; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_27091; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_6111; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1996
URL: http://hdl.handle.net/1834/1488

reproductive biology of tilapia zillii (gerv, 1848) from abu qir bay, egypt
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Moharram, S.G.; AKEL, E.H.K.H.
Reproductive aspects in addition to condition factor and hepatosomatic index were analyzed for Cichlid: Tilapia zillii collected from the beach-seiners operating in Abu Qir Bay during the period from June 2000 to February 2001. The overall sex ratio (M/F) was 1: 1.05. Length at first sexual maturity was 8.7 cm for females and 9.7 cm for males. Gonadosomatic index revealed that spawning season lasted from June to September with peak in July. Macroscopic examination for the gonads of T. zillii indicated that adult females had 4 stages of gonadal development (matureII; vitellogenic stage III; ripe stage IV and spent V). The maturity stages of males were three (matureII, mature III, and ripe stage). The microscopic features of gonadal sections of both females...
Tipo: Journal Contribution
Palavras-chave: Field study; Reproduction; Condition factor.
Ano: 2007
URL: http://hdl.handle.net/1834/1878

Aspectos morfológicos, reproductivos y desarrollo larval de Prionospio patagonica (Augener, 1923) y Prionospio orensanzi (Blake, 1983), (Polychaeta:Spionidae), presentes en el sur de Chile
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Díaz Jaramillo, M.J.
Se describe los principales aspectos morfológicos, reproductivos y de desarrollo larval de dos especies del género Prionospio, a partir de material colectado en la bahía de Corral y estuario del río Valdivia. Prionospio patagonica es un habitante común de fondos blandos, observándose principalmente al interior de los estuarios del Pacífico suroriental. A diferencia de descripciones morfológicas anteriores, esta especie presenta dos pares de ojos y no se observa una capa interna en sus ganchos encapuchados. La madurez sexual de estas especies, se produce a partir de los primeros meses de primavera, en donde se pueden encontrar hembras y machos con segmentos gametogénicos, aproximadamente a partir de individuos con más de 50 segmentos. Los gametos se...
Tipo: Theses and Dissertations
Palavras-chave: Larval development; Marine invertebrates; Reproduction; Animal morphology.
Ano: 2004
URL: http://hdl.handle.net/1834/4915

Ecología reproductiva y hábitos alimentarios del pez angel, Squatinaguggenheim (Chondrichthyes: Squatinidae), en el Distrito Biogeográfico Bonaerense, entre 34° y 42°S
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Colonello, J.H.
The reproductive ecology and feeding habits of Squatina guggenheim inthe SW Atlantic ecosystem between 34° and 42°S were studied. For the reproductive study, 423 individuals were obtained in 12 research cruises between 2000 and 2004. Reproductive parameters were analyzed in two oceanographic systems, the Rio de La Plata estuary (ERLP), Argentine-Uruguayan waters, and the El Rincon (ER), Argentina, Buenos Aires Prov. The feeding habits were analyzed using 329 stomach contents of individuals taken in ERLP (264)and ER (65 ER). For this study the individuals were reproductively (adults and juveniles)and seasonality (fall-winter and spring-summer)grouped. In ERLP the maximum total length was 920 mm for females and 865mm for males; in ER the maximum TL for...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Food preferences; Stomach content; Sexual maturity; Reproduction; Feeding behaviour; Food preferences; Sexual maturity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2005
URL: http://hdl.handle.net/1834/2596

Evaluación del potencial reproductivo de camarón blanco Litopenaeus vannamei en condiciones de domesticación
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ceballos, B.P.
La expansión de la industria camaronícola depende de un adecuado conocimiento del proceso de reproducción que permita desarrollar programas de domesticación. El potencial reproductivo de los camarones domesticados al ser transferidos a condiciones de maduración depende, en buena parte, de la condición previa en la que se encuentran. Los indicadores más importantes relacionados con esta condición y que se analizan en el presente trabajo en relación a la edad y el tamaño de los camarones son: el grado de desarrollo ovárico y testicular, la calidad espermática y los niveles de reservas energéticas en Litopenaeus vannamei. Adicionalmente, se evaluó la posibilidad de establecer criterios predictivos de un óptimo potencial reproductivo en machos. En primer...
Tipo: Theses and Dissertations
Palavras-chave: 962; Shrimp culture; Reproduction; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2003
URL: http://hdl.handle.net/1834/3416

Etude de quelques aspects de la reproduction chez La  sardinelle ronde Sardinella aurita (valenciennes, 1847) Pechee le long des cotes mauritaniennes
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: M´Bodj, O.B.; Wague, A.
Différents aspects de la biologie de la sardinelle plate Sardinella aurita (Valenciennes, 1847) sont étudiés : sex-ratio, stades sexuels, taille de première maturité sexuelle et relation taille – poids. Les résultats obtenus montrent que le sex-ratio est significativement en faveur des femelles et varie également avec la taille. Ils mettent également en évidence que la période de ponte s’étale de juin à septembre et que la taille de première maturité sexuelle se situe entre 28 et 29 cm. D’autre part, la relation taille – poids indique une allométrie légèrement majorante aussi bien chez les mâles que chez les femelles.
Tipo: Journal Contribution
Palavras-chave: Mauritania; Sardinelle; Sardinella aurita; Reproduction; Round sardinella; Fishery biology; Marine fisheries; Marine fisheries; Fishery biology; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_2937.
Ano: 2002
URL: http://hdl.handle.net/1834/218

Fecundidad en Argopecten circularis (Sowerby, 1835) (Bivalvia: Pectinidae) de Bahía Concepción, Baja California Sur, México
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Vallejo-F., M.
Argopecten circularis (Sowerby, 1835) fecunddity was estimated during spawnings of February-March 1989 and March-May 1990 in Bahía Concepción, Baja California sur, México. In general, the number of oocytes released during the spawning of Argopecten circularis were potentially relatad to shell height. The calculated average oocyte wet weight during the maturity period was 8.9033x10^-8 g. Spawning ocurred ¡n individuáis 44 to 77 mm in height. The highest fecundity occurred ¡n bivalves 58 to 77 mm ¡n height. Mean fecundity obtained for all heigts by regression analysis during spawning in February-march 1989 was 12, 102, 243 oocytes. In April-May of the same year, there were 17, 917, 006 oocytes, and during March-May 1990, 16, 938, 117 oocytes.
Tipo: Journal Contribution
Palavras-chave: Fecundity; Reproduction; Fecundity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1995
URL: http://hdl.handle.net/1834/3817

Algunas características de la estructura y del comportamiento migratorio de los cardúmenes de caballa (Scomber japonicus marplatensis)en la plataforma bonaerense (Mar Argentino); período 1965-1984
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Cousseau, M.B.; Angelescu, V.A.; Perrotta, R.G.
Three periods were distinguished during the analyzed years: the first one (1965-1975)may be defined as "normal fishing seasons" occurring from October to March, with catches between 8,000 and 14,000 tons.
Tipo: Journal Contribution
Palavras-chave: Size distribution; Reproduction; Sexual maturity; Feeding; Landing statistics; Migrations; Geographical distribution; Feeding; Geographical distribution; Reproduction; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1987
URL: http://hdl.handle.net/1834/2008

Análisis fisiológico y genético del desempeño reproductivo del camarón blanco Litopenaeus vannamei
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Arcos, G.F.
Durante la reproducción de camarones peneidos en cautiverio se ha observado que las hembras, a pesar de encontrarse bajo las mismas condiciones de maduración y de que provengan de una población homogénea en cuanto a edad y tamaño, presentan un diferente potencial reproductivo. Esto es, se ha observado que un alto porcentaje (75%) de hembras no desova o produce desoves no viables, mientras que un bajo porcentaje de hembras (25%) tienen la capacidad de desovar múltiples veces, produciendo estas la mayoría (50% -70%) de nauplios. Dado que el mantener en producción hembras con nulo o bajo desempeño reproductivo implica altos costos para los productores (alimento y espacio), se ha sugerido usar sólo múltiples desovadoras para incrementar el rendimiento por...
Tipo: Theses and Dissertations
Palavras-chave: 1022; Crustacean culture; Reproduction; Genetics; Genetics; Crustacean culture; Reproduction; Http://aims.fao.org/aos/agrovoc/c_3222; Http://aims.fao.org/aos/agrovoc/c_1985; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/3524

Algunos aspectos de la biología reproductiva y comportamiento trófico de la corvina rubia (Micropogonias furnieri) en relación al frente salino del estuario del Río de la Plata.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Bava, J.; Jaureguizar, A.; Meijide, F.
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Reproduction; Brackishwater fish; Trophic relationships; Feeding behaviour; Reproduction; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1996
URL: http://hdl.handle.net/1834/4005

Clave de identificación de cápsulas de huevos de condrictios del Mar Argentino
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Mabragaña, E.; Figueroa, D.E.; Scenna, L.B.; Díaz de Astarloa, J.M.; Colonello, J.H.; Massa, A.M.
Twenty eight species of oviparous chondrichthyans were reported on the Argentine Continental Shelf (SW Atlantic). The egg cases laid on the sea bed provide useful information to identify species, eggs laying areas and seasons. Based on the analysis of 155 egg cases corresponding to 21 chondrichthyan species, an illustrated field guide for a correct identification is presented.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Oviparity; Eggs; Identification keys; Marine fish; Marine environment; Eggs; Marine environment; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2009
URL: http://hdl.handle.net/1834/3459

Biología reproductiva del lenguado Paralichthys orbignyanus: Maduración y potencial reproductivo en ejemplares cultivados y salvajes
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Radonic, M.
Intensive culture of teleost fish introduces changes over the environmental conditions found in their spawning grounds, leading to reproductive dysfunctions. The manipulation of these parameters (photoperiod, temperature) represents a common technique to alter the reproductive rhythms and enhance the spawnings in terms of quality and quantity. Nevertheless, for each species some modifications or adjustments have to be done according to their reproductive strategies. The advantages of manipulating those parameters are primarily to schedule the spawning for a desired period of time and to obtain good quality and quantity eggs. Many factors such as tank dimension, light intensity, nutritional status and husbandry of broodfish and minimum stress level have...
Tipo: Theses and Dissertations
Palavras-chave: Fish culture; Marine aquaculture; Reproduction; Fecundity; Wild spawning; Brood stocks; Fish culture; Aquaculture; Paralichthys orbignyanus.
Ano: 2011
URL: http://hdl.handle.net/1834/4505

Etude diagnostic de la pêcherie de mulets sur la grande côte du Sénégal
Provedor de dados: Ocean Docs: e-repository of  publications
Tipo: Book
Palavras-chave: Mullet fisheries; Reproduction; Growth; Migrations; Ecology; Stocks; Landing statistics; Inland fisheries; Fishing gear; Exploitation; Canoe fisheries; Marketing; Artisanal fishing; Fishing licenses; Mesh regulations; Protected areas; Reef fisheries; Fishing effort.
Ano: 2009
URL: http://hdl.handle.net/1834/4578

Reproduction de Ethmalosa fimbriata (Bowdich) en lagune Aby (Côte d'Ivoire)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: N'goran, Ya Nestor.
Ethmalosa fimbriata (Bowdich) est un clupeidé très abondant dans les pêcheries artisanales ivoiriennes. Il représente plus de 60% des captures lagunaires. En lagune Aby, la taille de première maturité sexuelle se situe à 9.6cm pour le mâle et 9.9cm pour la femelle. La reproduction a lieu deux fois dans l'année pendant les saisons à relativement haute salinité, de février à mai et de juillet à août. Cette reproduction n'affecte pas de façon significative le sex-ratio dont la moyenne varie de 35% à 36% selon la période. La fécondité absolue est très fluctuante et varie de 11.000 à 148.000 oeufs par femelle.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Cycle sexuel; Sex-ratio; Fécondité.
Ano: 1991
URL: http://hdl.handle.net/1834/5060

L'anchois ( engraulis encrasicolus) des cotes nord de la Tunisie : reproduction et exploitation
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Gaamour, A.; Khemiri, S.; Mili, S.; Ben Abdallah, L.
The reproduction parameters necessary for stock management and catch analysis of anchovy in the North region of Tunisia were studied. The global sex-ratio is close to 1, special caution should be taken using this parameter as it is size dependant. Mean reproduction period extends from April to October. However within this period individuals of population have different spawning and maturation. The size at first sexual maturity Lm50 is about 7.3cm. In the North region of Tunisia, the anchovy landings are lower than the exploitable biomass, therefore the anchovy is an under-exploitable species in this region
Tipo: Journal Contribution
Palavras-chave: Engraulis encrasicolus; Clupeoid fisheries; Catching methods; Fishery management; Reproduction; Sex ratio; Sexual maturity; Spawning; Stock assessment; Fishery management; Spawning; Stock assessment; Reproduction; Sex ratio; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2004
URL: http://hdl.handle.net/1834/4236

Aspectos reproductivos de las principales especies de peces en la Zona Comun de Pesca Argentino-Uruguaya y en El Rincón. Noviembre, 1994
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Macchi, G.J.; Acha, E.M.
The maturity stages of the main commercial coastal fishes caught during the cruise H-13/94 are macroscopically analyzed, focusing this study on the white croaker Micropogonias furnieri and the striped weakfish Cynoscion striatus. Samples were obtained in the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina) during November 1994.
Tipo: Journal Contribution
Palavras-chave: Marine fish; Reproduction; Sexual maturity; Environmental conditions; Coastal waters; Reproduction; Sexual maturity; Environmental conditions; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1998
URL: http://hdl.handle.net/1834/2473

La fauna íctica en el litoral de la Bahía de San Antonio (Golfo San Matías, Provincia de Río Negro)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Perier, M.R.
La bahía de San Antonio es una zona costera protegida del litoral marítimo que presenta una variada composición faunística (invertebrados, peces, aves y mamíferos). Respecto de la fauna íctica, existe información preliminar que permitió detectar la presencia de especies que presentaban gónadas en estadío de maduración total y se observaron, estacionalmente, ejemplares juveniles de esas y otras especies que motivaron el planteo de las siguientes hipótesis: 1) La bahía San Antonio y la zona de mar adyacente es utilizada por numerosas especies de peces como zona de desove. 2) La bahía San Antonio y la zona de mar adyacente es utilizada por numerosas especies como área de cría y 3) La bahía San Antonio y la zona de mar adyacente es utilizada como zona de...
Tipo: Theses and Dissertations
Palavras-chave: Fishery biology; Fisheries resources; Coastal zone; Ichthyofauna; Spawning grounds; Nursery grounds; Feeding migrations; Environmental conditions; Population structure; Reproduction; Trophic relationships.
Ano: 1994
URL: http://hdl.handle.net/1834/4203

Maduración gonadal de hembras del Lenguado de California Paralichthys californicus en el medio natural
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Burgos, M.A.
En el presente trabajo se describe por primera vez la histología del ovario y el patrón de desarrollo del ovocito en el lenguado de California Paralichthys californicus capturadas en la zona de Bahía Magdalena, B.C.S., México. La examinación de las gónadas reveló una organización funcional del ovario de tipo asincrónico y el establecimiento de ocho estadios ováricos englobados en cinco fases de desarrollo. Dos procesos importantes ocurren durante el desarrollo ovárico. Primero, transformación de la ovogonia a ovocito primario y secundario y subsecuentemente en alvéolo cortical, el cual es acompañado por un crecimiento en tamaño del ovocito dado por un incremento en el diámetro de la vesícula germinal y la formación de nucleolos. El segundo proceso de...
Tipo: Theses and Dissertations
Palavras-chave: 510; Reproduction; Animal reproductive organs; Marine fish; Reproduction; Animal reproductive organs; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_29449.
Ano: 2003
URL: http://hdl.handle.net/1834/3415

La squille &lt;Squilla mantis&gt; des eaux tunisiennes : eco-biologie, pêche et opportunités de valorisation
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Mili, Sami.
La squille Squilla mantis (L., 1758) est un Stomapode très abondant le long des côtes tunisiennes. Cette ressource benthique est considérée comme rejet et elle n’est pas exploitée en Tunisie par défaut de tradition de consommation. La haute valeur commerciale de la squille sur les marchés internationaux incite à viser la pêche de cette espèce en vue de l’exporter. Ce travail représente la première base de données se rapportant à l’éco-biologie et aux qualités biochimiques de la squille S. mantis des eaux tunisiennes. Il a pour objectifs la connaissance des aspects relatifs à la biologie de la squille, notamment sa distribution, sa reproduction, sa croissance, ainsi que les opportunités d’exploitation de cette ressource. Dans cette étude, on a analysé les...
Tipo: Theses and Dissertations
Palavras-chave: Clupeoid fisheries; Reproduction.
Ano: 2013
URL: http://hdl.handle.net/1834/5405

Pulpos octopódidos (Cephalopoda, Octopodidae).
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Re, M.E.
Four species of the family Octopodidae were reported to occur along the Argentine coast Octopus tehuelchus, Eledone massyae, Enteroctopus megalocyathus and Robsonella fontaniana. The first two are distributed from Brazil to south of Rawson and San Jorge Gulf, respectively, in warm-temperate waters. E.megalocyathus and R.fontaniana are of Subantarctic origin, the first ranging from San Matias Gulf to Magellan Strait, the Beagle Channel and Malvinas Islands; R.fontaniana is distributed from San Matias Gulf southwards, with records in North Patagonian and San Jorge Gulfs, Chile and Peru. A synopsis of information about taxonomical status, patterns of geographic distribution and biological aspects of these four coastal octopodids is given.
Tipo: Book Section
Palavras-chave: Animal morphology; Feeding; Geographical distribution; Growth; Life cycle; Parasites; Reproduction; Feeding; Geographical distribution; Growth; Animal morphology; Life cycle; Parasites; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_5574; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/2583

Patrones de distribución espacio-temporal de los estadíos embrionarios y larvales de la anchoíta (Engraulis anchoita Hubbs &amp; Marini) a micro y macro-escala. Su relación con la supervivencia
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Sánchez, R.P.
This dissertation is focused on the study of implications of spatial patterns on survival of eggs and larvae and subsequent recruitment of the SW Atlantic anchovy, Engraulis anchoita. The study of distribution patterns is encompassed within the conceptual framework of the analysis of reproductive strategies of marine bony fish, as adaptations that enable them to cope with and actively exploit environmental variability, regulating their abundance and avoiding extinction. The SW Atlantic anchovy, is ideally suitable for studies on reproductive biology and recruitment on a comparative basis. Its spawning and nursery grounds are located in very diverse ecosystems. This variety refers to their physico-chemical properties, carrying capacity, the influence of...
Tipo: Theses and Dissertations
Palavras-chave: Fish eggs; Fish larvae; Recruitment; Ichthyoplankton; Biomass; Reproduction; Developmental stages; Mortality; Stock assessment; Environmental conditions; Biomass; Developmental stages; Stock assessment; Fish larvae; Reproduction; Mortality; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2230; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1995
URL: http://hdl.handle.net/1834/1491

Caribbean lobster reproduction:  a review
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ayra, L.; Cruz, R.
This review of the reproduction of the spiny lobster Panulirus argus aims to provide information that will improve  the management decisions, the study in population dynamics and on spiny lobsters aquaculture research. We  update the reader on this topic with studies carried out by decades in Cuban archipelago, Florida, Bermuda,  Mexico and Brazil. In particular, it was discussed the results of fieldwork studies on reproductive cycle, fecundity,  brood size and population egg production. It is pointed out the need to undertake studies  in captivity for  understanding of the reproductive mechanism and maturation in this specie. Despite the increasing number of  experimental studies on reproductive system, courting, copulation and spawning of lobsters,...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity.
Ano: 2010
URL: http://hdl.handle.net/1834/4530

Observaciones sobre el ciclo reproductivo del mero, Acanthistius brasilianus (Serranidae, Pisces)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Dell'Arciprete, O.P.; Christiansen, H.E.; Diaz de Astarloa, J.M.
The present paper deals with the study of the reproductive cycle of the sea-bass (Acanthistius brasilianus). Its main objective is getting some advance in the inderstanding of the gonad cycle of the sea-bass and the comprehension of its mode of reproduction. The study is emphasized on tahe females because it is thought that they permit a better analysis in this first stage of the reseach work. Some basic aspects, such as the anatomical and the histological description of the gonadas, the study of ovocyte maturation phases and the development of ovary maturity scales were into account. The gonad cycle was analized throughout the year by means of different approaches; histological analysis of ovary preparation and by following the statistical structure of...
Tipo: Journal Contribution
Palavras-chave: Sexual maturity; Reproductive cycle; Reproduction; Ovaries; Testes; Ovaries; Sexual maturity; Reproduction; Testes; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7682.
Ano: 1987
URL: http://hdl.handle.net/1834/2004

Ecologie et biologie de l'émissole lisse Mustelus mustelus (Linné, 1758) sur les côtes de Mauritanie
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Khallahi, B.
RESUME:  Les eaux océaniques mauritaniennes sont au carrefour d'eaux froides et salées provenant du Nord, et d'autres chaudes et moins salées du Sud. L'interaction de ces eaux est à l'origine d'un régime hydrologique à 4 saisons: une saison froide de janvier à mai, une saison de transition froide-chaude de juin à juillet, une saison chaude d'août à octobre et enfin une saison de transition chaude – froide de novembre à décembre. La présente étude met en relation ces variations hydrologiques saisonnières, la distribution et la biologie de Mustelus mustelus. La distribution spatiale et temporelle de M. mustelus sur le plateau continental mauritanien a été suivie en analysant les données récoltées au cours de 20 campagnes de prospections scientifiques, 13...
Tipo: Theses and Dissertations
Palavras-chave: Mauritania; Croissance; Biologie; Biology; Physical environment; Mauritanie; Ecology; Fecondity; Growth; Emissole lisse; Alimentation; Smouthound shark; Mustelus mustelus; Fécondité; Reproduction; Milieu physique; Écologie; Distribution; Shark fisheries.
Ano: 2004
URL: http://hdl.handle.net/1834/677

Biology and toxicity of the pufferfish Lagocephalus sceleratus (GMELIN, 1789) from  the Gulf of Suez
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: El-Ganainy, A. A.; Sabrah, M. M.; Zaky, M. A.
Some biological aspects of the pufferfish Lagocephalus sceleratus were studied and correlated with the toxicity of the fish. A sample of 176 fish with total lengths ranging from 18.5 to 78.5 cm were collected from commercial catches at the Attaka fishing harbor between October 2002 and June 2003. Length weight regression parameters for males, females and all individuals were estimated. Modal progression analysis output indicates ten distinct age groups. The parameters of the von Bertalanffy's growth model were L∞ = 81.1 cm and K = 0.26 per year. The overall sex ratio of males to females was 1: 1.3. The spawning takes place during summer and the size at which 50% of fishes are mature is 42.1 cm for males and 43.3 cm for females. Analysis of the diet...
Tipo: Journal Contribution
Palavras-chave: Environmental Studies; Reproduction; Toxicity; Growth; Fish; Toxicity; Growth; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7826; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2006
URL: http://hdl.handle.net/1834/1452

Calamares omastréfidos (Cephalopoda, Ommastrephidae).
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Brunetti, N.E.; Ivanovic, M.L.; Elena, B.
An update of the knowledge on the three most important ommastrephid species that inhabit the SW Atlantic: Illex argentinus, Martialia hyadesi and Ommastrephes bartramii, is presented. Up to the moment, only I.argentinus was intensively studied. Its distribution, population structure, reproduction, growth and paralarval development are analyzed, togheter with other aspects of its biology, such as feeding, predators and parasites. Also its utilization for human consmption is considered. Regarding M.hyadesi and O.bartrami, information on their distribution and biology is presented.
Tipo: Book Section
Palavras-chave: Animal morphology; Geographical distribution; Reproduction; Fecundity; Growth; Feeding; Predators; Parasites; Population structure; Geographical distribution; Growth; Feeding; Predators; Population structure; Animal morphology; Reproduction; Fecundity; Parasites; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_6163; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_5574.
Ano: 1998
URL: http://hdl.handle.net/1834/2576

Estimación de los parámetros de crecimiento y reproducción de la sardina (Sardinella aurita) del Sureste de la Isla de Margarita, Venezuela
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Tagliafico, A.; González, L.W.; Eslava, N.
En Venezuela, la sardina (Sardinella aurita) es considerada un recurso estratégico por representar una fuente protéica de bajo costo y sustentar la pesquería artesanal de mayor importancia socio-económica el país. Por tal razón, los objetivos del presente trabajo fueron estimar los parámetros de crecimiento y aspectos reproductivos para contribuir a la evaluación y manejo de la pesquería de la sardina. Se colectaron 3960 individuos mediante muestreos mensuales de las capturas realizadas con chinchorro sardinero en el sureste de la Isla de Margarita, entre enero y diciembre de 2003. La longitud asintótica (L∞=26 cm) y el coeficiente de crecimiento (K=1.1 año-1) fueron estimados usando la rutina ELEFAN I del paquete FiSAT, conduciendo a un valor de índice de...
Tipo: Journal Contribution
Palavras-chave: Growth; Reproduction; Growth; Reproduction; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2008
URL: http://hdl.handle.net/1834/3483

Estrategias reproductivas de moluscos bivalvos y equinoideos
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Calvo, J.; Morriconi, E.; Orler, P.
The theoretical aspects of reproductive strategies and life histories are analyzed. The gonadal structures and the main features of gametogenesis of bivalves and echinoids are described. Research on the reproductive characteristics and gametogenic cycles of the bivalve molluscs in the Argentinian littoral and the echinoid Loxechinus albus is reviewed. Special references to Mytilus edulis, Aulacomya ater, Brachidontes purpuratus, Aequipecten tehuelchus, Zygochlamys patagonica, Ostrea puelchana, Clausinella gayi, Protothaca antiqua, Eurhomalea exalbida and Mesodesma mactroides are made. Analysis of reproductive cycles includes histological and ponderal descriptions of gonadal variations. The main trend found is the partial and multiple spawning episodes....
Tipo: Book Section
Palavras-chave: Hermaphroditism; Gametogenesis; Life cycle; Marine molluscs; Reproduction; Reproductive cycle; Hermaphroditism; Gametogenesis; Life cycle; Reproduction; Http://aims.fao.org/aos/agrovoc/c_3571; Http://aims.fao.org/aos/agrovoc/c_27931; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/2581

Estudio sobre la anatomía y algunos aspectos de la biología de los congrios que habitan el Mar Argentino y adyacencias.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Figueroa, D.E.
On the base of samples of congrid eels captured in the South Western Atlantic Ocean, between 34 degree S to 40 degree S and 30m to 400m depth, from research cruises, commercial fleet (low scale and coastal fishing) and specimens preserved in ichthyological collections, four species were determined: Ariosoma opistophthalmum, Conger orbignyanus, Bassanago albescens and Bassanago nielseni. The latter is the first record in the region. Diagnosis of taxa from Family Congridae to species is given. Morphology, reproduction, feeding and distribution of the fish species found from the region are compared and discussed, as well as those from other parts of the world. On the other hand, numerous samples of ichthyoplankton were obtained from research cruises carried...
Tipo: Theses and Dissertations
Palavras-chave: Animal morphology; Taxonomy; Anatomy; Reproduction; Feeding; Geographical distribution; Fish larvae; Taxonomy; Feeding; Geographical distribution; Animal morphology; Anatomy; Reproduction; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_49890; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1999
URL: http://hdl.handle.net/1834/1486

Abundancia, reproducción y distribucion de tallas del gatuzo Mustelus schmitti en la Zona Comun de Pesca Argentino-Uruguaya y en el Rincón. Noviembre, 1994
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Cousseau, M.B.; Carozza, C.R.; Macchi, G.J.
Relative abundance, length distributions and reproductive condition of Mustelus schmitti are analyzed with samples obtained in the cruise H-13/94. Our results are compared with those obtained in other cruises. The samples were collected in the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina).
Tipo: Journal Contribution
Palavras-chave: Abundance; Reproduction; Fishery surveys; Size distribution; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/2475

Etude de la reproduction chez "Diplodus sagus cadenati " (sparidae) de la cote de nouadhibou (mauritanie)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Dia, M.; Wague, A.; Ghorbel, M.
L’étude de la reproduction de Diplodus sargus cadenati, de la côte de Nouadhibou a porté sur 513 individus de longueurs à la fourche comprises entre 13,2 cm et 32,2 cm. Cette étude a montré que la période de ponte de cette espèce s’étend de janvier à avril, période où la température de l’eau est en moyenne de 18,4°c. La taille (L50) à la laquelle 50% des individus sont matures est de 21,47 ± 0,45 cm de longueur à la fourche (Lf) pour les mâles et de 20,79 ± 0,55 cm pour les femelles. L’étude de la sex-ratio n’a pas montré la dominance de l’un ou de l’autre sexe.
Tipo: Journal Contribution
Palavras-chave: Animal physiology; Marine fish; Methodology; Reproduction; Sex ratio; Size-at-first-maturity; Spawning seasons; Statistical tables; Fishery biology; Marine fishes.
Ano: 2009
URL: http://hdl.handle.net/1834/4490

Features of the reproductive biology of the southern blue whiting (Micromesistius australis).
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Macchi, G.J.; Pájaro, M.
Different features of the reproductive biology of the southern blue whiting (Micromesistius australis) are analyzed. Samples were obtained from research cruises and from commercial catches carried out between March-November 1995, in waters near Malvinas Islands. Reproductive activity of M. australis was observed between the end of July and September, southwest of Malvinas Islands. Oocyte diameter distribution of gravid females and the histological observations show that this species is a batch spawner with determinate annual fecundity.  Preliminary estimate of the potential annual fecundity was about 478,000 oocytes for a 51-cm mean total length. Size at first maturity for this species was about 31 cm total length.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Ovaries; Fecundity; Ovaries; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 1999
URL: http://hdl.handle.net/1834/2566

El canibalismo como mecanismo regulador denso-dependiente de mortalidad natural en la anchoíta argentina Engraulis anchoita. Su relación con las estrategias reproductivas de la especie.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Pájaro, M.
Cannibalism is not an abnormal behaviour and it can be observed in a wide number of animals. In Pisces, cannibalism may be the result of endogenous intraspecific factors (nutritional state, size, age, state of development) or exogenous intraspecific factors (food, density, light). Nevertheless, external fertilization and the high fecundity of teleost fish tend to increase egg cannibalism, in particular among filter feeding fishes such as anchovies. In the present work, two important Argentine anchovy Engraulis anchoita stocks were studied. The first is to the north of 41°S, and spawns during spring on the coastal and shelf waters of Buenos Aires Province,Argentina, and Uruguay. The second one inhabits the Patagonian region, from 41°S to 47°S. It spawns...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Cannibalism; Natural mortality; Fish larvae; Fish eggs; Spawning seasons; Stocks; Food preferences; Reproduction; Stocks; Food preferences; Feeding behaviour; Cannibalism; Fish larvae; Reproduction; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_9580; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/1476

Características ecológicas del pulpito Octopus Tehuelchus en tres ambientes del golfo San Matías
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Storero, L.P.
Coastal marine ecosystems are highly variable and the inherent biotic and abiotic factors of these environments can influence the bio-ecological characteristics of the living cephalopods. The presence of the small octopus “pulpito” Octopus tehuelchus in the coastal environments of San Matías Gulf has been exploited by artisanal fishermen for more than 60 years. The aim of this study is to evaluate the variations in the life cycle of the pulpito, and the factors that could account for these variations in three different coastal environments of San Matías Gulf, with differences in the physical, ecological and fisheries characteristics. This study was developed in San Antonio bay, El Fuerte and Islote Lobos. Monthly samplings (October 2005-2007) in the...
Tipo: Theses and Dissertations
Palavras-chave: Fishery biology; Cephalopod fisheries; Artisanal fishing; Coastal zone management; Coastal environment; Environmental conditions; Population dynamics; Sex composition; Spatial distribution; Morphology (animal); Life cycle; Feeding; Size-at-first-maturity; Age determination; Growth; Reproduction; Reproductive behaviour.
Ano: 2010
URL: http://hdl.handle.net/1834/5023

Etude du cycle de la reproduction et la fécondité de muge &lt;Liza aurata&gt; (Risso, 1810) (Famille Mugilidae) dans les eaux côtières de Tartous (Syrie)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Saad, A.; Fina, H.
L’étude de la biologie de 852 poissons de Liza aurata dans les eaux côtières de Tartous a montré que la période de reproduction de cette espèce se situe durant octobre-novembre. La taille à la première maturité est de l’ordre de 34 cm (Lt) pour les femelles âgées de 3 ans. La fécondité absolue augmente avec la taille de poisson.
Tipo: Journal Contribution
Palavras-chave: Biologie; Muges; Liza aurata; Reproduction; Syrie  Fecundity Fecundity Reproductive cycle Sexual maturity Fecundity Sexual maturity http://aims.fao.org/aos/agrovoc/c_15725 http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2001
URL: http://hdl.handle.net/1834/3753

Desempeño reproductivo de Litopenaeus schmitti de cultivo en  condiciones comerciales
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Pérez-Jar, L.; Ramos Trujillo, L.; Racotta Dimitrov, I. S.; Guerrero, C.; Acebedo, A.
Para satisfacer la demanda de postlarvas en las granjas de cultivo de camarón blanco Litopenaeus schmitti en Cuba, los Laboratorios de Producción de Postlarvas requieren de un aumento del porcentaje de cópulas en reproductores obtenidos en ciclo cerrado. Este trabajo se propone evaluar el desempeño reproductivo de los progenitores, bajo la influencia del manejo empleado en sistemas de tanques unisexo y mixto en condiciones comerciales. Los resultados indicaron que el desempeño reproductivo en términos de hembras maduras, porcentaje de cópulas exitosas, número de huevos y nauplios por desove, así como porcentaje de eclosión, no difirió entre los sistemas empleados. El porcentaje de hembras maduras (estadio IV) del número total en cada tratamiento, se...
Tipo: Journal Contribution
Palavras-chave: Brine shrimp culture; Reproduction; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2010
URL: http://hdl.handle.net/1834/4105

Reproduccion y fecundidad de la cherna americana (epinephelus morio) en el Banco de Campeche, México
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Gimenez Hurtado, E.; Moreno C. Garcia, V.; Burgos Rosas, R.; Alfonso Chiroldes, S.
The red grouper (Epinephelus morio), of the family Serranidae, is the most important species, caught in the Campeche Bank, Mexico. The knowledge related with their reproduction is important for an adequate management. We found that sexual proportion (WH) changed by size. The biggest proportions of females was in the size class of 30 cm (1:31.5). Fishes over 75 cm, showed a not significantly different proportion from 1:l. Sex change was found between 30-35 cm (Lt). Fatty rnesenterial increases during the Fall (September, October and November), decreasing during Winter (December, January and Febrary). Spawning process starts in December (early winter) and tinish in May, occurring a massive spawning during February, March and April. 77% of mature females were...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 2003
URL: http://hdl.handle.net/1834/3678

Monitoreo y prospección de orange roughy, año 2001
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Young, Z.; Díaz, E.; Bahamonde, R.; Tascheri, R.; Muñoz, Y.; Olivares, A.; Ortego, M.I.; Rivera, J.; Oliva, J.
Se realizó una recopilación y análisis de datos de la pesquería de orange roughy (Hoplostethus atlanticus) que cubrió el período mayo-agosto de 2001, con el propósito de caracterizar la actividad pesquera y la condición biológica del recurso. Además, se realizó una pesca exploratoria, orientada a prospectar nuevas áreas de extracción para este recurso.
Tipo: Report
Palavras-chave: Marine fisheries; Deep-sea fisheries; Stock assessment; Fecundity; Reproduction; Echo surveys; Marine fisheries; Stock assessment; Fecundity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/1727

Reproductive cycle and sex reversal of Pagellus erythrinus (Linnaeus, 1758) in gulf of Tunis (Central Mediterranean)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Zarrad, R.; Cherif, M.; Gharbi, H.; Jarboui, O.; Missaoui, H.
Dans ce travail, nous étudions le cycle sexuel et l’inversion sexuelle du pageot commun Pagellus erythrinus dans le golfe de Tunis. De février 2003 à janvier 2004, un total de 807 individus ont été échantillonnés mensuellement à partir des opérations de chalutage benthique. La longueur totale varie de 7,6 à 28,5 cm. L’espèce a été caractérisée par un hermaphrodisme protérogyne. Le sex-ratio (femelles / mâles) a été de 2,78. La saison de ponte s’étend d’avril à octobre et principalement de mai à juillet. Cette dernière est liée à l’élévation de la température des eaux de surface qui passe de 16 à 24°C. La première maturité sexuelle (L50) se situe chez les femelles à une longueur totale de 14,6 cm et chez les mâles à 15,8 cm. L’inversion du sexe a pris place...
Tipo: Journal Contribution
Palavras-chave: Sexual maturity; Reproduction; Seabream fisheries.
Ano: 2010
URL: http://hdl.handle.net/1834/4691

Efecto de la salinidad y la temperatura sobre el ciclo de vida de cangrejos estuariales (Decapoda, Grapsidae).
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Bas, C.
El ciclo de vida de los cangrejos verdaderos (Crustacea, Brachyura) incluye en la mayoria de los casos cuatro etapas. Una etapa embrionaria, en la cual los huevos en desarrollo protegidos por una membrana de varias capas, se mantienen adheridos a los ple6podas de la hembra, expuestos a las mismas condiciones ambientales que el adulto . Posteriormente una etapa larval planct6nica y finalmente una fase juvenil y una adulta, ambas bent6nicas en igual o diferente ambiente . Muy frecuentemente [as historias de vida de los organismos son referidas como rigidamente definidas para cada especie, sin embargo existen numerosos ejemplos en invertebrados donde las caracteristicas del desarrollo y la reproducci6n de una especie son ampliamente influenciadas y...
Tipo: Theses and Dissertations
Palavras-chave: Salinity effects; Temperature effects; Life cycle; Comparative studies; Larval development; Embryonic development; Feeding; Reproduction; Seasonal variations; Feeding; Embryonic development; Life cycle; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_2545; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2001
URL: http://hdl.handle.net/1834/2972

El dorado, Salminus maxillosus (Pisces, Characiformes)en el Río de la Plata y Río Uruguay inferior
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Sverlij, S.B.; Espinach Ros, A.
Catch per unit effort (CPUE), lenght distribution, age, growth, reproduction, migrations and feeding were studies through samples collected with longlines and a gang of gill-nets of several mesh size. CPUE data showed a progressive decrease of the relative abundance in the Río de la Plata, during the study period. Age was studied from scales. Back-calculations of growth revealed the pressence of Lee's phenomenon. Means lenghts at age were greater in females. No significant difference was found in lenght-weight regressions from both sexes and sampling areas. Only young individuals from 1 to 6 years were caught. None of the fish studied had ripening gonads. Extensive migrations were recorded both in the Paraná and Uruguay rivers. Stomach contents analysis...
Tipo: Journal Contribution
Palavras-chave: Migrations; Catch/effort; Sex ratio; Size distribution; Scale reading; Growth curves; Reproduction; Stomach content; Sex ratio; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1986
URL: http://hdl.handle.net/1834/2032

Identificación de las variables que afectan a la fracción desovante de la población bonaerense de anchoíta (Engraulis anchoita) mediante el uso de modelos lineales generalizados
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Leonarduzzi, E.; Di Marco, E.J.; Pájaro, M.
The daily spawning females fraction (S) of Argentine anchovy (Engraulis anchoita) in relation to the year, length, proportion of females, temperature and salinity variables was studied using generalized linear models. Samples were collected during eleven research surveys carried out in the main spawning seasons and areas during 1993-2008 (Southwest Atlantic Ocean, Argentine Sea). The aim of this work was to identify the factors that affect the spawning activity. No temporary differences were observed and an S 0.12 average value was estimated. The poor explanatory percentage of the models analyzed did not allow to clearly detect the variables that could affect S. Length and temperature were the only variables that related positively, which suggests that...
Tipo: Journal Contribution
Palavras-chave: Pelagic fish; Reproduction; Biomass; Spawning; Mathematical models.
Ano: 2013
URL: http://hdl.handle.net/1834/5492

L'anchois &lt;Engraulis encrasicolus&gt; des côtes nord de la Tunisie: reproduction et exploitation.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Khemiri, S.; Gaamour, A.; Mili, S.; Ben Abdallah, L.
التكاثر والاستغلال - يهتم هذا العمل بدراسة معطيات التكاثر، الضرورية لحسن التصرف في المخزون، وبتحليل إنتاج الصيد البحري لسمك الأنشوة بالسواحل الشمالية لتونس. بالنسبة لجملة العينات يتساوى عدد الإناث والذكور مع العلم أن نسبة كل جنس تتغير حسب طول السمكة. يتكاثر سمك الأنشوة خلال الفترة الممتدة من أفريل إلى أكتوبر مع وجود اختلال بين الأفراد. يبلغ سمك الأنشوة نضجه الجنسي الأول لطول يناهز 7.3 صم. يفوق المخزون المتاح استغلاله من سمك الأنشوة الكميات المنزلة بمواني الصيد البحري، تبعا لذلك فإن سمك الأنشوة بالشمال التونسي دون الاستغلال الأمثل.
Tipo: Journal Contribution
Palavras-chave: Catch statistics; Reproduction; Sex ratio; Sexual maturity; Reproduction; Sex ratio; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2004
URL: http://hdl.handle.net/1834/1154

Aspectos biológicos del calamar Illex argentinus
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Leta, H.R.
La creciente importancia que los recursos de calamar han adquirido en 105 últimos 30 años, los sitúa actualmente entre los más importantes recursos pesqueros del mundo. En consecuencia, paises tradicionalmente no explotadores o consumidores de productos de calamar, han orientado sus esfuerzos hacia el logro de un mejor conocimiento de las especies de cefalópodos que habitan su ambiente marino. En este sentido el aporte de disciplinas tales como la biología ha sido decisivo para desarrollar en forma exitosa pesquerías de calamar, entre otras.El programa de investigaciones del Instituto Nacional de Pesca para 1980 incluyó el estudio integral de la explotación de los calamares como un primer paso hacia el desarrollo de una pesquería del recurso.  Este trabajo...
Tipo: Report
Palavras-chave: Biology; Environmental conditions; Population structure; Spawning; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Length; Behaviour; Migrations; Growth; Population structure; Spawning; Length; Growth; Biology; Environmental conditions; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Behaviour; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_4260; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_925; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_868.
Ano: 1981
URL: http://hdl.handle.net/1834/2563

Evaluación del stock desovante de anchoveta en la I y II Regiones, año 2003
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Braun, M.; Claramunt, G.; Reyes, H.; Catasti, V.; Montenegro, C.; Baros, V.; Díaz, E.; Pizarro, J.; Pizarro, P.
El informe contiene los resultados correspondientes al desarrollo del crucero Módulo huevos y Módulo adultos del Proyecto FIP 2003-07. De conformidad con la metodología planteada en la propuesta técnica y con el fin de estimar los parámetros biológicos que requiere la aplicación del Método de Producción de Huevos, a saber: fecundidad media poblacional, frecuencia de desove, proporción sexual, producción diaria de huevos y peso estimado de hembras maduras, se realizaron los respectivos muestreos para el recurso anchoveta, durante el período de máxima actividad reproductiva del año 2003.
Tipo: Report
Palavras-chave: Stock assessment; Reproduction; Eggs; Fecundity; Pelagic fisheries; Spawning; Eggs; Stock assessment; Spawning; Reproduction; Fecundity; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2004
URL: http://hdl.handle.net/1834/1732

Avances en métodos y tecnología aplicados a la investigación pesquera. Seminario final del Proyecto INIDEP-JICA sobre evaluación y monitoreo de recursos pesqueros 1994-1999
Provedor de dados: Ocean Docs: e-repository of  publications
The Seminar organized by the Japan International Cooperation Agency (JICA) and the National Institute for Fisheries Research and Development (INIDEP) of Argentina, was held at INIDEP, Mar del Plata from September 6-9, 1999. The publication comprises expanded abstracts of each presentation, in four Theme Sessions: Reproduction and Survival, Age and Growth, Stock Identifcation and Resource Management Techniques and Relation between Oceanographic and Fishing Conditions. Presentations focused mainly on the following marine resources: squids Illex argentinus and Loligo sanpaulensis; and fish species southern blue whiting Micromesistius australis, patagonian hoki Macruronus magellanicus, kingklip Genypterus blacodes,  patagonian toothfish Dissostichus...
Tipo: Book
Palavras-chave: International cooperation; Research programmes; Fishery resources; Reproduction; Survival; Growth; Age determination; Fishery management; Population structure; Stock identification; Mesh selectivity; Satellite sensing.
Ano: 1999
URL: http://hdl.handle.net/1834/5510

Numerosidad celular en función del habitat en los tejidos conjuntivos y gonadal en el mejillín (Brachydontes rodriguezi)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Louge, E.
Tipo: Theses and Dissertations
Palavras-chave: Reproduction; Histology; Horizontal distribution.
Ano: 1984
URL: http://hdl.handle.net/1834/4189

Madurez reproductiva y crecimiento del pulpito tehuelche Octopus tehuelchus en distintos sectores del Golfo San Matías
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Storero, L.P.; Ocampo Reinaldo, M.; Narvarte, M.A.
En el informe se presenta la evolución de la madurez reproductiva a lo largo de un ciclo anual y se realiza un análisis preliminar del crecimiento del pulpito tehuelche en distintos sectores del Golfo San Matías. La información se recolectó entre 2005 y 2007 en los sitios El Fuerte, Islote Lobos y Bahía de San Antonio. Se observan diferencias en el periodo de madurez entre los sitios. El crecimiento del pulpito muestra una marcada estacionalidad con crecimiento lento durante el invierno. Además, no se observan diferencias en el crecimiento entre sexos pero si entre los sitios analizados. Se sugieren medidas de manejo para los sitios explotados artesanalmente
Tipo: Report
Palavras-chave: Reproduction; Growth rate; Sexual maturity; Artisanal fishing; Reproduction; Growth rate.
Ano: 2008
URL: http://hdl.handle.net/1834/4383

Ecología reproductiva de tres batoideos (Chondrichthyes): iAtlantoraja castelnaui (Rajidae), Rioraja agassizi (Rajidae) y Zapteryx brevirostris (Rhinobatidae). Implicancias de distintas estrategias reproductivas en un escenario de explotación comercial intensiva
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Colonello, J.H.
The reproductive ecology of the Chondrichthyans Atlantoraja castelnaui (spotback skate), Rioraja agassizi (rio skate) and iZapteryx brevirostris (lesser guitarfish) is analyzed in this study. The two first are oviparous species that attain 168 mm and 768 mm of maximum total length (MTL), respectively. The third is a viviparous lecitotrophic ray that grows to a MTL of 720 mm. The examined material came from the purchase of samples in the Mar del Plata Port (Buenos Aires prov., Argentina) and from research cruises carried out by the National Institute of Fisheries Research and Development (INIDEP). Two work lines were developed to analyze the reproductive ecology and to validate the reproductive stages of these species, one based on macroscopic analysis of...
Tipo: Theses and Dissertations
Palavras-chave: Marine fish; Reproduction; Animal reproductive organs; Sexual maturity; Histology; Reproduction; Animal reproductive organs; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_29449; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2009
URL: http://hdl.handle.net/1834/3546

Reproducción de la corvina rubia Micropogonias furnieri del sector rioplatense. Su relación con los gradientes horizontales de salinidad.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Macchi, G.J.
Reproduction of white croaker collected during 1991-1993 in the Argentine-Uruguayan Common Fishing Zone (CFZ)(34°-39°30'S), was studied by means of histological analysis of ovaries. Areal and seasonal maturity stage distributions were compared; ripeness degree was correlated to horizontal salinity gradients. During June and July an overall predominance of the resting stage was observed; nevertheless, a high proportion of females in early maturation was detected near Cabo San Antonio and Punta Piedras. In late October-early November an increase of maturing individuals was observed. Females in advanced maturity stage and partially spent,with postovulatory follicles, were collected mainly in estuarine waters with wide bottom salinity ranges (between 9-25...
Tipo: Journal Contribution
Palavras-chave: Ovaries; Salinity effects; Estuarine front; Reproduction; Salinity gradients; Sexual maturity; Fronts; Ovaries; Reproduction; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1997
URL: http://hdl.handle.net/1834/1932

Biología reproductiva comparada de especies de la familia Sciaenidae en aguas del Río de la Plata y Costa Bonaerense
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Militelli, M.I.
In the Argentine Sea (SW Atlantic), particularly in the Bonaerense Coastal Zone there are two frontal zones, the waterfront area of the Rio de la Plata and the southern area of the province called El Rincón. The fauna of the Bonaerense Coastal Area has its own characteristics and in the case of fish is defined by dominant species, as is the whole of Sciaenidae family composed of seven species: white mouth croaker (Micropogonias furnieri), striped weakfish (Cynoscion guatucupa), king weakfish (Macrodon ancylodon), black drum (Pogonias cromis), Argentine croaker (Umbrina canosai), drum (Paralonchurus brasiliensis) and southern kingfish (Menticirrhus americanus). In the present work is discussed in a comparative way various aspects of the reproductive cycle...
Tipo: Theses and Dissertations
Palavras-chave: Brackishwater fish; Reproduction; Spawning grounds; Coastal waters; Fronts; Environmental conditions; Histology; Reproduction; Spawning grounds; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007
URL: http://hdl.handle.net/1834/3549

The effect of broodstock diet on reproductive activity and offspring quality in the marine crustacean &lt;i&gt;Mysidopsis bahia&lt;/i&gt; (M.)
Provedor de dados: Open Marine Archive
Autores: Léger, P.; Ferraz de Queiroz, J.; Sorgeloos, P.
This paper describes the first results of a study on the effects of broodstock nutrition on reproduction in marine crustaceans. For this, a short-term test system has been developed with the estuarine mysid shrimp &lt;i&gt;Mysidopsis bahia&lt;/i&gt; (M.) as experimental animal. Three different &lt;i&gt;Artemia&lt;/i&gt; preparations were evaluated for their possible effects on reproductive activity and offspring quality: a commercial maturation diet (Marila) incorporated in Great Salt Lake &lt;i&gt;Artemia&lt;/i&gt; metanauplii was compared to freshly-hatched nauplii and coconut-oil enriched metanauplii as food sources for the experimental broodstock animals. Within an experimental period of 14 days after reaching sexual maturity, 3.4 respectively 8.8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Mysidopsis bahia.
Ano: 1989
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3183

Natural History of Pseudoboine Snakes
Provedor de dados: Papéis Avulsos de Zoologia
Autores: Gaiarsa,Marília P.; Alencar,Laura R.V. de; Martins,Marcio.
Even though natural history information is crucial for answering key ecological, evolutionary, and conservation questions, basic studies are still lacking for Neotropical snakes. This study aims at contributing to the knowledge of the Neotropical tribe Pseudoboini, based on literature data, analysis of museum specimens and unpublished data. The tribe is mainly composed of moderate-sized snakes, although small and large-sized snakes also occur in the clade. Mean fecundity ranged from two (Rodriguesophis iglesiasi) to 29 eggs (Clelia plumbea) and the species are predominantly terrestrial and nocturnal. Most species are diet specialists and lizards are the most commonly consumed prey (found in the diet of 29 species), followed by small mammals (consumed by 20...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecology; Diet; Microhabitat; Reproduction; Dipsadidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013001900001

Reproductive characteristics of the predator Podisus nigrispinus fed with an insect resistant soybean variety
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Matos Neto,Fausto da Costa; Zanuncio,José Cola; Picanço,Marcelo Coutinho; Cruz,Ivan.
The objective of this research was to evaluate the effect of the insect resistant soybean genotype IAC 17 on reproductive characteristics of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) females compared to the soybean insect susceptible genotype UFV 16. Treatments were: T1) females of P. nigrispinus fed on plants of the UFV 16 and Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) caterpillars reared on leaves of this variety; T2) females of P. nigrispinus fed on plants of the IAC 17 and A. gemmatalis caterpillars reared on leaves of this variety. Longevity of females, pre-oviposition, oviposition and pos-oviposition periods, number of eggs and egg masses/female, egg weight, interval between egg mass laying, number of eggs/egg mass,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anticarsia gemmatalis; Insects; Reproduction; Biological control; Pest control.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000700004

Patterns of Reproductive and Seed Dispersal and Ecological Significance of the Clonal Spring Ephemeroid Plant Carex physodes in the Gurbantuggut Desert
Provedor de dados: Planta Daninha
Autores: ABUDUREHEMAN,B.; CHEN,Y.; LI,X.; ZHANG,L.; LIU,H.; ZHANG,D.; GUAN,K.
ABSTRACT: Carex physodes is an ephemeral species in the cold desert of Gurbantunggut in Northwest China. It has both asexual and sexual reproductive patterns. The primary aims of this study were to characterize the reproduction systems and identify the role of fruit dispersal in the sexual reproduction of C. physodes. Aboveground and underground biomass, root-shoot ratio, inflorescence biomass, fruit-set of C. physodes were measured and dispersal of perigynia and achenes in the natural habitat and indoor condition were studied. The underground biomass of C. physodes was approximately 10 times more than the aboveground biomass. The most parts of aboveground biomass is allocated to the inflorescence, which suggests that C. physodes allocates most biomass to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carex physodes; Reproduction; Dispersal pattern; Perigynium.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100213

Host suitability of weeds and forage species to root-knot nematode meloidogyne graminicola as a funcion of irrigation management
Provedor de dados: Planta Daninha
Autores: Negretti,R.R.D.; Manica-Berto,R.; Agostinetto,D.; Thürmer,L.; Gomes,C.B.
The irrigated rice production can be limited by various phytopathogenic agents, including root-knot nematodes (Meloidogyne spp.). Thus, the aim of this research was to check the host suitability of plant species most often found off-season and during rice cultivation, to root-knot nematode Meloidogyne graminicola, under two irrigation managements. Two experiments were conducted in a completely randomized design. In the first experiment seven plant species that occur in an area of rice cultivation, in fallow, off-season were evaluated. For the second experiment nine weed species infesting the irrigated rice culture were tested in rainfed and flooding conditions. The sixteen species, kept individually in pots with sterilized substrate, were inoculated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hosts; Reproduction; Susceptibility; Oryza sativa.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300011

DAIRY HEIFER MORBIDITY, MORTALITY, AND HEALTH MANAGEMENT FOCUSING ON PREWEANED HEIFERS
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Ott,   Stephen L.
The National Dairy Heifer Evaluation Project ( NDHEP ) was conducted by the National Animal Health Monitoring System (NAHMS ) from April 1991 through July 1992. A total of 921 producers monitored calves on a daily basis from the first through the eighth week of life; results were extrapolated to the U.S. dairy population. Mortality of heifer calves was examined according to region ( west, midwest, northeast, southeast ). Mortality was highest in the western region ( 9.1 percent ) and lowest in the midwestern region ( 5.6 percent ). Calf deaths were highest in the two quarters October-December and January-March ( 8.4 percent each quarter ) and lowest in the quarter April-June ( 5.2 percent ). The overall average of stillborn calves was 1.6 percent. Calving...
Tipo: Report
Palavras-chave: NAHMS; Dairy; Cattle; Monitoring; Epidemiology; Preweaning; Heifer; Production; Diseases; Morbidity; Mortality; Death; Illness; Respiratory; Reproduction; Digestive; Musculoskeletal; Nervous system; Mastitis; Maternity; Injections; Antibiotics; Milk replacer; Livestock Production/Industries.
Ano: 1993
URL: http://purl.umn.edu/32756

REFERENCE OF 1996 U.S. REGIONAL SHEEP HEALTH AND MANAGEMENT PRACTICES
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Wineland,   Nora.
In 1995, the National Animal Health Monitoring System (NAHMS) collaborated with the Research and Education Division of the American Sheep Industry Association (ASI) in developing a needs assessment tool to identify the most important health and productivity factors for the sheep industry. In collaboration with the USDA's National Agricultural Statistics Service (NASS), a statistically designed producer sample was selected to provide estimates for the United States sheep population in the 48 contiguous states.   The NAHMS/ASI questionnaires were mailed to 19,807 sheep operations in January 1996; data were received and summarized from 5,174 respondents. It was estimated that in the 48 contiguous states, there were approximately 8,433,400 sheep as of January...
Tipo: Report
Palavras-chave: NAHMS; Sheep; Health; Disease; Death; Morbidity; Mortality; Economics; Predators; Vaccinations; Antibiotics; Income; Worms; Reproduction; Profitability; Regions; Livestock Production/Industries.
Ano: 1996
URL: http://purl.umn.edu/32751

AS ESTRATÉGIAS DE REPRODUÇÃO DE SITIANTES NO OESTE DE MINAS GERAIS E DE
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Perondi,   Miguel Angelo; Ribeiro,   Eduardo Magalhaes.
This piece of study puts forward an analysis on the repoduction of family-agriculturists by means of the similar evidences found in two rural communities. Both the productive and the reproductive processes are simultaneous, and the continuous re-conversion of part of the production into new means re-creates the social and cultural conditions for the agriculturists' existence. The reproductive effort comes to the fore when one observes how family work is organized, how its successor is elected, how the estate growth occurs, and how they get to new agricultural or non-agricultural activities which will lead them to a financial improvement. This work starts off by presenting the theorical and book references used in the analisys of the studied problem. Later...
Tipo: Journal Article
Palavras-chave: Strategy; Reproduction; Family agriculture.
Ano: 2000
URL: http://purl.umn.edu/43292

REFERENCE OF 1996 U.S. SHEEP HEALTH AND MANAGEMENT PRACTICES
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Wineland,   Nora.
In 1995, the National Animal Health Monitoring System (NAHMS) collaborated with the Research and Education Division of the American Sheep Industry Association (ASI) in developing a needs assessment tool to identify the most important health and productivity factors for the sheep industry. In collaboration with the USDA's National Agricultural Statistics Service (NASS), a statistically designed producer sample was selected to provide estimates for the United States sheep population in the 48 contiguous states. The NAHMS/ASI questionnaires were mailed to 19,807 sheep operations in January 1996; data were received and summarized from 5,174 respondents. It was estimated that in the 48 contiguous states, there were 82,040 operations with sheep as of 1995;...
Tipo: Report
Palavras-chave: NAHMS; Sheep; Health; Disease; Death; Morbidity; Mortality; Economics; Predators; Vaccinations; Antibiotics; Income; Worms; Reproduction; Profitability; Livestock Production/Industries.
Ano: 1996
URL: http://purl.umn.edu/32743

Cymatium muricinum and other ranellid gastropods: major predators of cultured tridacnid clams.
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Govan,   Hugh.
Tipo: Report
Palavras-chave: Predators; Predation; Clam culture; Feeding behaviour; Reproduction; Recruitment; Environmental factors; Cymatium muricinum; Tridacnidae; Farm Management.
Ano: 1995
URL: http://purl.umn.edu/44728

Biologia reprodutiva de Butia capitata (Martius) Beccari var. odorata (Palmae) na restinga do município de Laguna, SC
Provedor de dados: Revista Brasileira de Botânica
Autores: ROSA,LIÉGE; CASTELLANI,TANIA TARABINI; REIS,ADEMIR.
Este estudo avaliou as características morfológicas, fenológicas e aspectos da biologia reprodutiva dos indivíduos de uma população de Butia capitata em uma restinga no litoral de Laguna, SC. Numa área de 2500 m2, foram registradas 215 plantas com altura média total de 86,39 cm (S= 27,39; min= 1 e máx= 311). Os indivíduos com altura igual ou inferior a 20 cm não apresentavam evidências de reprodução. A porcentagem de plantas reprodutivas aumentou entre plantas de maior porte, mas nem todos os indivíduos em fase reprodutiva floresceram em anos subseqüentes. Os parâmetros altura total e número de folhas, altura total e comprimento do limbo foliar, assim como número de folhas e número de infrutescências se apresentaram positivamente correlacionados. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butia capitata; Phenology; Reproduction; Sandy coastal vegetation.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000300007

Histórico de vida de espécimens selvagens e variantes cromáticas de Gracilaria birdiae (Gracilariales, Rhodophyta)
Provedor de dados: Revista Brasileira de Botânica
Autores: VIVIANE L.,COSTA; PLASTINO,ESTELA M.
(Gracilariales, Rhodophyta) é uma macroalga marinha de coloração vermelha (vm) comum na costa Nordeste do Brasil e amplamente coletada para a extração de ágar. O objetivo deste estudo foi completar o histórico de vida de espécimens selvagens (coloração vermelha) e variantes cromáticas. Duas variantes foram isoladas, além dos espécimens selvagens coletados na praia de Paracuru, Ceará: i, marrom-esverdeada (me), encontrada em uma população natural da praia de Paracuru; e ii, verde (vd), obtida espontaneamente in vitro a partir de um ramo tetrasporofítico. As condições gerais de cultivo tanto para gametófitos quanto para tetrasporófitos foram: meio de cultura von Stosch 25%; fotoperíodo 14L:10E (luz: escuro); irradiância 100 µm.m-2.s-1 e aeração a cada 30...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gracilaria; Life history; Chromatic variants; Reproduction.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000500003

Megaspore germination and initial development of Regnellidium diphyllum Lindman (Pteridophyta, Marsileaceae) sporophytes in the presence of cadmium
Provedor de dados: Revista Brasileira de Botânica
Autores: Wunder,Denise A.; Droste,Annette; Windish,Paulo G.
Regnellidium diphyllum has its distribution restricted to Southern Brazil and adjoining localities in Uruguay and Argentina. Currently it is on the list of threatened species of Rio Grande do Sul. The conversion of wetlands into agricultural areas or soil contamination by the introduction of waste products and fertilizers may compromise the establishment and survival of this species. Among the pollutants are heavy metals, such as cadmium (Cd). Megaspores were germinated in liquid culture medium, with concentrations 0 (control), 0.39; 0.78; 1.56; 3.12; 6.25; 12.5; 25; 50 and 100 mg L-1 of Cd, starting from a standard solution of Titrisol® at 1000 mg L-1. The increase of Cd in the growth medium to 50 mg L-1 resulted in low germinability (58%), and no...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Ecophysiology; Heavy metals; Pollution; Pteridophytes; Reproduction.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000100017

Morphology, reproduction and development of Hypoglossum hypoglossoides (Stackhouse) Collins &amp;amp; Hervey (Ceramiales, Rhodophyta) from the south and southeastern Brazilian coast
Provedor de dados: Revista Brasileira de Botânica
Autores: Horta,Paulo A.; Yokoya,Nair S.; Guimarães,Silvia M.P.B.; Bacci,Denise S.; Oliveira,Eurico C.
Hypoglossum hypoglossoides (Stackhouse) Collins &amp;amp; Hervey is reported for the first time from the infralittoral of São Paulo and Santa Catarina states. The species was already reported to the states of Rio de Janeiro, Espírito Santo and Bahia as Hypoglossum tenuifolium (Harvey) J. Agardh var. carolinianum Williams. A detailed description of the morphology and reproduction is given based on field-collected material. Unialgal cultures were initiated from tetraspore germination, and growth rates of gametophytes were determined under different conditions of temperature, photoperiod and irradiance. Gametophytes grew well between 15 to 30 ºC, 14L:10D and 10L:14D photoperiods and irradiance from 20 to 120 µmol photons.m-2.s-1, but presented low percentage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Delesseriaceae; Development; Hypoglossum hypoglossoides; Reproduction; Rhodophyta.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000400004

Pollination and other biotic interactions in figs of Ficus eximia Schott (Moraceae)
Provedor de dados: Revista Brasileira de Botânica
Autores: PEREIRA,RODRIGO AUGUSTO SANTINELO; SEMIR,JOÃO; MENEZES JR.,AYRES DE OLIVEIRA.
During the period from 1992 to 1997, interactions of several organisms and Ficus eximia figs, a monoecious species, were studied in plants located in Campinas/SP and Londrina/PR (Brazil). Ficus eximia is pollinated by a single fig wasp species, Pegoscapus sp. (Hymenoptera: Agaonidae, Agaoninae), but also visited by other 14 non-pollinating wasps (Agaonidae, Eurytomidae, Torymidae). Mites (Tarsonemidae), nematodes (Diplogasteridae) and fungi which use the body of the pollinating fig wasp to disperse themselves were also observed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant-animal interaction; Mutualism; Reproduction.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000200011

Quantitative variables applied to phenological studies of Sargassum vulgare C. Agardh (Phaeophyceae - Fucales) from Ilha Grande Bay, State of Rio de Janeiro
Provedor de dados: Revista Brasileira de Botânica
Autores: Széchy,Maria Teresa M. de; Galliez,Maron; Marconi,Márcia I.
The suitability of quantitative variables for phenological studies was evaluated in a population of the brown seaweed Sargassum vulgare from "Praia das Gordas", Angra dos Reis, Ilha Grande Bay, state of Rio de Janeiro. From June 1998 to May 1999, twenty adult individuals were randomly sampled at bimonthly intervals. Fifteen variables related to the vegetative and reproductive development of perennial and non-perennial parts of the individuals were quantified. Variables related to the non-perennial parts were more useful than those related to the perennial parts, because they showed a clear variation over the year. Vegetative development declined from June to October, and increased from October to February, when maximum median values of thallus height,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methodology; Reproduction; Sargassum; Temporal variation; Vegetative development.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000100004

Monostromatic green algae (Ulvales, Chlorophyta) of São Paulo and Paraná states (Brazil): distribution, growth, and reproduction
Provedor de dados: Revista Brasileira de Botânica
Autores: Braga,Maria do Rosário de A.; Fujii,Mutue T.; Cordeiro-Marino,Marilza.
(Monostromatic green algae (Ulvales, Chlorophyta) of São Paulo and Paraná states (Brazil): distribution, growth, and reproduction). Culture studies were used for taxa identification and to understand aspects of the biology and physiology of monostromatic green blades growing in various sites along the coast of São Paulo state (23º30'-25ºl2'S, 45º10'-48ºW) and one site in Paraná state (25º35'S, 48º21'W), southeast and south Brazil, respectively. Possible variations of the growth rate, age of reproduction and life history were tested under different conditions of temperature, salinity and day length. Two species were found: Ulvaria oxysperma (Kützing) Bliding and Monostroma sp. The first one has been previously reported for many temperate and tropical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ulvaria; Monostroma; Growth rate; Reproduction.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200010

Production and reproduction of egg- and meat-type quails reared in different group sizes
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Santos,TC; Murakami,AE; Fanhani,JC; Oliveira,CAL.
Egg- and meat-type quails were reared in groups of different sizes with a fixed female-to-male ratio of 2 to 1 and an area of 158 cm² per bird. The aim was to investigate the influence of group size on quail production and reproductive variables. To this end, 360 quails (180 meat and 180 egg-type quails) were assigned in a completely randomized experimental design to one of three treatments with ten replicates each. The treatments consisted of groups with nine, six, or three quails per cage. Birds were observed for three cycles of 14 days. Daily feed intake and feed conversion ratio were influenced (p &lt; 0.05) by group size in both types of quails. Quail type influenced (p &lt; 0.05) daily feed intake, feed conversion, and egg weight due to the typical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertility; Hatchability; Quail; Reproduction; Vitelline membrane.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100002

Effect of Photoperiod on the Egg Production, Plasma Luteinizing Hormone, Follicle-Stimulating Hormone, Gonadal Hormones, and Mrna Levels of Lh and Fsh in the Hypothalamic-Pituitary-Gonadal Axis of Pigeons
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Wang,Y; Li,YB; Yang,HM; Wang,ZY.
ABSTRACT We investigated the egg production, changes in luteinizing hormone (LH), follicle-stimulating hormone (FSH), gonadal hormones, and their mRNA levels in the hypothalamic-pituitary-gonadal axis of White King pigeons submitted to different photoperiods. The treatments consisted of three photoperiods (8 h light (L):16 h dark (D), 12L:12D, and 16L:8D), with three replicates of twelve pairs of adult pigeons. The birds were exposed the photoperiods for 45 days. Egg production performance was recorded daily. Six pigeon pairs per replicate were selected for plasma collection, and six pigeon pairs per replicate for the resection of the hypothalamic-pituitary-gonadal (HPG) axis. Egg production was significantly improved by long-day lighting (16L:8D), while...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Day lighting; Expression; Hormone; Pigeon; Reproduction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400314

Enterobacteria isolation in ostrich eggs (Struthio Camelus)
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Knöbl,T; Cappellete,CP; Vigilato,MAN.
This study was conducted to determine the presence of enterobacteria in the eggs of ostriches reared on a farm with a history of reproductive failure. Ninety samples from twenty eggs were submitted to bacteriological tests. The results showed Enterobacteria growth in 100% of the eggs. The microorganisms isolated were Hafnia alvei in 50% (10/20), Serratia spp. in 20% (4/20), Escherichia coli in 15% (3/20), and Citrobacter freundii in 15% (3/20). All eggs presented poor eggshell quality, which favored enterobacteria contamination. Hafnia alvei was present only in the internal egg structures (albumen and yolk sac), suggesting the possibility of vertical infection.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterobacteria; Hafnia alvei; Ostriches; Reproduction; Struthio camelus.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100006

Efeito da densidade de ninfas de Aphis gossypii Glover, 1877 (Hemiptera, Aphididae) no consumo alimentar e aspectos biológicos de Orius insidiosus (Say, 1832) (Hemiptera, Anthocoridae)
Provedor de dados: Revista Brasileira de Entomologia
Autores: Mendes,Simone M.; Bueno,Vanda H.P.; Carvalho,Lívia M.; Silveira,Luís Cláudio P.
Effect of ninfal density of Aphis gossypii Glover, 1877 (Hemiptera, Aphididae) on feed consumption and biological aspects of Orius insidiosus (Say, 1832) (Hemiptera, Anthocoridae). The influence of different densities of A. gossypii (10, 20, 30, 40, 50, 60 nymphs/day) on consumption rate, development time, survival, and reproduction of Orius insidiosus (Say, 1832) was investigated. The trials were carried out in climatic chamber at 25 ± 1 °C, 70±10% RH, and photoperiod 12:12h (L:D). Consumption rates of nymphs and adults increased under a linear form as the densities of aphids increased. Development time was longest when reared in 10 nymphs density (15.4 days). Nymphal survival was different under the densities of A. gossypii and no significant difference...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Development time; Generalist predator; Prey; Reproduction.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000100004

Diurnal flight periodicity of a Neotropical ant assemblage (Hymenoptera, Formicidae) in the Atlantic Forest
Provedor de dados: Revista Brasileira de Entomologia
Autores: Feitosa,Rodrigo M.; Silva,Rogério R. da; Aguiar,Alexandre P.
ABSTRACT In this study we document for the first time flight patterns along a 24 h time range for an ant assemblage in one of the most diverse ecosystems on Earth, the Brazilian Atlantic Forest. Malaise traps were used to analyze the diurnal nuptial flights of a Neotropical ant assemblage during five days. Traps captured 802 individuals, revealing a remarkably high diversity (42 ant species), with samples strongly male biased (1:22). Contrariwise to similar studies, we found only a small proportion of species engaged in nocturnal nuptial flights, with diurnal flights accounting for an impressive 95% of all ant flight activity recorded. For the 18 most common species, three ant groups could be identified regarding flight period: sunrise, sunset, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malaise; Phenology; Reproduction; Summertime; Swarm.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000300241

Biotic potential and reproductive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory
Provedor de dados: Revista Brasileira de Entomologia
Autores: Montezano,Débora Goulart; Specht,Alexandre; Sosa-Gómez,Daniel Ricardo; Roque-Specht,Vânia Ferreira; Barros,Neiva Monteiro de.
Biotic potential and reprodutcive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory: This study aimed to evaluate the biotic potential and reproductive parameters of Spodoptera eridania (Stoll, 1782) under controlled conditions (25 ± 1ºC, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity and fertility of 15 couples was evaluated. The longevity of females (10.80 days) was not significantly higher than those of males (9.27 days). The mean durations of the pre, post and oviposition periods were 2.067, 0.600 and 8.133 days, respectively. The mean fecundity per female was 1,398 eggs and the mean fertility was 1,367.50 larvae. On average, females copulated 1.133 times. A strong...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Armyworm; Development; Insecta; Reproduction; Spermatophore.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000300014

Orius insidiosus (Say, 1832) (Heteroptera, Anthocoridae): sensibilidade ao fotoperíodo e diapausa reprodutiva?
Provedor de dados: Revista Brasileira de Entomologia
Autores: Silveira,Luís Cláudio Paterno; Bueno,Vanda Helena Paes.
The minute pirate bugs, Orius spp., are known as predators on several pests as thrips, aphids, spider mites and whiteflies. Orius insidiosus is an important thrips predator, commercially used around the world. However, one of the main problems on biological control of thrips in temperate regions is the occurrence of reproductive diapause in Orius species. This characteristic promotes the interruption of biological control strategies when predators are exposed to short photoperiods. This research had as objective to evaluate the influence of different photoperiod conditions on eggs/nymphs and adults of O. insidiosus in laboratory. The trials were carried out through the combination of eggs/nymphs and adults reared under the photoperiods 10L:14D; 11L:13D;...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Development time; Photophase; Predator; Reproduction.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000400016

Fecundidade e longevidade de Aphis gossypii Glover, 1877 (Hemiptera, Aphididae) em diferentes temperaturas e cultivares comerciais de crisântemo (Dendranthema grandiflora Tzvelev)
Provedor de dados: Revista Brasileira de Entomologia
Autores: Soglia,Maria C. de M.; Bueno,Vanda H. Paes.; Rodrigues,Sandra M. M.; Sampaio,Marcus V.
Fecundity and longevity of Aphis gossypii Glover, 1877 (Hemiptera, Aphididae) at different temperatures and commercial chrysanthemum cultivars (Dendranthema grandiflora Tzvelev). The aphid A. gossypii is one of the main pests in a number of crops both under field and protected conditions. The objective of the present study was to evaluate the fecundity and longevity of A. gossypii under different temperatures and commercial chrysanthemum cultivars (Yellow Snowdon, White Reagan and Dark Splendid Reagan) with different trichomes densities (11.3; 16.6 and 21.6 trichome/mm² of the leaf, respectively) The trials were carried out in climatic chambers, at four temperatures (15, 20, 25 and 30 ±1 °C), 70 ± 10% RH and photophase 10h. The reproductive period...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphis gossypii; Biology; Reproduction; Trichome.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000100007

Autoecology of Dryadosaura nordestina (Squamata: Gymnophthalmidae) from Atlantic forest fragments in Northeastern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Garda,Adrian A.; Medeiros,Pedro H.S. de; Lion,Marília B.; Brito,Marcos R.M. de; Vieira,Gustavo H.C.; Mesquita,Daniel O.
Life history parameters such as diet, reproduction, and sexual dimorphism are crucial to understand ecological and evolutionary forces shaping species traits. Nevertheless, such information is scant in the literature for most Neotropical squamates. Gymnophthalmidae contains over 242 species in 46 genera and includes small-size, mostly terrestrial species, although psamophilic, semi-aquatic, and low vegetation dwellers also occur. Dryadosaura is a monospecific genus - Dryadosaura nordestina Rodrigues et al., 2005 - , occurring in Atlantic Forest areas from Rio Grande do Norte to Northern Bahia, and little is known about its ecology and natural history. We analyzed the species' diet, reproduction, and sexual dimorphism based on 170 specimens deposited in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Ecology; Lizard; Reproduction; Sexual dimorphism.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000500002

Annual male reproductive activity and stages of the seminiferous epithelium cycle of the large fruit-eating Artibeus lituratus (Chiroptera: Phyllostomidae)
Provedor de dados: Revista Brasileira de Zoologia
Autores: Notini,Alice A.; Farias,Talita O.; Talamoni,Sônia A.; Godinho,Hugo P.
The large fruit-eating phyllostomid bat, Artibeus lituratus (Olfers, 1818), forearm 69-75 mm, body mass 66-82 g, has a diversified geographic distribution in the Neotropical region. Therefore it is subjected to different climatic conditions that affect its reproduction, leading to different reproductive strategies such as continuous reproduction, seasonal monoestry or seasonal bimodal polyestry. In this study we used morphometric and histological methods to analyze the annual reproductive activity of A. lituratus males in a population living in the Atlantic Forest, Southeastern Brazil. Testis mass, epididymis mass, gonadosomatic index, seminiferous tubule diameter, and Leydig cell nucleus diameter showed no significant differences (p &gt; 0.05) in the two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphometry; Neotropical bat; Seminiferous epithelium; Spermatogenesis; Reproduction.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300195

Sexual and reproductive traits of the pearl oyster shrimp Pontonia margarita (Decapoda: Palemonidae), symbiotically inhabiting the mantle cavity of the rugose pen shell Pinna rugosa (Bivalvia: Pinnidae)
Provedor de dados: Revista Brasileira de Zoologia
Autores: García-Ulloa,Diego; Landa-Jaime,Víctor; Góngora-Gómez,Andrés Martín; García-Ulloa,Manuel; Hernández-Sepúlveda,Juan Antonio.
ABSTRACT Symbiosis between decapods and mollusks provides a unique opportunity to examine some of the evolutionary strategies employed by marine invertebrates. We describe the sexual and reproductive traits of the pearl oyster shrimp, Pontonia margarita Verril, 1869, found symbiotically inhabiting the mantle cavity of the rugose pen shell, Pinna rugosa Sowerby, 1835. Solitary males and females (ovigerous and non-ovigerous) and heterosexual pairs (with ovigerous and non-ovigerous females) were found in a total of 47 rugose pen shells collected from a sandy area with seagrass meadows on the southeastern coast of the Gulf of California, Mexico. The body length (BL) of female P. margarita was correlated with the shell volume of their rugose pen shell host. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monogamy; Promiscuity; Reproduction; Sex ratio; Shrimp-pen shell association.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100312

Life cycle of Poratia salvator (Diplopoda: Polydesmida: Pyrgodesmidae)
Provedor de dados: Revista Brasileira de Zoologia
Autores: Pinheiro,Tamaris G.; Marques,Marinêz I.; Battirola,Leandro D.
Even though millipedes display high plasticity in their reproductive strategies, they are poorly studied in the tropical region. The present study describes the biological cycle and reports the parthenogenetic reproduction of Poratia salvator Golovatch &amp;amp; Sierwald, 2000 under environmental conditions. Collections were carried out in Pantanal of Mato Grosso and in Várzea Grande, state of Mato Grosso, Brazil. The individuals were kept at room temperature in individual plastic pots. All 18 females used in the experiment reproduced parthenogenetically, resulting in a total of 699 young individuals. Of these, 18% survived until the adult phase. The lowest survival rate of P. salvator was recorded for the first developmental stage (46%). The mean duration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Life history; Mato Grosso; Millipedes; Parthenogenesis; Reproduction.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400010

A new record of giant squid Architeuthis sp. (Cephalopoda: Oegopsida) in Brazilian waters
Provedor de dados: Revista Brasileira de Zoologia
Autores: Martins,Rodrigo Silvestre; Perez,José Angel Alvarez.
A carcass of a giant squid Architeuthis sp. was found afloat off Southern Brazil (28°05'S, 45°35'W) on 29 August 1999. The specimen was a mature female of 116 cm mantle length and had arms incomplete and tentacles missing. The specimen was morphologically similar to those previously described for the Southwest Atlantic, but a few peculiarities were found on the shape of the fins, head and the cross-section and length of ventral arms. Spermatophores were found embedded within the skin of the left ventral arm, at around 60 cm from the mouth, and could be traced to the core of the arm, radiating nearly four centimeters from the point of entry. This was the third record of Architeuthis in Brazilian waters and the eighth in Southwest Atlantic when the specimen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Occurrence; Morphology; Reproduction; Southwest Atlantic.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400005

Natural history of Micrablepharus maximiliani (Squamata: Gymnophthalmidae) in a Cerrado region of northeastern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Dal Vechio,Francisco; Recoder,Renato; Zaher,Hussam; Rodrigues,Miguel Trefaut.
Micrablepharus maximiliani (Reinhardt &amp;amp; Luetken, 1861) is a microteiid lizard widely distributed in the open areas of South America. Little is known about its ecology and reproductive biology. Here, we analyzed aspects of the natural history of a population of M. maximiliani from a Cerrado area in the state of Piauí, northeastern Brazil. Our results suggest that the reproductive activity of M. maximiliani might be seasonal in the Cerrado, since reproductive females were observed only in the dry season, whereas reproductive males were present in both seasons. Vitellogenic follicles and oviductal eggs were found simultaneously in one female, suggesting that females may produce more than one clutch per season. Sexual dimorphism was observed in body...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Ecology; Lizards; Reproduction; Sexual dimorphism.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000200002

Biotic potential and reproductive parameters of Spodoptera dolichos (Lepidoptera: Noctuidae) in the laboratory
Provedor de dados: Revista Brasileira de Zoologia
Autores: Montezano,Débora G.; Sosa-Gómez,Daniel R.; Paula-Moraes,Silvana V.; Roque-Specht,Vânia F.; Fronza,Edegar; Barros,Neiva M.; Specht,Alexandre.
ABSTRACT The biotic potential and reproductive parameters of Spodoptera dolichos (Fabricius, 1794) were evaluated under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 25 couples were evaluated. The longevity of females (12.9 days) was not significantly different than that of males (12.4 days). The mean durations of the pre-, post- and oviposition periods were 3.0, 0.4 and 10.4 days, respectively. The mean fecundity was 4,086.0 eggs per female and mean fertility was 3,557.8 larvae per female. On average, a female copulated 1.4 times. The biotic potential of S. dolichos was estimated at 7.138 x 1018 individuals/female/year. The net reproductive rate (Ro)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600485

Ecology of the snake Atractus paraguayensis (Dipsadidae) in southern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Zanella,Noeli; D’Agostini,Fernanda.
ABSTRACT Knowledge of snake ecology is important to support conservation strategies. Atractus paraguayensis Werner, 1924 is a dipsadidae with semi fossorial habits distributed throughout southern Brazil. We analyzed the morphology, seasonality and reproductive biology of this species in a subtropical area in southern Brazil by combining material from scientific collections and field data. We found that females have a larger body size than males and that the reproductive cycle of females is seasonal, with vitellogenesis occurring in the warmer months of the year. Males exhibited no differences in testicle volume throughout the year; however, mating likely occurs in the spring when males are more active. Recruitment of newborns occurs in late summer. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity patterns; Reproduction; Seasonality; Subtropical region.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100314

Ecology of Ischnocnema parva (Anura: Brachycephalidae) at the Atlantic Rainforest of Serra da Concórdia, state of Rio de Janeiro, Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Martins,Ana Cristina J. S.; Kiefer,Mara C.; Siqueira,Carla C.; Van Sluys,Monique; Menezes,Vanderlaine A.; Rocha,Carlos Frederico D.
Ischnocnema (Brachycephalidae) includes many species that are important members of the leaf litter frog communities in the Atlantic Rainforest of Brazil. Ischnocnema parva (Girard, 1853) is endemic to the Atlantic Rainforest biome and is restricted to the forests of southeastern Brazil. Currently, the available information about the ecology of I. parva is scarce. We studied the diet, the habitat use, reproduction and density of I. parva in an area of Atlantic Rainforest at the Concórdia mountain range, Rio de Janeiro. Individuals of I. parva were captured in April 2005 using different sampling methods: time constrained search (transects), plots of 5 x 5 m (25 m²) on the litter, and pitfall traps with drift fences. We found 240 frogs; 35 females and 205...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity; Density; Diet; Habitat use; Reproduction.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200007

Foam nest in Scinax rizibilis (Amphibia: Anura: Hylidae)
Provedor de dados: Revista Brasileira de Zoologia
Autores: Bastos,Rogério P.; Haddad,Célio F. B.; Pombal Jr,José P.
During the intervals of February 1993 to January 1994 and November 1994 to February 1995, in the southern São Paulo state, we studied the breeding activity of Scinax rizibilis (Bokermann, 1964), the only known hylid species with oviposition in foam nests. The foam nests were constructed by female jumps, during the oviposition. The clutches contained 850-1250 eggs, which were almost black, except for the small clear vegetative pole. The construction of foam nest in S. rizibilis is unique among the other species with this characteristic. The complexity of a foam nest is intermediate, and egg development was faster when eggs were surrounded by foam. It is possible to recognize a progression from less developed structures, represented by the bubble nests of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oviposition; Reproduction; Treefrog.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600007

Population structure and reproductive biology of Uca rapax (Decapoda: Ocypodidae) in a tropical coastal lagoon, southeast Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Costa,Tarso; Soares-Gomes,Abilio.
A population of the fiddler crab Uca rapax (Smith, 1870) found in Itaipu Lagoon, southeast Brazil, was sampled monthly from July 2006 to June 2007 in order to study population and reproductive features. The sex ratio of the population was statistically different from the expected (1:1) in almost every month, with a predominance of males. The reproductive cycle and the recruitment of juveniles were continuous, with two peaks. The fecundity ranged from 1.110 to 13.189 eggs (4.984 ± 2.493.8), not differing statistically among seasons. In contrast, the relative fecundity (F') and the reproductive intensity index (RII) were highest in the summer. Female size at the onset of sexual maturity was estimated as 6.1 mm and egg diameter ranged from 0.20 to 0.28 mm....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fiddler crab; Fecundity; Reproduction; Sex ratio.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400009

Reproductive biology of Echinanthera cyanopleura (Serpentes: Dipsadidae) in southern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Zanella,Noeli; Cechin,Sonia Z.
The reproductive cycles of snakes can be influenced by many factors, both biotic and abiotic, and information about these factors can contribute significantly to knowledge of the biology of many species. Here, we present data on the reproductive biology (body size, sexual dimorphism and female reproductive cycle) of the forest-dwelling colubrid Echinanthera cyanopleura (Cope, 1885), based on analyses of 128 specimens preserved in collections and originating from the states of Paraná, Santa Catarina, and Rio Grande do Sul in southern Brazil. The snout-vent length of females was significantly greater than in males. The tail length of mature females was greater than in males, although this difference was not significant. Vitellogenesis occurs from August to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Serpents; Sexual dimorphism.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000100005

Morphology, morphometry and ultrastructure of the Amazonian manatee (Sirenia: Trichechidae) spermatozoa
Provedor de dados: Revista Brasileira de Zoologia
Autores: Amaral,Rodrigo S.; Lucci,Carolina M.; Rosas,Fernando C. W.; Silva,Vera M. F. da; Báo,Sônia N.
This study describes the morphological, morphometric and ultrastructural characteristics of the Amazonian manatee Trichechus inunguis (Natterer, 1883) spermatozoon. The spermatozoa were obtained from a urine sample of an adult T. inunguis kept in captivity. The spermatozoa were analyzed by light and transmission electron microscopy. The head of Amazonian manatee spermatozoa had a flat oval shape and a well distinguishable midpiece. The mean dimensions of the spermatozoa were: head length, 7.49 ± 0.24 µm; head width, 3.53 ± 0.19 µm; head thickness, 1.61 ± 0.13 µm; midpiece length, 11.36 ± 0.34 µm; flagellum length, 40.91 ± 1.94 µm; total tail length, 52.16 ± 1.06 µm; total spermatozoon length, 60.08 ± 1.40 µm. The Amazonian manatee spermatozoa were similar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Reproduction; Sirenians; Spermatozoon; Trichechus inunguis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600025

Growth and reproductive biology of the amphidromous shrimp Palaemon pandaliformis (Decapoda: Caridea) in a Neotropical river from northeastern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Paschoal,Lucas R.P.; Guimarães,Fernanda J.; Couto,Erminda C.G.
ABSTRACT Population biology, growth and reproductive aspects of the amphidromous shrimp Palaemon pandaliformis (Stimpson, 1871) were investigated in a Neotropical river of northeastern Brazil. The specimens were collected every month from September 2009 to August 2010. Total and monthly sex ratios deviated in favour of males. Von Bertalanffy growth parameters indicated that the females grew more rapidly, reached larger sizes, and had a longer life span than males. We also observed continuous reproductive activity and juvenile recruitment throughout the year. Relations between the number of eggs (fecundity) and body size indicated that fecundity in females increase with size. Compared with previous results, some population biology parameters of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphometric relationships; Palaemonidae; Population biology; Reproduction; Sexual dimorphism.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000600501

Reproductive responses of the male Brandt’s vole, Lasiopodomys brandtii (Rodentia: Cricetidae) to tannic acid
Provedor de dados: Revista Brasileira de Zoologia
Autores: Dai,Xin; Zhou,Ling-Yu; Xu,Ting-Ting; Wang,Qiu-Yue; Luo,Bin; Li,Yan-Yu; Gu,Chen; Li,Shi-Ping; Wang,Ai-Qin; Wei,Wan-Hong; Yang,Sheng-Mei.
ABSTRACT Tannins are polyphenols that are present in various plants, and potentially contain antioxidant properties that promote reproduction in animals. This study investigated how tannic acid (TA) affects the reproductive parameters of male Brandt’s voles, Lasiopodomys brandtii (Radde, 1861). Specifically, the anti-oxidative level of serum, autophagy in the testis, and reproductive physiology were assessed in males treated with TA from the pubertal stage. Compared to the control, low dose TA enhanced relative testis and epididymis weight and sperm concentration in the epididymis, and significantly increased the level of serum superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px). mRNA levels of autophagy related genes LC3 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidative; Autophagy; Puberty; Reproduction.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100319

Analysis of reproductive biology and spawning season of the pink ear emperor Lethrinus lentjan , from marine ecosystem
Provedor de dados: Revista Brasileira de Zoologia
Autores: Younis,Elsayed M.; Al-Asgah,Nasser A.; Abdel-Warith,Abdel-Wahab A.; Gabr,Mohamed H.; Shamlol,Fozi S.
ABSTRACT A total of 593 samples of Lethrinus lentjan (Lacepede, 1802) were collected from the Red Sea, Jeddah, Saudi Arabia, to study their productive biology and spawning season of the local population. Sampling was carried out on a monthly basis for a period of one year. The monthly sex ratios indicated that females were dominant throughout the study period, with an overall male:female sex ratio of 1:7.98, although males were larger than females. The highest monthly performance maturation index (PMI), as well as the male and female gonadosomatic index (GSI) and ovarian maturation rate (OMR) were observed in February and March. Histological examination of the gonads confirmed the process of sexual transformation in this fish species, wherein individuals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lethrinus lentjan; Red sea; Reproduction; Spawning.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100308

Reproductive biology of the swamp racer Mastigodryas bifossatus (Serpentes: Colubridae) in subtropical Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Leite,Pedro T.; Nunes,Simone de F.; Kaefer,Igor L.; Cechin,Sonia Z.
The swamp racer Mastigodryas bifossatus (Raddi, 1820) is a large snake of Colubrinae. It is widely distributed in open areas throughout South America. Dissection of 224 specimens of this species housed in herpetological collections of the southern Brazilian states of Rio Grande do Sul, Santa Catarina and Paraná provided information on its sexual dimorphism, reproductive cycle and fecundity in subtropical Brazil. Adult specimens of M. bifossatus average approximately 1190 mm in snout-vent length and females are larger than males. The reproductive cycle of females is seasonal, with secondary vitellogenesis occurring from July to December. However, examination of male gonads did not reveal signs of reproductive seasonality in this sex. Egg laying was recorded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fecundity; Neotropics; Reproduction; Reproductive cycle; Sexual dimorphism.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000100003

Seasonal variations in scorpion activities (Arachnida: Scorpiones) in an area of Caatinga vegetation in northeastern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Araújo,Cristiane S.; Candido,Denise M.; Araújo,Helder F. P. de; Dias,Sidclay C.; Vasconcellos,Alexandre.
Seasonal variations in scorpion activity were investigated during a 24 month period in an area of Caatinga (dryland) vegetation in the state of Paraíba, Brazil. The total number of scorpions captured was correlated with climatic variables and prey abundance. Scorpions were captured monthly using pitfall traps; their potential prey was captured using malaise, beating trays and pitfalls. A total of 104 scorpions were captured, representing four species: the bothriurids Bothriurus asper (Pocock, 1893) (n = 74; 71.2%) and B. rochai (Mello-Leitão, 1932) (n = 20; 19.2%), and the buthids Rhopalurus rochai (Borelli, 1910) (n = 4; 3.8%) and Tityus stigmurus (Thorell, 1876) (n = 1; 1.0%). The sex ratios (male:female) of the two most abundant species were 14:1 for B....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental factors; Neotropical region; Reproduction; Semi-arid; Seasonality.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300008

Observations on the mating behavior of the eastern lowland olingo Bassaricyon alleni (Carnivora: Procyonidae) in the Peruvian Amazon
Provedor de dados: Revista Brasileira de Zoologia
Autores: Williams,Sean M.
ABSTRACT The behavior of wild olingos is poorly known. From May-Jul 2015, I surveyed nocturnal mammals in southeast Peru and recorded the behavior of olingos. Multiple olingos were observed in close proximity on four occasions: two occasions in which multiple olingos were feeding on the inflorescences of a Parkia pendula tree; an adult and immature olingo traveling together; and a pair of olingos copulating. The copulation lasted at least 142 minutes, and was characterized by the male biting the hind neck and back of the female, constant female vocalizations, and rapid head turning by the female toward the male. Olingos and kinkajous were similarly abundant. These observations offer insight into the behavior of the wild olingo.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Natural history; Procyonidae; Reproduction; Sexual behavior.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000304002

Reproductive biology in the starfish Echinaster (Othilia) guyanensis (Echinodermata: Asteroidea) in southeastern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Mariante,Fátima L. F.; Lemos,Gabriela B.; Eutrópio,Frederico J.; Castro,Rodrigo R. L.; Gomes,Levy C.
Echinaster (Othilia) guyanensis Clark, 1987 is an endangered starfish distributed throughout the Caribbean and Atlantic Ocean. Even though it has been extensively harvested, little is known about the biology and ecology of this starfish. Here, we examine reproduction seasonality in E. (O.) guyanensis. Individuals were collected monthly for one year, including four complete lunar phases. The gonad index (GI) was calculated to determine annual and monthly reproductive peaks. Gametogenesis stages were also determined. Sex ratio was 1:1.33 (M:F). Gonadosomatic index, body weight, central disc width and arm length were similar for both sexes. Gonads were present in all animals with arm length greater than 36.2 mm. Lunar phase was not associated with E. (O.)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Reproduction; Gametogenesis; Gonad index; Lunar periodicity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600010

The effects of rainfall and arthropod abundance on breeding season of insectivorous birds, in a semi-arid neotropical environment
Provedor de dados: Revista Brasileira de Zoologia
Autores: França,Leonardo Fernandes; Figueiredo-Paixão,Victória Helen; Duarte-Silva,Thales Afonso; Santos,Kamila Barbosa dos.
ABSTRACT Rainfall in tropical semi-arid areas may act as a reliable cue for timing bird reproduction, since it precedes future food supply. With this in mind, we set-up a study to test the reproductive response of insectivorous bird to arthropod abundance and rainfall patterns. Sampling occurred in a seasonally dry Neotropical forest, in north-eastern Brazil, between October, 2015 and October 2016, at 14-day intervals. We used brood patch to assess reproductive periodicity of insectivorous birds (eight species, 475 captures, 121 patch records). We sampled arthropods to quantify abundance, using biomass and number of individuals (1755 individuals, 15 Orders). Rainfall temporal distribution was analyzed using daily precipitation data. We used a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brood patch; Caatinga; Food-mediated process; Insect; Reproduction.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100312

Biology, distribution and geographic variation of loliginid squids (Mollusca: Cephalopoda) off southwestern Atlantic
Provedor de dados: Revista Brasileira de Zoologia
Autores: Martins,Rodrigo Silvestre; Juanicó,Marcelo.
ABSTRACT The biology and ecology of southwestern Atlantic loliginid squids have been intensively researched in the last few decades, mostly off the Brazilian southern coast. However, information gathered by scientific research cruisers, either past or recent, is limited. Three species of loliginid squids - the warm-tempered Doryteuthis sanpaulensis (Brakoniecki, 1984), plus the tropical D. pleii (Blainville, 1823) and Lolliguncula brevis (Blainville, 1823) - were sampled along 16 degrees of latitude on the southwestern Atlantic (22-38°S). The samples were obtained mostly from oceanographic surveys, but also included squids caught by commercial fisheries, and a few specimens from museum collections. Squid response to abiotic variables, morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Morphology; Myopsida; Population biology; Reproduction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100337

Larval and adult density of the porcellanid crab Petrolisthes armatus (Anomura: Porcellanidae) in an Amazon estuary, northern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Oliveira,Danielly Brito de; Silva,Dalila Costa; Martinelli-Lemos,Jussara Moretto.
Petrolisthes armatus (Gibbes, 1850) is a porcellanid crab with a wide geographical distribution. In the present study we analyzed variations in the abundance of P. armatus adults and larvae over an annual cycle in the Marapanim estuary of the Amazon coastal zone, in the northeastern portion of the state of Pará, Brazil. Particularly, we focused on the presence of ovigerous females and timing of larval release, with the aim of elucidating reproductive patterns in a tropical estuarine system. The mean density of P. armatus larvae (zoea I and II) correlated positively with the salinity of the shallow waters of the estuary, whereas the abundance of adults correlated with the salinity registered in water samples collected from the benthic environment. There was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapoda; Macrobenthos; Reproduction; Zooplankton.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000600002

Correlation between urinary tract infection and reproductive performance of sows
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Moura,Rafael de; Caldara,Fabiana Ribeiro; Foppa,Luciana; Machado,Simone Pereira; Nääs,Irenilza de Alencar; Garcia,Rodrigo Garófallo; Gonçalves,Liliane Maria Piano.
ABSTRACT This study aimed to assess the prevalence and influence of urinary tract infection on the reproductive performance of sows. The animals underwent urine tests using reagent strips and diagnosed as positive or negative. They were then divided into two groups of 30 positive and 30 negative sows for urinary tract infection. Each sow was considered an experimental unit and was followed from labor to weaning. The animals were assessed for their reproductive performance (labor duration, number of live births, mummified piglets, and stillbirths, and postpartum diseases). After weaning, the weaning-estrus interval and rate of return to estrus were assessed. A thermographic camera was used to identify hyperthermia of the mammary system and its relation with...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Animal health; Cystitis; Mortality; Pigs; Reproduction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100410

Induction of puberty and synchronization of estrus in gilts with eCG and GnRH
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Labêta,Camilla Pereira de Souza; Vasconcelos,Bruno da Silva de; Mello,Marco Roberto Bourg de.
ABSTRACT In this study, we investigated the effects of eCG and GnRH on the induction of puberty in prepubertal gilts and evaluated the pregnancy rate and litter size in these females. Thirty 140-day-old gilts with an average weight of 80 kg were randomly divided into two treatments: hormonal treatment (n = 15): 1000 IU of eCG and 50 μg of GnRH; and control group (n = 15): induction of estrus by male presence. Gilts were inseminated at the second estrus and pregnancy was confirmed by the non-return to estrus. At farrowing, litter size, average piglet weight, and number of stillborn and mummified piglets were recorded for analysis. The variable pregnancy rate was subjected to the Chi-square test (χ2), while variables age at first estrus, weight at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal production; Reproduction; Swine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100413

Evaluation of the reproductive performance of rabbits does fed a half-simplified diet based on cassava byproducts
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Oliveira,Andréia Fróes Galuci; Scapinello,Cláudio; Leite,Meiby Carneiro de Paula; Motta,Ana Carolina Monteiro; Figueira,Josianny Limeira; Catelan,Fernanda; Retore,Marciana.
A total of 70 five-month-old female New Zealand White rabbits were assigned in a completely randomized design, over three reproductive cycles, with two treatments: a reference diet and a half-simplified diet containing 79.83% cassava byproduct. The study evaluated body weight and feed intake of does, feed cost, number and total body weight of kits at kindling and weaning per female during three cycles, number and percentage of mortality/female/cycle, and weight gain of kits from birth to weaning. No interaction was observed between the diets and among the reproductive cycles for any evaluated characteristics. The body weight of does at the moment of weaning was similar in both groups for all three reproductive cycles. However, does fed the half-simplified...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cassava meal; Hay from the upper third of cassava foliage; Reproduction.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100025

Reproductive performance of female Nile tilapia ( Oreochromis niloticus ) fed diets with different digestible energy levels
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Orlando,Tamira Maria; Oliveira,Marinez Moraes de; Paulino,Renan Rosa; Costa,Adriano Carvalho; Allaman,Ivan Bezerra; Rosa,Priscila Vieira.
ABSTRACT This study aimed to evaluate the reproductive performance of female Nile tilapia (Oreochromis niloticus) fed diets containing different levels of digestible energy (DE). The fish were housed in 15 fiberglass tanks (500 L) in a recirculating system at an average temperature of 27.5 °C. The treatments consisted of five diets with increasing levels of DE (3,200; 3,400; 3,600; 3,800; and 4,000 kcal/kg). The levels of DE did not significantly influence the final weight or the hepatosomatic, gonadosomatic, and visceral fat indices. The absolute fecundity was influenced by the treatments, for which the highest values were observed from the 3,600 kcal/kg DE level and upward. The proximate composition of the fish also had a significant effect on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Fecundity; Fish; Nutrition; Reproduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100001

Insulin addition to swine semen diluted and cooled at 15 ºC
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Cunha,Evandro César Pereira; Zangeronimo,Márcio Gilberto; Murgas,Luis David Solis; Braga,Douglas Evangelista; Pereira,Bárbara Azevedo; Rocha,Luiz Gustavo Pessoa; Faria,Bruno Generoso; Pereira,Luciano José.
The objective of this study was to evaluate the effect of adding different doses of insulin to swine semen processed and stored at 15 ºC. The experiment used sixteen ejaculates from four commercial breeding pigs, distributed in a randomized block design (ejaculate) with split plot along time (0, 24, 48 and 72 hours of storage) with four treatments (insulin levels - 0.0 4.0 8.0 and 12.0 IU per dose) and 16 repetitions. The experimental unit was made of two insemination doses of 100 mL each, with 3×10(9) spermatozoids. Insulin used was NPH-human, added at the time of processing the doses. The addition of insulin did not affect motility, sperm viability, the percentage of abnormal cells, the osmotic resistance or the degradation rate of motility in 120...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial insemination; Boar; Hormone; Metabolism; Sperm; Reproduction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400031

Effects of the spermatozoa: oocyte ratio, water volume and water temperature on artificial fertilization and sperm activation of cascudo-preto
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Bombardelli,Robie Allan; Sanches,Eduardo Antônio; Baggio,Diego Mendes; Sykora,Renata Marino; Souza,Bruno Estevão de; Tessaro,Lucélia; Piana,Pitágoras Augusto.
The objective of this study was to evaluate the effects of water volume and water temperature on the sperm motility duration and the number of spermatozoa, and the water volume on the fertilization rates of oocytes of Rhinelepis aspera. Experiments were carried out to evaluate the effect of semen dilutions (1.74×10-5, 1.74×10-4, 1.74×10-3, 1.74×10-2, 1.74×10-1 and 1.00 mL of sperm.mL-1 of water) and water temperature (5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 ºC) on spermatozoa motility duration. In addition, the effects of insemination dose (7×10³, 7×10(4), 7×10(5), 7×10(6) and 7×10(7) spermatozoa.oocyte-1) and water volume (1.0, 30.0, 60.0, 90.0 and 120.0 mL water.2.0 mL-1 oocytes) on the artificial fertilization rates of oocytes were evaluated. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Loricariidae; Oocyte; Reproduction; Semen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100001

Environmental effects and repeatability of the follicular diameter in mares
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Rua,Miguel Alejandro Silva; Quirino,Celia Raquel; Matos,Luis Fonseca; Rodrigues,Ana Cláudia Cerqueira; Bartholazzi Junior,Aylton.
ABSTRACT The objective of this study was to evaluate the effect of environment on follicular diameter and repeatability of the size of preovulatory follicles of mares. Temperature, rainfall, and photoperiod were measured, and their effects were evaluated on follicular dynamics. Data were studied by analysis of variance of follicular size and environment traits. During the five years, 7% double ovulations and 159 anovulatory follicles were recorded. Mean preovulatory follicle diameters of left and right ovaries were 39.3±3.8 and 39.2±3.5 mm respectively. There was no effect of evaluation year on follicular diameter. Reproduction season affected the right preovulatory follicle diameter. There was no effect of temperature and rainfall on follicular diameter....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Female; Horse; Reproduction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100605

Artificial fertilization of oocytes and sperm activation in pacu: effects of the spermatozoa:oocyte ratio, water volume, and in natura semen preservation
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Sanches,Eduardo Antônio; Baggio,Diego Mendes; Piana,Pitágoras Augusto; Souza,Bruno Estevão de; Bombardelli,Robie Allan.
The objective of this work was to investigate artificial fertilization and the duration of sperm motility in pacu with different insemination doses, water volume, and in natura semen preservation. It was carried out four experimentsfor evaluation of insemination doses (7x10³, 7x10(4), 7x10(5), 7x10(6), and 7x10(7) spermatozoa oocytes-1) on the artificial fertilization of oocytes; the effect of water volume (0.5, 15.0, 30.0, 45.0, and 60.0 mL water mL-1 of oocyte) with insemination doses of 105,481 and 210,963 spermatozoa oocytes-1; the effect of semen dilutions (0.005, 0.05, 0.5, and 5.0 µL semen mL-1 of water) on sperm motility duration; and the effect of storage at 15ºC for 9h on sperm motility duration and sperm survival ratio. The highest results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Gametes; Insemination doses; Myleinae; Reproduction.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100001

Frequency of estrus in Santa Inês, Texel and Ile de France ewes in the northwest of Paraná State, Brazil
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Moraes,Gentil Vanini de; Macedo,Francisco de Assis Fonseca de; Lourenço,Fábio José; Macedo,Filipe Gomes de; Rigolon,Luiz Paulo; Nogueira,Guilherme de Paula; Santello,Graziela Aparecida.
The incidence of estrus in nulliparous Santa Inês (n = 16), Texel (n = 16) and Ile de France (n = 15) ewes fed two levels of crude protein (CP, 12 or 16%) was monitored from July 2005 to December 2006, and seasonality in the Santa Inês breed in the south of Brazil was characterized. The solar radiation data were recorded daily, and samples of blood were collected biweekly for determination of the plasma concentration of progesterone in Santa Inês lambs at, on average, 11±1 months of age. The female Santa Inês lambs, in the experimental period, stayed among teaser rams with a powdered-dye-ink mixture placed on their chest to mark the females that accepted to be mounted. Santa Inês ewes did not manifest estrus in the first fortnight of November and in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Photoperiodic; Progesterone; Reproduction; Seasonality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000003

Growth of Nile tilapia post-larvae from broodstock fed diet with different levels of digestible protein and digestible energy
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Sousa,Silia Maria de Negreiros; Freccia,André; Santos,Lilian Dena dos; Meurer,Fábio; Tessaro,Lucélia; Bombardelli,Robie Allan.
This study was carried out to evaluate the influence of different levels of digestible energy and digestible protein in diets of Nile tilapia (Oreochromis niloticus) broodstock on offspring growth during sex reversal stage. A total of 2,700 post-larvae (8.2±0.001 mg) derived from breeders fed nine diets with distinct levels of digestible protein (28, 34 and 40% DP) and digestible energy (2,800; 3,400; and 4,000 kcal DE.kg-1) were stored in twenty-seven 70 L tanks. After 30 days of growth, their average final weight (AFW, g), average weight gain (AWG, g), final standard length (SL, cm), condition factor (CF), specific growth rate (SGR, %/day), stock uniformity (UNI, %), survival (SUR, %) and sex reversal rate (SRR, %) were measured. Although female...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fry; Nutrition; Oreochromis niloticus; Reproduction; Sex reversal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800001

Effect of adenosine concentration on quality of cooled ram semen
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Bezerra,Andréia Santana; Nascimento,Thialla Emille Costa do; Castilho,Erick Fonseca de; Gonçalves,Natália Larissa Cunha; Silva,Sillas Matteus Batista Soares da; Cardoso,Aline Serrão; Souza,Heloíse Karine Rolim de; Rodrigues,Luiz Fernando de Souza.
ABSTRACT This study analyzed the adenosine concentration on quality of ram semen in different refrigerated storage times at 5 °C. The design was in blocks with repeated-measures factorial design. Five levels of adenosine and four refrigeration times were considered as fixed effects and the animal as random effect (block). Ram semen was diluted with Andromed® diluent (control) and increasing adenosine levels (0.5, 0.75, 1, and 1.5%). The samples were taken from refrigeration after 4, 8, 12, and 16 h and evaluated for progressive rectilinear sperm motility, sperm vigor, and membrane integrity (supravital test). Data were subjected to analysis of variance with Tukey's test. The regression analysis was conducted to evaluate behavior of adenosine levels. Factor...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Nucleoside; Oxidative stress; Purinergic; Reproduction; Spermatozoon.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100606

Biotechnology applied to salmoniculture
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Isler,Iván Valdebenito.
This work presents a conceptual analysis of the main biotechnologies used in Chilean salmoniculture, which is based on the production of Atlantic salmon (Salmo salar, 356.407 t),silver salmon or coho (Oncorhynchus kisutch, 116.481 t), (O. tshawytscha, 2.062 t) and rainbow trout (O. mykiss, 189.178 t).These activities are focused on the photoperiod artificial manipulation to obtain out-of-season spawning, in the use of hormonal therapies which allow synchronizing the final oocyte maturation (FOM) and sexual maturity acceleration or the increase in milt volume produced by males. Such actions are carried out using GnRHa in doses close to 10 µg/kg of fish. Once sexual maturity is reached, in vitro manipulation of gamets must often be done due to either the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotechnology; Induced spawning; Photoperiod; Reproduction; Sex manipulation; Thermoperiod.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300004

Influence of low-stress handling on reactivity score and pregnancy rate during fixed-time artificial insemination in Nellore cows
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Tirloni,Rayf Roberto; Rocha,Fábio Alcântara; Lourenço,Fábio José; Martins,Lílian Rigatto.
The objective of this work was to evaluate the influence of low-stress handling (LSH) on reactivity score and pregnancy rate during fixed-time artificial insemination (FTAI) for extensively raised Nellore cows. Multiparous cows (n = 126) were randomly allocated into two groups: G1 (n = 66) and G2, the control group (n = 60). Group G1 was subjected to LSH, in which the animals were handled in a calm and quiet manner, without loud noises or physical aggression, using the point of balance, respecting the flight zone and using flags to supplement handling. Group G2 was handled following the typical procedure, with yelling, kicking and the use of electric prods and sticks. On D0, D8 and D10, FTAI was performed in both groups. Reactivity was scored on D0, D8 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bos indicus cattle; Conception; Reaction; Reproduction; Stress.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700002

Reproductive parameters of Sindhi cows (Bos taurus indicus) treated with two ovulation synchronization protocols
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Mello,Raquel Rodrigues Costa; Mello,Marco Roberto Bourg de; Ferreira,Joaquim Esquerdo; Silva,Ana Paula Toledo Barbosa da; Mascarenhas,Leandro Mendes; Silva,Bernardo Janella Ferreira da; Cardoso,Beatriz de Oliveira; Palhano,Helcimar Barbosa.
The objective of this study was to evaluate the reproductive parameters of Sindhi cows aiming to improve the efficiency of fixed-time artificial insemination protocols in this breed. For this purpose, sixteen Sindhi cows were divided into two groups: in group I (EB, n = 8) animals received an intravaginal P4 implant and an application of 2 mg of estradiol benzoate on day 0. On day 8 the implant was removed and 10 mg of Dinoprost were applied; on day 9, 1 mg of estradiol benzoate was applied, and animals were fixed-time artificially inseminated 36 hours later; in group II (EB + eCG, n = 8) animals were subjected to same treatment, and on day eight 400 IU of eCG were applied. From day 0 animals were examined daily by a trans-rectal ultrasound device, where...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ECG; Follicular growth; Reproduction; Zebu.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000600005

Arginine improves nutritional quality of sow milk and piglet performance
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Moreira,Rennan Herculano Rufino; Lanferdini,Eloiza; Fonseca,Leonardo da Silva; Chaves,Rhuan Filipe; Garbossa,Cesar Augusto Pospissil; Saraiva,Alysson; Nogueira,Eduardo Terra; Abreu,Márvio Lobão Teixeira de.
ABSTRACT The objective of this study was to evaluate the effect of L-arginine supplementation in lactation diets on the productive and reproductive performance of pluriparous sows and their litters. Seventy-six sows of the same genetic line were assigned to four treatments in a completely randomized design with 19 replicates. The experimental unit was the sow and its respective litter. Treatments comprised a control diet (no L-arginine supplementation) and other three diets obtained by top dressing the control diet with 0.5, 1.0, and 1.5% of L-arginine. L-arginine supplementation had no effect on any performance variables, body condition, milk production, or weaning-estrus interval. There was a quadratic effect on percentage of protein and fat in milk as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Lactation; Milk composition; Reproduction; Swine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100530

Effect of high energy intake on carcass composition and hypothalamic gene expression in Bos indicus heifers
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Diniz-Magalhães,Juliane; Mesquita,Lígia Garcia; Carvalho,Marina Vieira de; Machado,Anna Beatriz Escarpellin; Pimentel,José Rodrigo Valim; Prada e Silva,Luis Felipe.
ABSTRACT The objective of this study was to evaluate the effect of high or low energy intake on carcass composition and expression of hypothalamic genes related to the onset of puberty. Twenty-four prepubertal Nellore heifers, 18-20- months-old, with 275.3±18.0 kg body weight (BW), and 4.9±0.2 (1-9 scale) body condition score (BCS) were randomly assigned to two treatments: high-energy diet (HE) and low-energy diet (LE). Heifers were housed in two collective pens and fed diets formulated to promote average daily gain of 0.4 (LE) or 1.2 kg (HE) BW/day. Eight heifers from each treatment were slaughtered after the first corpus luteum detection - considered as age of puberty. The 9-10-11th rib section was taken and prepared for carcass composition analyses....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Energy supplementation; Neuropeptides; Puberty; Reproduction.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000800664

Brood care in Brachyuran crabs: the effect of oxygen provision on reproductive costs
Provedor de dados: Revista Chilena de Historia Natural
Autores: FERNÁNDEZ,MIRIAM; BRANTE,ANTONIO.
The quantification of the costs associated with parental care of marine invertebrates requires a first and necessary step, which is the identification of the different forms of care exhibited by this group. Among marine invertebrates, provision of oxygen to the aggregation of embryos may be critical, although most evidence on the link between oxygen limitation and parental care is indirect. Species which show active behavior directed at providing oxygen to the brood offer a good model to establish the direct link between behavioural patterns and oxygen provision to the embryos, and to estimate the costs associated with this form of care. In this manuscript, we conducted a review of the current knowledge about oxygen limitation in embryos aggregations of...
Tipo: Journal article
Palavras-chave: Reproduction; Brood care; Crabs; Oxygen; Marine invertebrates.
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000200003

Occurrence and natural history of Myrmelachista Roger (Formicidae: Formicinae) in the Atlantic Forest of southeastern Brazil
Provedor de dados: Revista Chilena de Historia Natural
Autores: AKEMI NAKANO,MÁRCIA; OLIVEIRA DE MIRANDA,VITOR F; RODRIGUES DE SOUZA,DÉBORA; FEITOSA,RODRIGO M; MORINI,M. SANTINA C.
Information on the biology of the species in Myrmelachista remains notably scarce. The objective of this study was to report the occurrence, analyze the influence of canopy cover on the number of nests in twigs in the litter describe behavioral characteristics of this genus. Hand sampling was performed on trees and twigs deposited in the litter. A total of 84 nests and seven species were found. Myrmelachista ruszkii and M. catharinae were the most frequent and abundant species. In trees, most of the nests were located at the tips of dry twigs, and these nests were probably the source of the nests found in the litter of fragments of Atlantic Forest of southeastern Brazil. Canopy cover is associated with the number of nests that were in twigs.
Tipo: Journal article
Palavras-chave: Canopy; Dense ombrophilous forest; Polydomy; Reproduction; Tree species.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200006

Reproductive and fat body cycles of Tropidurus hispidus and Tropidurus semitaeniatus (Squamata, Tropiduridae) in a caatinga area of northeastern Brazil
Provedor de dados: Revista Chilena de Historia Natural
Autores: RIBEIRO,LEONARDO B.; SILVA,NAISANDRA B.; FREIRE,ELIZA M. X.
This study assessed the reproductive and fat body cycles of Tropidurus hispidus (Spix, 1825) and T. semitaeniatus (Spix, 1825) in an area of caatinga in the Serido of Rio Grande do Norte, Brazil, from October 2006 to May 2008. In both species, the females were reproductively active from the middle of the dry season to the beginning of the rainy season. Female reproductive activity was influenced by precipitation, whereas males exhibited spermatozoa in their testes throughout the year, and their reproductive activity was not related to any of the climatic variables analyzed. Mean clutch size (± SD) was 8.1 ± 2.0 and 2.1 ± 0.6 eggs in T. hispidus and T. semitaeniatus, respectively, and was significantly related to female body size only in T. hispidus. The...
Tipo: Journal article
Palavras-chave: Body size-fecundity; Clutch size; Minimum size at maturity; Reproduction; Semiarid.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000300005

Uniformity in the basal metabolic rate of marsupials: its causes and consequences
Provedor de dados: Revista Chilena de Historia Natural
Autores: MACNAB,BRIAN K.
Most of the variation (98.8 %) in basal rate of metabolism (BMR) in 70 species of marsupials is correlated with body mass, although lowland species have higher basal rates than highland species and burrowers have lower basal rates than non-burrowers. These factors collectively account for 99.2 % of the variation in marsupial BMR. Marsupials differ in BMR from eutherians by having no species with a high basal rate by general mammalian standards, even when consuming vertebrates or grass, food habits that are associated with very high basal rates in eutherians. The absence of high basal rates in marsupials reflects the absence of a correlation of rate of reproduction with basal rate, a correlation present in eutherians. These differences have two...
Tipo: Journal article
Palavras-chave: Coexistence; Competitive exclusion; Eutherians; Marsupials; Reproduction.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200002

Probability density function of the number of embryos collected from superovulated Nelore breed donors
Provedor de dados: Scientia Agricola
Autores: Beltrame,Renato Travassos; Barioni,Luis Gustavo; Quirino,Celia Raquel; Dantas,Ozanival Dario.
Several models have been developed to evaluate reproductive status of cows through concentration of progesterone in milk, the effect of sex selection in the commercial production of herds and bioeconomic performance of the multiple ovulation and embryo transfer system in select herds. However, models describing the production of embryos in superovulated females have yet to be developed. A probability density function of the number of embryos collected by donors of the Nelore breed was determined. Records of 61,928 embryo collections from 26,767 donors from 1991 to 2005 were analyzed. Data were provided by the Brazilian Association of Creators of Zebu and Controlmax Consultoria e Sistemas Ltda. The probability density function of the number of viable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zebu; Cattle; Reproduction; Model.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400003

ผลของอุณหภูมิต่อแมลงพาหะ Matsumuratettix hiroglyphicus นำโรคใบขาวอ้อย
Provedor de dados: Thai Agricultural Research Repository
Autores: Chananat Kaewmanee; Yupa Hanboonsong; Tasanee Jamjanya.
Tipo: PhysicalObject
Palavras-chave: Leafhopper; Matsumuratettix hiroglyphicus; Insect vectors; Phytoplasma; Sugarcane white leaf disease; SCWL; Temperature; Reproduction; Multiplication; Disease transmission efficiency; Disease outbreak; Sugarcane; เพลี้ยจักจั่น; แมลงพาหะนำโรค; เชื้อไฟโตพลาสมา; โรคใบขาวอ้อย; อุณหภูมิ; การเจริญพันธุ์ของแมลงพาหะ; การเจริญเติบโตของเชื้อโรค; การถ่ายทอดเชื้อโรค; อ้อย; การระบาดของแมลงพาหะ; การแพร่กระจายเชื้อโรค.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5821

Population biology of spine shrimp Exhippolysmata oplophoroides (Holthuis) (Caridea, Hippolytidae) in a subtropical region, São Paulo, Brazil
Provedor de dados: Zoologia
Autores: Fransozo,Vivian; Costa,Rogério C.; Bertini,Giovana; Cobo,Valter J.
The population biology of Exhippolysmata oplophoroides (Holthuis, 1948) was studied in Ubatuba Bay (23º26'S, 45º02'W), Ubatuba, São Paulo, Brazil, from September/1995 to August/1996. Each sampling comprised eight transects (14 000 m² each), sampled monthly with three repetitions. The specimens were classified with respect to the presence or absence of eggs in the abdominal appendages. Spine-shrimps occurred only on six transects, being most abundant on transect II, with the highest incidence in late spring and throughout the summer months. Ovigerous and non-ovigerous shrimps were present year-round, in an approximately similar proportion (1:1). Site II in Ubatuba Bay is characterized by high salinity and oxygen values, temperature between 26 and 29ºC, low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distribution; Population structure; Reproduction; Southeastern Brazil; Spine shrimp.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000400037

Morcegos da Fazenda Monte Alegre, Telêmaco Borba, Paraná (Mammalia, Chiroptera)
Provedor de dados: Zoologia
Autores: Reis,Nélio R. dos; Peracchi,Adriano L; Sekiama,Margareth L.
A survey of bats species from Monte Alegre Farm is presented. One hundred and two bats of 14 species belonging to Phyllostomidae and Vespertilionidae were colected. Remarks about reproduction and feeding habits are included.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bats; Reproduction; Feeding habits.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200015

Reproductive biology and feeding of Curimatella lepidura (Eigenmann &amp;amp; Eigenmann) (Pisces, Curimatidae) in Juramento reservoir, Minas Gerais, Brazil
Provedor de dados: Zoologia
Autores: Alvarenga,Érika R. de; Bazzoli,Nilo; Santos,Gilmar B.; Rizzo,Elizete.
Reproductive biology and feeding of Curimatella lepidura (Eigenmann &amp;amp; Eigenmann, 1889) were studied in Juramento reservoir, São Francisco River basin, Southeastern Brazil. Histological analyses and gonadosomatic indexes revealed females and males in reproductive activity from October to March and total spawning occurring from January to March coupled with the peak of spermiating males. In the dry season, the fishes accumulated energetic reserves for reproduction during a short rainy season. The species presented sexual dimorphism, being females larger than males and sexual maturation occurring close to 7.7 cm standard length for females and 7.1 cm for males. C. lepidura presented iliophagous feeding habit, ingesting mainly sediment/detritus and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Gonadal maturation; Reproduction; São Francisco River; Spawning.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200002

Dynamics of gonadal development of Aegla platensis Schmitt (Decapoda, Anomura, Aeglidae)
Provedor de dados: Zoologia
Autores: Sokolowicz,Carolina C.; Bond-Buckup,Georgina; Buckup,Ludwig.
One way to estimate gonadal development through the reproductive cycle is to observe the growth of the gonads related to the organs used to store energy. The aim of this study was to follow the gonadosomatic and hepatosomatic indexes during annual cycle of Aegla platensis Schmitt, 1942. Adult animals were collected in Taquara, Rio Grande do Sul, Brazil (29°46'S, 50°53'W). Males and females were initially weighed and dissected and had their gonads and hepatopancreas (HP) removed and weighed in order to estimate the Gonadosomatic (GI) and hepatosomatic (HI) indexes. In females, the indexes were also compared to the degree of development of the ovaries. In males the GI showed a peak of gonadal development in the autumn (p &lt; 0.05), just when the HI showed a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aeglids; Gonadosomatic index; Reproduction.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400023

Algumas características da reprodução e ontogênese de Epilachna paenulata (Germar) (Coleoptera, Coccinellidae, Epilachninae)
Provedor de dados: Zoologia
Autores: Ganho,Norma G.; Marinoni,Renato C.
Epilachna paenulata (Germar, 1824) was reared feeding on pumpkin leaves (Cucurbita pepo Lourt.) in laboratory conditions at temperatures of 20±0,5ºC, relative humidity of 65±0,5% and 12 hour photoperiod. Groups of fecunded and non-fecunded females were studied. The ovarioles showed four developing stages during egg production, morphologically alike for fecunded and non-fecunded females, but differing in the duration time of the stages. Each ovarium has 24 ovarioles on average, less than any other species known into the genus, and all ovarioles are physiologically active at each oviposition. The mean number of ovarioles is lower when compared with the other species of Epilachninae known. Fecunded and non-fecunded females showed a similar preoviposition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epilachninae; Reproduction; Ovariole development; Mate influence; Viability.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200015

Reproductive cycle of the swimming crab Portunus spinimanus Latreille (Crustacea, Decapoda, Brachyura) from Ubatuba, São Paulo, Brazil
Provedor de dados: Zoologia
Autores: Santos,Sandro; Negreiros-Fransozo,Maria Lucia.
This study analyses some reproductive aspects of Portunus spinimanus Latreille, 1819, a crab usually commercialized in Ubatuba region. Monthly otter-trawl collections were taken for two years along the northern coast of São Paulo State, Brazil. The reproductive period was studied based on the frequency of ovigerous females in the population along the year; the frequency of physiologically mature swimming crabs and the type of spawn. The condition of development of ovigerous females ovary was associated with the stage of eggs development. This species presents continuous reproduction in Ubatuba region and total spawn, but with successive broods, which suggests a multiple spawn during the reproduction period.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Portunus spinimanus; Reproduction; Spawn; Brazilian coast.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400025

Biologia reprodutiva de Aegla castro Schmitt (Crustacea, Anomura, Aeglidae) no Buraco do Padre, Ponta Grossa, Paraná, Brasil
Provedor de dados: Zoologia
Autores: Swiech-Ayoub,Bianca de Paula; Masunari,Setuko.
The reproductive biology of Aegla caslro Schmitt, 1942 from Buraco do Padre, Ponta Grossa, Paraná State, was analyzed. The sampling was done monthly, from February/97 to January/98 with aid of hand net and screens at three stations, under an effort of 120 minutes. The mean air temperature ranged from 15.0ºC (May, July, September and October) to 24.3ºC (December and January), and the water temperature from 15.8ºC (July) to 22.3ºC (December). The dissolved oxygen oscillated from 95.7% (March) to 100.2% saturation (August) and the pH from 6.1 (July) to 7.2 (September). A total of 827 specimens were obtained among which 384 males, 311 females and 132 juveniles. Males predominated over females, but the sex ratio followed the standard model of 1:1. Juveniles...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aegla castro; Reproduction; Recruitment; Ponta Grossa; Paraná State.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300033

Natural history notes on frogs from Manaus, Amazonas
Provedor de dados: Zoologia
Autores: Gascon,Claude.
Natural history accounts are presented for six species of anuran amphibians from the Manaus region, Amazonas. Varied information concerning advertisement call, clutch size, hatching success, and reproductive behavior for two species of dendrobatids and four species of hylids. The information was gathered over several years of field work and hopefully will serve to better understand the ecology of these species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibian fauna; Reproduction; Behavior; Amazon; Brazil.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100003

Aspectos reprodutivos de Potimirim glabra (Kingsley) (Crustacea, Decapoda, Atyidae) no Rio Sahy, Mangaratiba, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Lima,Giovana Valverde; Oshiro,Lídia Miyako Yoshii.
The reproductive aspects of the freshwater shrimp Potimirim glabra (Kingsley, 1878) were studied from September 1997 to February 1999. Monthly, samples were collected with sieves, on the river edge, under the edging vegetation or in small pools. At the laboratory, shrimps were sexed and measured in their total lenght, from the tip of the rostrum to the end of telson with precision callipers. The ovigerous shrimps were separated and counted for fecundity determination. The eggs diameter was measured with calibrated stereomicroscope. A total of 3281 shrimps were collected, among which, 47% male, 46% female (13.4% ovigerous females) and 7% young shrimps. The Sex ratio was 1:1. Ovigerous females were present during all seasons, but the reproductive peak...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Decapoda; Atyidae; Freshwater shrimp; Potimirim glabra; Reproduction; Sahy River; Rio de Janeiro State.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300024

Nesting behaviour and larval biology of Prionyx fervens (Linnaeus) (Hymenoptera, Sphecidae) from Brazil
Provedor de dados: Zoologia
Autores: Buys,Sandor C.
The nesting behaviour of Prionyx fervens (Linnaeus, 1758) is described, based on one nesting female observed in a coastal environment from southeastern Brazil. One prey bearing a wasp's egg was created in laboratorial conditions and aspects of the larval behaviour and development are described. Schistocerca cancellata (Serville, 1838) (Caelifera, Acrididae) was found as prey.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immature; Reproduction; Sphecini; Wasp.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200001

Body size, female reproduction and sexual dimorphism in the lizard Ameiva ameiva (Teiidae) in a restinga of southeastern Brazil
Provedor de dados: Zoologia
Autores: Rocha,Carlos Frederico Duarte.
In this study 57 specimens of the lizard Ameiva ameiva (Linnaeus, 1758) collected in the restinga at Barra de Maricá, in the state of Rio de Janeiro, southeastern Brazil, were analyzed to investigate size relations and reproduction (in females) and sexual dimorphism of this population. We answered the following questions: 1) what is the minimum reproductive body size in females? 2) what is the average clutch size and 3) how is clutch size related to body size? 4) Are body and head sizes sexually dimorphic? Mean clutch size was 6.7 ± 2.1 eggs and was positively correlated with female body size. Sexual dimorphism favoring males was found: adult mean snout-vent length was great in males (124.2 ± 17.8 mm) than females (96.5 ± 23.1 mm SVL), and males were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body size-fecundity; Clutch size; Minimum size at maturity; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000200024

Atividade reprodutiva de Scinax rizibilis (Bokermann) (Anura, Hylidae) na Floresta Atlântica, sudeste do Brasil
Provedor de dados: Zoologia
Autores: Bastos,Rogério P; Haddad,Célio F. B.
The breeding activity of Scinax rizibilis (Bokermann, 1964) was observed in a temporary pond, in the municipality of Ribeirão Branco, in the Southern São Paulo State from February 1993 to January 1994 and November 1994 to February 1995. The reproductive season extended from September to February. Females were larger and heavier (after oviposition) than males. In the choras, the spatial distribution tended towards uniformity. The number of males and females in the chorus was positively correlated. However there was no correlation between the number of males and the estimation of the operational sex ratios. On average there were seven males for each female present in the chorus. The males were apparently selected by females.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hylidae; Scinax rizibilis; Reproduction; Sexual selection; Spatial distribution; Seasonality.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200007

Levantamento preliminar dos morcegos do Parque Nacional de Ubajara (Mammalia, Chiroptera), Ceará, Brasil
Provedor de dados: Zoologia
Autores: Silva,Shirley Seixas Pereira da; Guedes,Patrícia Gonçalves; Peracchi,Adriano Lúcio.
A preliminary survey of bats species from the Ubajara National Park is presented. One hundred sixty two bats from 14 species were collected. Comments about reproduction of the captured species are included.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Bats; Reproduction; Ceará; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100015

Chromatic alteration in Arenaeus cribrarius (Lamarck) (Crustacea, Portunidae): an indicator of sexual maturity
Provedor de dados: Zoologia
Autores: Pinheiro,Marcelo Antonio Amaro; Taddei,Fabiano Gazzi.
Some individuals of the species Arenaeus cribrarius (Lamarck, 1818) bear a characteristic pink abdomen, which is notably different from the usual white coloration. The incidence of this chromatic alteration was determined for a single population and its relation with other individual variables were examined. The individuals were monthly collected from May, 1991 to April, 1993, in Ubatuba, São Paulo, with the aid of a shrimp fishery boat provided with double-rig trawling nets. All specimens were sexed, measured (CW = carapace width), distributed in 10-mm size classes and classified according to growth phase (juvenile and adult), molting condition and development stage of gonads. The occurrence of pink-colored morphs was also recorded. From a total of 2,096...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Portunidae; Reproduction; Coloration.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000400006

Aspectos do desenvolvimento ovocitário no peixe-pulmonado Sul-americano, Lepidosiren paradoxa Fitzinger (Dipnoi)
Provedor de dados: Zoologia
Autores: Chaves,Paulo de Tarso da Cunha.
Histological changes in the oocyte development of South American lungfish are described. During maturation, pre-vitellogenic and vitellogenic phases could be distinguished, and they are similar to those of teleost fishes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Amazonian; Lepidosiren paradoxa; Dipnoi; Osteichthyes.
Ano: 1992
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000100011

Fertilidade do caranguejo de mangue Ucides cordatus (Linnaeus) (Crustacea, Brachyura, Ocypodidae), em Iguape (São Paulo, Brasil)
Provedor de dados: Zoologia
Autores: Hattori,Gustavo Yomar; Pinheiro,Marcelo Antonio Amaro.
A total of 58 Ucides cordatus (Linnaeus, 1763) ovigerous females in final embryonic stage were collected in mangrove forest at Iguape (São Paulo). Each female were kept in laboratory until the larvae hatching and had their carapace width (CW) measured with caliper (0.05 mm) and the larval number (LN) calculated by volumetric method. The hatching rates (HR) were calculated for each animal's size class (5 mm). The values of LN and CW obtained were subjected to regression analyses and the best fitting model was chosen by comparing the obtained determination coefficients (R²). The fertility varied from 71,200 to 220,800 larvae (147,169 ± 32,070 larvae), corresponding to 41.7 to 76.8 mm CW (63.7±7.9 mm), respectively. The relationship LNxCW was expressed by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Crustacea; Fertility; Ocypodidae; Reproduction; Ucides.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200022

Biologia reprodutiva dos bagres marinhos Genidens genidens (Valenciennes) e Cathorops spixii (Agassiz) (Siluriformes, Ariidae), na Baía de Sepetiba, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Gomes,Iracema David; Araújo,Francisco Gerson; Azevêdo,Marcia Cristina Costa de; Pessanha,André Luiz Machado.
The reproductive cycle of the marine catfishes Genidens genidens Valenciennes, 1833 and Cathorops spixii Agassiz, 1839 in the Sepetiba Bay, was assessed by an annual period of sampling from October 1993 to September 1994. The fishes were caught by standardized otter trawl and environmental parameters of temperature, salinity and transparency of water were recorded at each sampling. Five gonadal phases were described, based in macroscopic observations. Changes in the gonadosomatic index (GSI) and in the percentual of stages of gonadal development showed that G. genidens spawns in Summer/early Autumn, coinciding with low salinity and high temperature and transparency. Cathorops spixii spawns in late Spring/early Summer, coinciding with rising temperature and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Siluriformes; Ariidae; Reproduction; Marine Catfish; Sepetiba Bay.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000600017

Ablação ocular no camarão Macrobrachium rosenbergii (De Man) (Crustacea, Decapoda, Palaemonidae): efeitos sobre a reprodução, pigmentação epidérmica e atividade alimentar
Provedor de dados: Zoologia
Autores: Santos,Marcel José Martins dos; Pinheiro,Marcelo Antônio Amaro.
This study analyze the consequences of unilateral and bilateral ablation based on ovigerous percentage, consecutive spawns, and secondary effects of the surgical process in the females of Macrobrachium rosenbergii (De Man, 1879). Two experiments were carried out with four and seven months old females in intermolt stage. Each experiment was comprised of control, unilateral and bilateral ablation. Eyestalk ablation was done with a bistoury with a topic hot cauterization followed by application of antibiotic pomades. The animals were maintained at constant temperature (28 ± 1,05ºC) and photoperiod of 12L: 12D within fibercement boxes with sandy bottom and biological filter. Females were observed once a day during fourteen weeks, registering gonadal condition,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Eyestalk ablation; Reproduction; Pigmentation; Feeding activity; Prawn.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000300012

Reproductive biology of Moenkhausia intermedia (Eigenmann) (Pisces, Characiformes) in Itumbiara Reservoir, Goiás, Brazil
Provedor de dados: Zoologia
Autores: Hojo,Renê Eiji Souza; Santos,Gilmar Bastos; Bazzoli,Nilo.
To study the reproductive biology of Moenkhausia intermedia (Eigenmann, 1908) in Itumbiara reservoir, Paranaíba river, Goiás, Brazil, a total of 301 specimens (237 females and 64 males) were captured quaterly from January to December 1993. The gonadosomatic index of females and males were related to morphologic variations of the gonads in different reproductive cycle stages (RCS). Analysis of RCS frequency and variations in the gonadosomatic index showed that M. intermedia reproduces during the whole year with fractional spawning. The smallest standard length at advanced maturity stage was estimated as 6.6 cm for females and 6.0 cm for males. The stomach repletion and coelomic fat indexes of both sexes reached peak values in the rest stage, suggesting that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gonads; Reproduction; Sexual dimorphism; Sexual maturation; Spawning.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300015

Estudo do crescimento e da reprodução de Bradybaena similaris (Férussac) (Mollusca, Xanthonychidae) em laboratório
Provedor de dados: Zoologia
Autores: Almeida,Marcelo Nocelle de; Bessa,Elisabeth Cristina de Almeida.
Biological aspects of Bradybaena similaris (Férussac, 1821) were studied, such as: onset of sexual maturity, occurrence of self-fertilization, oviposition, incubation period, eclosion rate and shell length measurement at different stages of development. It was noted that in isolated B. similaris the minimum and maximum time for reaching sexual maturity were 109 and 180 days, respectively. When kept in groups, the minimum time was 78 days. The occurrence of self-fertilization was observed in 18.4% of specimens. The total number of eggs per oviposition varied from one to 38 (average: 3,5 ± 7,15), the total number of eggs per mollusc varied from one to 39 (average: 7,0 ± 10,21) and the total number of oviposition per mollusc varied form one to six (averege:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bradybaena similaris; Biology; Growth; Reproduction.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400010

Aspectos da reprodução e dinâmica populacional de Chione pubera (Bory Saint-Vicent) (Bivalvia, Veneridae) no sul do Brasil
Provedor de dados: Zoologia
Autores: Borzone,Carlos Alberto; Vargas,Kelly Midori; Pezzuto,Paulo Ricardo; Tavares,Yara Aparecida Garcia.
Material collected with a 2-meter wide beam trawl during eight surveys conducted from December 1995 to February 1997 was used for a first preliminary description of the reproduction and population dynamics of the edible venerid bivalve Chione pubera (Bory Saint-Vicent, 1827). Greatest catches were found between 30 to 35 meters depth, on fine sandy bottoms with a mud content lower than 10%. Dry weight meat condition index showed highest values during autumn and lowest values from winter to summer months. Histological analysis of gonadal tissue showed a continuous reproduction, with peaks of maturation on autumn and spring, Spawning was related with the increase of water temperature, that occurs twice a year in the region as a consequence of a particular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chione pubera; Reproduction; Venerid; South Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200003

Reproductive aspects of Cyphocharax voga (Hensel) from Custódias Lagoon, Rio Grande do Sul, Brazil (Characiformes, Curimatidae)
Provedor de dados: Zoologia
Autores: Schifino,Lúcia Cabral; Fialho,Clarice Bernhardt; Verani,José Roberto.
The aim of this study was to analyse the reproductive period, fecundity and the size of the first gonadal maturation of Cyphocharax voga (Hensel, 1869) of Custódias Lagoon, state of Rio Grande do Sul, Brazil. The specimens (293 males and 247 females) were collected monthly, during the period between October 1994 and September 1995. The reproductive period took place from early winter until the end of spring. The average absolute fecundity was 36608 oocytes. The size of the first gonadal maturation was estimated in 121 and 128 mm for males and females respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Curimatidae; Cyphocharax voga; Fecundity; Reproduction.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300019

Composição de colônia e reprodução de Molossus rufus (E. Geoffroy) (Chiroptera, Molossidae) em um refúgio no sudeste do Brasil
Provedor de dados: Zoologia
Autores: Esbérard,Carlos.
In this study carried out in the Biological Reserve of Poço das Antas, Rio de Janeiro state, southeastern Brazil, a roost of Molossus rufus (E. Geoffroy, 1805) was sampled one night per month, from November 2000 to October, 2001. The colonies in this species can exceed more than five hundreds, being present both sexes. The total number of animals captured was higher in the spring and declined in the autumn and winter. Between April to July the proportion of males overcome the females, while in other months the females prevailed. Molossus rufus have seasonal reproduction. Females arrived by July and the number increases until November. Few animals remained in this roost during colder months. Such fact suggests that females and great part of the males leave...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molossidae; Molossus rufus; Colony composition; Roost; Reproduction.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400021

Aspectos reprodutivos do caranguejo Aratus pisonii (H. Milne Edwards) (Crustácea, Decapoda, Grapsidae) do manguezal de Itacuruçá, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Nicolau,Cristiane Ferreira; Oshiro,Lídia Miyako Yoshii.
The objective of this work has to get knowledge about the reproductive aspect of the tree crab Aratus pisonii (H. Milne Edwards, 1837). The sampling were made monthly from April, 2000 to April, 2001, in the Itacurucá's mangrove (22º54'S and 43º33'W), Rio de Janeiro. The crabs were collected handly, using an effort of 50 minutes with three collectors. In laboratory, the specimens were separated by sex and had measured the carapace width and lenght. The ovigerous females were separated and the mass of eggs was removed for a mensurament of size and count of eggs. Afterwards, the animals were conservad in 70% alcohol. A total of 783 individuals were caught among 59% males and 41% females among these 8% were ovigerous. The ovigerous females were found almost...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aratus pisonii; Reproduction; Tree crab; Itacurucá's mangrove; Sepetiba Bay.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600016

Aspectos reprodutivos de Palaemon pandaliformis (Stimpson) (Crustacea, Decapoda, Palaemonidae) no Rio Sahy, Mangaratiba, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Lima,Giovana Valverde; Oshiro,Lídia Miyako Yoshii.
The reproductive aspects of the freshwater shrimp Palaemon pandaliformis (Stimpson, 1871) were studied from March, 1998 to February, 1999. Monthly, samples were collected with sives, on the river edge, under the edging vegetation or in small pools. At the laboratory, shrimps were sexed and measured in their total lenght, from the tip of the rostrum to the of telson with precision callipters. The ovigerous shrimps were separated and counted for fecundity determination. The eggs diameter was measured with calibrated stereomicroscope. A total of 872 were collected among which, 46% female, 29% male and 25% juvenil. The sex ratio was 1:1.57. Ovigerous females were present during all seasons, but the reproductive peak accurred in Spring. The ovigerous female...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Palaemon pandaliformis; Freshwater shrimp; Sahy River; Rio de Janeiro State.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300023

Aspectos reprodutivos do caranguejo guaia, Menippe nodifrons Stimpson (Crustacea, Decapoda, Xanthidae) da Baía de Sepetiba, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Oshiro,Lidia Miyako Yoshii.
The objective of this work was to get some knowledge about the Guaia stone crab reproduction. The sampling was monthly obtained in the intertidal zone at the Ibicuí Rock Beach. The 638 crabs were collected from August, 1995 to March, 1997. In this total amount 293 were males and 345 (41 ovigerous crabs) were female crabs. Biometrical data informing the total width and length were taken, and gonadal stage was checked macroscopically. The total male width range was between 7.9 to 67.1 mm, while in the female crabs it was between 4.4 to 79.3 mm. The female ones were bigger than the male ones. The ovigerous female crabs were found mainly on Spring and Summer and it probably indicates the reproduction season. The carapace width range of the ovigerous female...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapoda; Xanthidae; Menippe nodifrons; Reproduction; Stone crab; Sepetiba Bay.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300019

Reproductive biology of Leporinus taeniatus Lütken (Pisces, Anostomidae) in Juramento Reservoir, São Francisco River basin, Minas Gerais, Brazil
Provedor de dados: Zoologia
Autores: Thomé,Ralph G.; Bazzoli,Nilo; Rizzo,Elizete; Santos,Gilmar B.; Ratton,Thiago F.
The reproductive biology of the piau-jejo Leporinus taeniatus Lütken, 1875, an endemic species from the São Francisco River basin, was studied by using macroscopical and histological techniques. A total of 121 males and 94 females were captured quarterly, between March 2002 and February 2003 in the Juramento Reservoir. Females were larger than males, indicating sexual dimorphism. Stages of gonadal maturation were defined from histological analyses and gonadosomatic index. Peaks of maturing/mature and spawned/spermiated fishes has occurred in period December-February. L. taeniatus presented total spawning and group-synchronic development of the oocytes. The gonadosomatic index accompanied gonad maturation in both sexes, and coelomic fat presented lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characiformes; Gonadal maturation; Piau-jejo; Reproduction; Total spawning.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300006

Biologia reprodutiva e ecologia de Aegla leptoaectyla Buckup &amp;amp; Rossi (Crustacea, Anomura, Aeglidae)
Provedor de dados: Zoologia
Autores: Noro,Clarissa Köhler; Buckup,Ludwig.
The crustaeeans of Aeglidae family oeeur in South America's fresh water enviranments, featuring as important links in the food chains. The present article has the intention to give an acount of the results from investigations made from April/2000 to July/2001 on the biological and ecological features of Aegla leptodactyla Buckup &amp;amp; Rossi, 1977, an endemic species from the headwaters of the Rio Pelotas Basin in Rio Grande do Sul State, Brazil. The sampling was performed at the Rio da Divisa, tributary of Rio Pelotas, municipal district of São José dos Ausentes, Rio Grande do Sul. The animais were collected with a hand net (puçá) at four different sites of the river. High contents of dissolved oxygen was verified, with a medium value of 108% and alow...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aegla leptodactyla; Habitat; Reproduction; Recruitment.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400011

Embryonic development and duration of incubation period of tropical intertidal hermit crabs (Decapoda, Anomura)
Provedor de dados: Zoologia
Autores: Turra,Alexander; Leite,Fosca Pedini Pereira.
The description of the embryonic development of the hermit crabs Clibanarius antillensis Stimpson, 1859, C. sclopetarius (Herbst, 1796), C. vittatus (Bosc, 1802), and Pagurus criniticornis (Dana, 1852) and preliminary observations on the development of Pagurus brevidactylus (Stimpson, 1858) and Paguristes tortugae Schmitt, 1933 were done. The analysis of the external morphology of the embryos of the studied species allowed the identification of seven stages: Stage 1, Zygote and cleavage; Stage 2, Homogeneous mass (advanced cleavage and gastrulation); Stage 3, Initiation of the germinal disc (yolk-free area); Stage 4, Percentage of yolk-free area from 5% to 50-70%; Stage 5, Eye pigmentation (comma-shape) and heart beating; Stage 6, Percentage of yolk-free...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clibanarius; Life history strategies; Pagurus; Reproduction.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000300020

Reproductive biology of Steindachnerina insculpta (Fernandez-Yépez) (Teleostei, Curimatidae) in Furnas reservoir, Minas Gerais, Brazil
Provedor de dados: Zoologia
Autores: Ribeiro,Vinicius M. A.; Santos,Gilmar B.; Bazzoli,Nilo.
The 'saguiru' Steindachnerina insculpta, a small teleost detritivorous fish species in Furnas reservoir, upper rio Paraná basin, Minas Gerais, Brazil, has a prolonged period of reproductive activity that extends from September to March, with fractionated spawning. During gonadal maturation, the females showed a low hepatosomatic index, suggesting that hepatic substances are possibly transferred from liver to ovaries. During the reproductive period, this fish had lower stomach repletion and coelomic fat indexes, indicating that the species eat less and consume more fat reserves. The weight of the ovaries influenced positively the condition factor (K1), since the lowest K2 values (without the gonads weight), were obtained during maturation, confirming the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater teleost fish; Reproduction; Spawning.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100009

Estrutura populacional, aspectos da reprodução e alimentação dos Cyprinodontiformes (Osteichthyes) de um riacho do sudeste do Brasil
Provedor de dados: Zoologia
Autores: Aranha,José Marcelo Rocha; Caramaschi,Érica Pellegrini.
The population structure, reproductive aspects and feeding of Phalloceros caudimaculatus (Hensel, 1868), Poecilia vivipara Bloch &amp;amp; Schneider (1801), Phalloptychus januarius (Hensel, 1868) e Jenynsia lineata (Jenyns, 1842) were studied in five sampling stations in the Ubatiba stream, municipality of Maricá (State of Rio de Janeiro, Brazil). In relation to the population structure, P. caudimaculatus was more representative upstream; P. vivipara mid-stream and downstream; P. januarius and J. lineata downstream. The species presented preponderance of females, except in the intermediate length classes. The occurence of imatures and females with young pointed out a long reproductive period and favoured areas for reproduction of the four species. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyprinodontiformes; Population structure; Feeding; Reproduction; Coastal stream.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300005

Breeding success of Cacicus haemorrhous (Linnaeus) (Aves: Icteridae) in different environments in an Atlantic Forest reserve in Southeast Brazil
Provedor de dados: Zoologia
Autores: Duca,Charles; Marini,Miguel Ângelo.
Several factors, including the site where the colony was established and number of active nests can influence directly or indirectly the breeding success of colonial birds. The red-rumped cacique, Cacicus haemorrhous (Linnaeus, 1766), is a passerine (Icteridae) that breeds in colonies in different environments. The objective of this study was to evaluate the breeding success of red-rumped cacique in relation to three environments (lake edge, forest and swamp) in which colonies were established in an Atlantic Forest reserve in southeast Brazil. Seven colonies from the three environments were monitored during the breeding season of 2001. Overall probability of nest survival was 40.5%. We found that colonies established in the swamp presented higher nest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nest predation; Red-rumped cacique; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000200002

External factors determining breeding season in the red mangrove crab Goniopsis cruentata (Latreille) (Crustacea, Brachyura, Grapsidae) on the São Paulo State northern coast, Brazil
Provedor de dados: Zoologia
Autores: Cobo,Valter José; Fransozo,Adilson.
This study evaluated the influence of the water and air temperatures, pluviosity and photoperiod on the breeding season of Goniopsis cruentata (Latreille, 1803), in Ubatuba littoral, southeastern Brazilian coast. Monthly collections were conducted out from January/95 to December/96 in an estuarine area from 23º29'10"-23º29'45"S to 45º09'10"-45º10'00"W. Water and air temperature variation showed the highest correlation coefficient with the frequency of ovigerous females, r² = 0.73 and 0.68, respectively. However, an analysis of the set of environmental variables, revealed the photoperiod as the factor of highest association with the ovigerous frequency (r² = 0.68). This degree of association allow us to suggest that the breeding season duration of G....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding season; Goniopsis cruentata; Grapsidae; Reproduction; Ubatuba.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200007

Reproductive traits of the yellow-mandi catfish Pimelodus maculatus Lacépède (Osteichthyes, Siluriformes) in captive breeding
Provedor de dados: Zoologia
Autores: Sato,Yoshimi; Fenerich-Verani,Nelsy; Verani,José Roberto; Godinho,Hugo Pereira; Sampaio,Edson Vieira.
Pimelodus maculatus Lacepede, 1803 is an important fish of the Säo Francisco river basin, where it is economically significant in both professional and sports fisheries. The fish, maintained in captivity, was subjected to hypophysation with crude caip pituitary extract. Approximately 70% of the females treated spawned viable eggs. The eggs were opaque, demersal, yellow and free. Egg stripping was performed at 213 hour-degrees (duration = 8.3 h) after the second dose injection, at water temperature of 25-26ºC. Hatching occurred at 394 hour-degrees (duration = 16.3 h) after egg fertilization, at water temperature of 24-25ºC. Egg fertilization rate was 64.8%. The relationship between absolute fecundity (AF), initial fertility (IF) and final fertility (FF) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Siluriformes; Pimelodus maculatus; Yellow-mandi catfish; Reproduction.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400006

Aspectos reprodutivos de Poecilia vivipara (Bloch &amp;amp; Schneider) (Poeciliidae) da Lagoa Rodrigo de Freitas, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Mendonça,José P.; Andreata,José V.
Poecilia vivipara (Bloch &amp;amp; Schneider. 1801) is a species that lives in the Rodrigo de Freitas lagoon, a coastal lagoon in the city of Rio de Janeiro. The objective of this study was to increase the knowledge about reproductive aspects of P. vivipara population including: the female size when it begins reproduction, the number of offsprings per gestation, embrionary development stages and the number of pregnant females. The results show that P. vivipara reproduces throughout the whole year with its first maturation occurring at 29 mm. The proportion found of females to males was 3:1. Embryos showed four developmental stages until birth with sexual differentiation occurring after 15mm.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poeciliidae; Poecilia vivipara; Reproduction; Viviparity.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400001

Estudo do crescimento e da reprodução de Leptinaria unilamellata (D'orbigny) (Mollusca, Subulinidae) em laboratório
Provedor de dados: Zoologia
Autores: Almeida,Marcelo Nocelle de; Bessa,Elisabeth Cristina de Almeida.
Biological aspects of Leptinaria unlamellata (d'Orbigny, 1835) were studied, such as: onset of sexual maturity, occurrence of self-fertilization and shell length measurement at different stages of development. In isolated specimens of L. unilamellata, sexual maturity was reached at 74 days (minimum time) and 104 days (maximum time). For the grouped specimens, the minimum time was 71 days. The occurrence of self-fertilization was observed in both species, 100% of specimens. The total numberof young per birth varied from one to 22 (average: 7,35 ± 5,78), the total number of offsprings per mollusc varied from two to eight (average: 4,1 ± 1,41) and total number of young per mollusc varied from five to 46 (average: 30,21 ± 8,08). As to the shell length in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptinaria unilamellata; Biology; Growth; Reproduction.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400009

Aspectos da reprodução de Palaemon pandaliformis (Stimpson) (Decapoda, Palaemonidae) no manguezal de Ratones, Florianópolis, Santa Catarina
Provedor de dados: Zoologia
Autores: Müller,Yara Maria Rauh; Nazari,Evelise Maria; Bressan,Cristine Maria; Ammar,Dib.
Biometric and reproductive aspects of Palaemon pandaliformis (Stimpson, 1871) from Ratones Mangrove, Florianópolis, Santa Catarina, have been investigated. Individuals were monthly collected from August, 91 to July, 93 and the temperature and salinity registered. Biometry, sex-ratio, sexual maturity, fecundity and reproductive cycle have been determined. The temperature showed defined temporal distribution. This species presents animal reproductive cycle, relatively high individual and populational fecundity, and the ovigerous females were larger than males and other females of the same species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Palaemon pandaliformis; Ratones mangrove; Fecundity.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300013

Biologia reprodutiva de Oligosarcus jenynsii (Günther) (Characiformes, Characidae) da Lagoa das Custódias, Tramandaí, Rio Grande do Sul, Brasil
Provedor de dados: Zoologia
Autores: Fialho,Clarice B.; Schifino,Lucia C.; Verani,José Roberto.
The Custódias lagoon has a great importance in the Tramandaí system, because it works as reproduction area, feeding and nursery grounds to several fish species. The aim of this work is the study of aspects related to the reproduction of Oligosarcus jenynsii (Günther, 1864) as such as reproductive period, sexual ratio, fecundity and size of the first gonadal maturation. The specimens were sampled monthly from October/1994 to October/1995. For each sex, maturation curves were established, based on the monthly variation of the gonadossomatic index mean values, as well as, the relative frequencies of the sexual maturity stages. Breeding seasons took place during the winter and spring. The sex ratio was significanthly different from 1:1, with more females than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characi formes; Oligosarcus jenynsii; Fecundity; Reproduction.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300020

Aspectos da reprodução do peixe-porco, Balistes capriscus (Gmelin) (Actinopterygii, Tetraodontiformes, Balistidae) coletado na costa sul do Estado de São Paulo, Brasil
Provedor de dados: Zoologia
Autores: Bernardes,Roberto Ávila; Dias,June Ferraz.
The monthly analysis of maturity stage frequency suggested that spawning of the grey triggerfish Balistes capriscus (Gmelin, 1788) is annual, total and occurs from November to February in the south of São Paulo State, Brazil. Size at first maturity is 169 mm for females and 200 mm for males. Condition factor estimated considering and disconsidering gonad weight (K and K') showed maximum values related to periods of higher frequency of females at advanced maturity stage. ΔK was higher in December, January and February, and was related to the maximum frequency of mature females. As K estimates the gonad condition it could be used as a maturity and breeding season index for this species. The gonadosomatic relation behaved the same as K values.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Balistes capriscus; Grey triggerfish; Reproduction; Oocyte development; Size at first maturity.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000300014

Características histológicas del ciclo reproductivo de Euvola ziczac (Linnaeu) (Pectinidae, Bivalvia) del litoral sur-sudeste del Brasil
Provedor de dados: Zoologia
Autores: Borzone,Carlos Alberto; Pezzuto,Paulo Ricardo; Tavares,Yara Aparecida Garcia.
Scallops were collected from beds at 30 to 40 m depth on the south-southern inner continental shelf of Brazil for histological gonadal characterization of the reproductive cycle. This hermaphroditic scallop was an important shellfish resource during 70-80 decade, with maximal annual landings of 8,845 tons, but now is depleted. Results shows that reproduction is continuous, with two major spawning periods, the first during end of summer and throughout autumn, and the second during winter and beginning of spring. A characteristic phenomenon of oocyte atresia, with maximal incidences in September is described. This phenomenon, followed by the mature oocyte resorption and new oocyte proliferation and maturation, was related to the lack of spawning stimulation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oocyte atresia; Reproduction; Scallops; Spawning stimulation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000400033

Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato &amp;amp; Pavanelli (Eoacanthocephala, Neoechinorhynchidae) of Pimelodus maculatus Lacépède (Siluroidei, Pimelodidae) of the São Francisco River, Brazil
Provedor de dados: Zoologia
Autores: Brasil-Sato,Marília de C.; Pavanelli,Gilberto C.
Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato &amp;amp; Pavanelli, 1998, in Pimelodus maculatus Lacépède, 1803 collected in the São Francisco river during periods of drought (July 1995 and 1996) and floodings (January 1996 and 1997) of this river basin are provided. In tropical regions where the amount of rainfall alters the hydrological regimen of limnological systems water temperature has not had an important role in infections of N. pimelodi in P. maculatus. Prevalence was somewhat higher during drought periods. Intensity of infection varied slightly between collecting periods. Mature male and female acanthocephalans were present in all periods. Females were predominant. Mature females were present in higher numbers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acanthocephala; Neoechinorhynchus pimelodi; Pimelodus maculatus; Ecology; Reproduction.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100002

Nest deprivation and mating success in Nile tilapia (Teleostei: Cichlidae)
Provedor de dados: Zoologia
Autores: Mendonça,Francine Z.; Gonçalves-de-Freitas,Eliane.
We tested the effect of nest deprivation on the mating success and sexual selection of dominant Nile tilapia males in two treatments, consisting of two males and three females kept on aquarium with or without nesting substrate (INS: with substrate inside, N = 9; NOS: non-substrate inside, N = 11). Other male traits potentially affecting mating success, such as aggressiveness level, courtship investment, and condition factor were also analyzed. The dominant male's behavior was video-recorded in four 20-min sessions: 1, 4, 7, and 10 days after grouping. Latency to spawn and spawning frequency were similar in WS and NS groups, showing the same mating success among dominant males on the presence or absence of gravel. Nest investment was the main factor related...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggressiveness; Courtship; Reproduction; Sexual selection; Substrate.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000300005

Aspectos reprodutivos de Goniopsis cruentata (Latreille) (Crustacea, Brachyura, Grapsidae) na Baía de Sepetiba, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Silva,Zilanda de Souza; Oshiro,Lídia Miyako Yoshii.
The objective of this study was to get some knowledge about the reproductive aspects of Goniopsis cruentata (Latreille, 1803), concerning through sex ratio, morphological sexual maturity, reproductive period, fecundity and eggs size. The crabs were collected monthly in Itacuruçá's Mangroves from November, 1997 to November, 1998. Four hundred and seven crabs were caught and they were 47% males, 36% females and 17% ovigerous females. The sex ratio was 1:1.13 (male:female) (X²= 1.54, p &gt; 0.05). The relation of abdomen width (AW) and carapace width (CW) in females showed a positive allometric grow (b = 1.36), it suggests the size onset of maturity occur from 26.0 a 29.0 mm (CW) in females. The ovigerous females occured during all the research period, except...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grapsidae; Goniopsis cruentata; Reproduction; Fecundity; Sexual maturity; Sepetiba Bay.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300027

Nesting behaviour and larval biology of Sphex opacus Dahlbom (Hymenoptera, Sphecidae) from Brazil
Provedor de dados: Zoologia
Autores: Buys,Sandor C.
Aspects of the nesting behaviour of Sphex opacus Dahlbom, 1845 are presented for the first time, based on observations carried out in a coastal habitat from southeastern Brazil. Larval behaviour and development were studied in laboratorial conditions.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biology; Reproduction; Larva; Wasp.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300030

Development and reproduction in Bulimulus tenuissimus (Mollusca: Bulimulidae) in laboratory
Provedor de dados: Zoologia
Autores: Silva,Lidiane C.; Meireles,Liliane M. O.; Junqueira,Flávia O.; Bessa,Elisabeth C. A.
Bulimulus tenuissimus (d'Orbigny, 1835) is a land snail of parasitological importance with a poorly understood biology. The goal of this laboratory study was to determine development and reproductive patterns in B. tenuissimus. Recently hatched individuals in seven groups of 10 were maintained in the laboratory for two years. To test for self-fertilization, 73 additional individuals were isolated. After 180 days the isolated snails showed no signs of reproduction. Subsequently, 30 of these snails were paired to test fertility. We noted the date and time of egg-laying, the number of eggs produced, the number of egg-layings per individual, the incubation period and hatch success. This species shows indeterminate growth. Individuals that were maintained with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Land snail; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000200009

Morcegos do Parque Estadual da Serra da Tiririca, Rio de Janeiro, Brasil (Mammalia, Chiroptera)
Provedor de dados: Zoologia
Autores: Teixeira,Sylvia Ceppas; Peracchi,Adriano L.
A preliminary survey of bats species from the Serra da Tiririca State Park is presented. Two hundred and seventy two bats of 20 species were collected. Comments about reproduction and feeding habits of the captured species are included.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Bats; Reproduction; Feeding habits.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000100005

Indicadores reprodutivos de Parauchenipterus striatulus (Steindachner) (Pisces, Auchenipteridae) na Represa de Ribeirão das Lajes, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Araújo,Francisco Gerson; Duarte,Silvana; Goldberg,Rubens Sterental; Fichberg,Liana.
Parauchenipterus striatulus is a representative of the freshwater catfish with wide distribution in the South America region. Despite of being a very abundant fish in rivers and reservoirs of this region, little is known about its biology and ecology. In Ribeirão das Lajes reservoir (22º42'S - 22º50'S, 43º53'- 44º05' W, Rio de Janeiro), the Rio de Janeiro state's largest hydroelectric reservoir, this species is very abundant, representing about 40% of the total experimental fish catches using gill nets. This paper aims to assess aspects of the reproductive cycle of this species describing the gonadal stages, gonadosomatic index, weight-length relationship and condition factor. Fish sampling were carried out bi-monthly, between April 1996 and May 1997. Gill...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auchenipteridae; Length-weight relationship; Reproduction; Condition factor; Gonadosomatic index; Reservoir.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400016

Biologia reprodutiva de Astyanax scabripinnis paranae (Eigenmann) (Ostheichthyes, Characidae), do ribeirão das Marrecas, bacia do rio Tibagi, Paraná
Provedor de dados: Zoologia
Autores: Veregue,Angela Maria Louzada; Orsi,Mário Luís.
Some aspects of the reproductive cycle of female "lambari", Astyanax scabripinnis paranae (Eigenmann, 1927) were studied. The specimens were collected in intervals of fifteen days, from September 1979, until November 1980, in the Marrecas creek (Irerê and Paiquerê districts), Londrina, Paraná, Brazil. The maturity scale was characterized in five stages: immature, maturation, spawning, spent, and resting, which was established by the gonad-somatic relation and the ovary morphology and microscopic aspects. The maturation curve and distribution of maturity stages show that the period of reproduction is very long; spawning extended from July to March. The gonad cycle is related to seasons: maturation occurs chiefly in the winter months, spawning specimens are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astyanax scabripinnis; Characidae; Biology; Reproduction; Tibagi river.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000100012

A incubação de ovos e larvas em Genidens genidens (Valenciennes) (Siluriformes, Ariidae) da Baía de Guaratuba, Paraná, Brasil
Provedor de dados: Zoologia
Autores: Chaves,Paulo de Tarso da C.
At Guaraluba bay, the catfish Genidens genidens shows incubating behavior during the summer months. The larvae are either less or heavier than the eggs, and their stomach analysis confirms the exogenous leeding during incubation. Embryos sizes can increase to 59mm in total lenght and 2,8g in total weight, including the yolksac. It was observed that the largest larvae are guarded by the largest adults, and that the embryo size is similar among individuals from the same adult.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catfish; Reproduction; Fishes; Larvae; Paraná.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400008

Aspectos da reprodução do caranguejo guaiamum, Cardisoma guanhumi Latreille (Crustácea, Decapoda, Gecarcinidae) da Baía de Sepetiba, Rio de Janeiro, Brasil
Provedor de dados: Zoologia
Autores: Silva,Rejane da; Oshiro,Lídia Miyako Yoshii.
The objective of this work is to get knowledge about the "guaiamum" crabs reproduction. Two hundred and twenty four crabs were caught from August'96 to July'97. Their sex carapace color and morphometric data were obtained. The stages of gonadal development were macroscopically determined and the eggs diameter was measured. Three colors patters for the carapace for males, and four patters for females. Five stages of gonadal development were observed in female crabs, and two stages were observed for males. The first sexual maturity was estimated 53,0 mm carapace width for the females and 52,0 mm for the males. The ovigerous females occurred from March to May. The individual fecundity varied from 103.300 to 366.400 eggs. The eggs mean diameter was 0,39 mm.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decapoda; Gecarcinida; Cardisoma guanhumi; Reproduction; Land crabs; Mangrove.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600007

Dinâmica da reprodução do cascudo, Rineloricaria latirostris Boulenger (Siluriformes, Loricariidae) do rio Passa Cinco, Ipeúna, São Paulo
Provedor de dados: Zoologia
Autores: Barbieri,Geraldo.
Aspects of reproduction of Rineloricaria latirostris Boulenger, 1899 of Passa Cinco river (Ipeúna, São Paulo) were investigated during 18 months. The spawing period was determined by the analysis of the maturation curve, based of the monthly variation of the gonadosomatic index and condition factor. The size and age on the maturation and fecundity were also determined. The fecundity was realted to some parameters such as total length and total weight.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Dynamics; Maturation; Fecundity.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400003

Crescimento e reprodução de Hyale media Dana (Amphipoda, Gammaridae, Hyalidae) associada à Sargassum cymosum C. Agardh
Provedor de dados: Zoologia
Autores: Leite,Fosca Pedini Pereira.
The post-marsupial growth, sexual differentiation, fecundity and reproductive biology of Hyale media Dana, 1853 living on Sargassum cymosum C. Agardh, 1820 are described. The growth was continuous througth 12 stages for males and 9 for females. The sexual differentiation occours at 2th or 3th moult and was demonstrated by the enlargment of the gnatopod II propod. Number of eggs increased with the female head length. Observations of courtship behavior, incubation, moult processes, emergence of juveniles and brood caracteristics were made. The precopula courtship continued for two days, the eggs were incubated for six days and the juveniles, that stay until three days in the marsupium, moult every day.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphipods; Reproduction; Growth; Fecundity; Sargassum.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300008

Contribuição à biologia de serpentes da Bahia, Brasil: I. vivíparas
Provedor de dados: Zoologia
Autores: Lira-da-Silva,Rejane Maria; Casais-e-Silva,Luciana Lyra; Queiroz,Ilka Biondi de; Nunes,Tânia Brazil.
Great part of lhe avaiable data about snakes reprodution refers to species coming from subtropical and temperate regions. In Brazil, the data is rather rare and can be found in various works where information is restricted. Results from studies developed with five viviparous snakes - Crotalus durissus cascavella (Wagler, 1824). Bothrops erythromelas(Amaral, 1923), B. leucurus (Wagler, 1824), Helicops leopardinus (Schlegel, 1873) and Thamnodynastes strigilis (Thiinberg, 1787) - which come from the Northeast of Brazil (Bahia) are described. Data about pregnancy and birth, number, sex ratio, length and weight of neonates is given and discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Snakes; Viviparous.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000200002

Disease, food and reproduction of the maned wolf: Chrysocyon Brachyurus (Illiger) (Carnivora, Canidae) in southeast Brazil
Provedor de dados: Zoologia
Autores: Carvalho,Cory T. de; Vasconcellos,Luiz E. M.
The most frequent endoparasite of the Maned wolf - Chrysocyon brachyurus (Illiger, 1815) is the giant kidney-worm. Dioctophyma renale (Goeze, 1782). It has heen responsible for the majority of deaths of captive animals. Twenty-six marked wolves have been followed in the field with ear-tags and radio-collar tagged (Tab. II) to investigate their interactions with the environment, their diurnal shelters, movements and habits, and their delivery sites. Ten years of life history data have heen gathered. They are territorial and monogamous, and give birth to two or three young once a year, after a 63 days gestation, on average. Maned wolves inhabit the open areas and have omnivorous feeding habits.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maned wolf; C. brachyurus; Life history; Disease; Food; Reproduction.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300018

Description of the reproductive behavior of Symphysodon aequifasciatus (Cichlidae) in captivity
Provedor de dados: Acta Amazonica
Autores: MATTOS,Douglas da Cruz; SCRENCI-RIBEIRO,Rafaela; CARDOSO,Leonardo Demier; JUNIOR,Manuel Vazquez Vidal.
ABSTRACT The blue discus (Symphysodon aequifasciatus) is often sold for ornamental purposes. It is a neotropical cichlid from South America, which is native to the rivers of the Amazon basin of Brazil, Peru and Colombia. The purpose of this study was to characterize the reproductive behavior of S. aequifasciatus and identify features that can later be used by breeders to facilitate the handling and reproduction of this species in captivity. The experiment was divided into two stages: the first dealt with partner selection and couple formation to observe the behaviors of territoriality, pursuing, fleeing, biting, stay, protecting and cleaning of the substrate. The second stage documented mating behavior, nesting and parental care, to observe vibration,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian Fish; Ornamental Fish; Larviculture; Reproduction; Behavior.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400433

Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia
Provedor de dados: Acta Amazonica
Autores: BISNETO,Pedro Ferreira; KAEFER,Igor Luis.
ABSTRACT The pitviper Bothrops atrox is a widely distributed and medically important snake in Amazonia. Given that the reproductive and feeding biology of snakes varies geographically, we aimed to characterize the natural history of individuals from the central and southwestern portions of the biome. We analyzed museum-preserved specimens collected in the region between the metropolitan areas of the Brazilian cities of Manaus and Porto Velho. We took morphometric measurements and performed the analysis of gonads and digestive tracts of 109 individuals. Females attain sexual maturity with larger body sizes. Adults of the species show pronounced sexual dimorphism in body size, with females being larger. The reproductive cycle, especially in males, appears to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Natural history; Neotropics; Reproduction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200105

Reproductive aspects of Macrobrachium amazonicum (Decapoda: Palaemonidae) in the State of Amapá, Amazon River mouth
Provedor de dados: Acta Amazonica
Autores: Lima,Jô de Farias; Silva,Luis Mauricio Abdon da; Silva,Thibério Carvalho da; Garcia,Jamile da Silva; Pereira,Ilana da Silva; Amaral,Karlia Dalla Santa.
Macrobrachium amazonicum is an indigenous prawn vastly distributed in basins of South America, widely exploited by artisanal fisheries in northern and northeastern Brazil and, with great potential for aquaculture. This study aimed to investigate general aspects of population structure and reproductive characteristics (size at first maturity, fecundity and reproductive output) of M. amazonicum from two important areas to artisanal prawn fishing located at the mouth of the Amazon River, State of Amapá. The specimens were captured using 20 handcrafted traps called "matapi". A number of 5,179 prawns were captured, 2,975 females and 2,195 males resulting in 1.35:1 female to male ratio. Santana Island and Mazagão Velho showed females predominated in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Palaemonid eggs; First maturation; Fecundity; Morphometric relationships; Reproduction.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200010

Puberty in male collared peccary (Pecari tajacu) determined by quantitative analysis of spermatogenic cells
Provedor de dados: Acta Amazonica
Autores: Guimarães,Diva Anelie; Cardoso,Deise de Lima; Ferreira,Maria Auxiliadora Pantoja; Albuquerque,Natália Inagaki de.
Biological studies are necessary for the management of wildlife in captivity, and knowledge of reproduction is one of the important features for increasing production. The objective of the research was to determine the age at which male collared peccaries reach puberty. Testicular samples of 15 animals, aged 7 to 16 months, distributed into five groups (G1, G2, G3, G4 and G5) were used. The testes showed considerably increased weight, length and width (p &lt; 0.05) from G1 to G3, whereas, from this group onward, the development of this organ was slower. There was positive correlation (p &lt; 0.001) between the following testicular parameters: weight and length (r = 0.97), weight and width (r = 0.88), length and width (r = 0.92). Regarding the diameter of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Testicles; Spermatogenesis; Tayassuidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100012

Nestling development and data on nests and eggs of Topaza pella (Aves, Trochilidae) in Amapá state, northern Brazil
Provedor de dados: Acta Amazonica
Autores: FRANÇA,Pedro Ferreira; SANTOS,Wirley Almeida; COSTA-CAMPOS,Carlos Eduardo; LOPES,Edson Varga.
ABSTRACT The Crimson Topaz, Topaza pella, is the least known of the two hummingbird species of this exclusively Amazonian trochilid genus, that also includes T. pyra. Most available information on T. pella nests, young and reproductive behavior is based on anecdotal observations from Guyana in the 1930s and 1950s. Here, we provide new data on nest description, eggs and parental care of T. pella, and the growth and development of two nestlings over a 22-day period. We studied four nests in areas of dense terra firme forest in the state of Amapá, Brazil. All nests were in forked branches of shrubs over water bodies, and had a cup-like form. One nest contained two elongated white eggs, and another, two nestlings, which had their development recorded until...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Amazonia; Hummingbirds; Reproduction; Crimson Topaz; Parental care.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000200138

Couple formation and spawning between two female Discus Fish (Symphysodon aequifasciatus - Cichlidae) in captivity
Provedor de dados: Acta Amazonica
Autores: MATTOS,Douglas da Cruz; SCRENCI-RIBEIRO,Rafaela; CARDOSO,Leonardo Demier; JUNIOR,Manuel Vazquez Vidal.
ABSTRACT In an experiment performed to characterize the reproductive behavior of the discus fish in captivity, couple formation with two females was observed. The observations were carried out in captivity, based on ad libitum methodology. Adult individuals were allowed to naturally form couples. The couple formation was considered when individuals performed the substrate cleaning behavior. Fifteen couples were selected. The eggs of three couples did not initiate embryonic development and became infeasible within three days after spawning. We found that these spawnings belonged to all-female couples. The sex of the individuals in same-sex couples was confirmed through subsequent couple formation and spawning of fertile eggs with known males. Eggs were...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Reproduction; Behavior; Aquaculture; Amazonian fish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200167

The stimulatory effect of male agouti (Dasyprocta prymnolopha) on the onset of female puberty
Provedor de dados: Acta Amazonica
Autores: Guimarães,Diva Anelie de Araújo; Ramos,Rosemar Silva Luz; Garcia,Gary Wayne; Ohashi,Otávio Mitio.
The objective of this research was to analyze female agouti puberty. We did not observe the onset of puberty when the females were raised without males. When an adult male was put together with other adults and no cycling females, the onset of estrous cycle was observed after 10 to 60 days. When the young females were raised with a male, the onset of puberty was reached at 9 months. We concluded that the male agouti influences the onset of puberty in females, and that the dominant female, apparently, inhibits or delays the puberty of the other agouti females of the group. We suggest further studies be made concerning the social control of the reproduction of these animal.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agouti; Reproduction; Puberty; Estrous cycle; Captivity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672009000400004

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper
Provedor de dados: Acta Botanica Brasilica
Autores: Cassanego,Mara Betânia Brizola; Goldoni,Angélica; Heldt,Fágner Henrique; Osório,Daniela Montanari Migliavacca; Windisch,Paulo Günter; Droste,Annette.
Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at &gt; 10 mg L-1. Secondary leaves of sporophytes grown in concentrations &gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fern; Heavy metals; Pollution; Reproduction; Species conservation; Wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004

Abiotic environmental conditions for germination and development of gametophytes of Cyathea phalerata Mart. (Cyatheaceae)
Provedor de dados: Acta Botanica Brasilica
Autores: Marcon,Catiuscia; Silveira,Tatieli; Schmitt,Jairo Lizandro; Droste,Annette.
ABSTRACT In order to successfully establish themselves in their natural environment, ferns need habitats with abiotic conditions that are suitable for spore germination and gametophyte development. The objective of this study was to assess the influence of abiotic factors on the initial development of Cyathea phalerata cultivated in vitro. Spore germination and gametophyte development were assessed under varying conditions of surface sterilization, pH, temperature and photoperiod. Exogenous contamination was eliminated by sterilizing spores with 2.5 % NaClO for 15 min and sowing them into a culture medium supplemented with nystatin. Spores germinated at all pHs tested. Gametophytic development was faster in acidic pHs. Cultures at 25 °C exhibited the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic factors; Arborescent ferns; In vitro propagation; Reproduction; Spores.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100058

Pollination biology of melittophilous legume tree species in the Atlantic Forest in Southeast Brazil
Provedor de dados: Acta Botanica Brasilica
Autores: Pinheiro,Mardiore; Brito,Vinicius Lourenço Garcia de; Sazima,Marlies.
ABSTRACT This study describes the floral phenology and morphology, reproductive biology and pollinators for eight legume tree species, Schizolobium parahyba, Senna macranthera, and Senna multijuga (Caesalpinioideae), as well as Andira fraxinifolia, Lonchocarpus cultratus, Pterocarpus violaceus, Swartzia oblata, and S. simplex (Papilionoideae), in the Atlantic Forest in Southeast Brazil. All the studied species showed an annual flowering pattern, and almost all are of the cornucopia-flowering type, with the only exception being Swartzia oblata, which was of the steady-state type. In general, the legume flowers studied are conspicuous, mostly medium-sized, and offer nectar and/or pollen as a resource. Self-incompatibility associated with the production of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bee pollination; Bombus; Caesalpinioideae; Centridini; Euglossina; Faboideae; Floral biology; Reproduction; Self-incompatibility; Xylocopa.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300410

Reproductive morphology and phenological aspects of one morphological variant of Hypnea pseudomusciformis (Gigartinales, Rhodophyta)
Provedor de dados: Acta Botanica Brasilica
Autores: Jesus,Priscila Barreto de; Pestana,Edilene Maria dos Santos; Affe,Helen Michelle de Jesus; Rocha,Diogo Souza Bezerra; Caires,Taiara Aguiar; Nunes,José Marcos de Castro; Schnadelbach,Alessandra Selbach.
ABSTRACT Hypnea pseudomusciformis was recently described from South America, and has three morphological variants: “musciformis”, “nigrescens”, and “valentiae”. Information on the biology of these variants may help to explain this species’ wide morphological variation despite the absence of genetic divergence among variants. More morphological and ecological data has accumulated on the “musciformis” variant occurring on the Brazilian coast than for the others. In this study, we described the reproductive morphology of a tropical “nigrescens” population and investigated its phenology to provide crucial biological information about this taxon, and perhaps also assist in answering questions about the systematics of H. pseudomusciformis variants. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Cystocloniaceae; Ecology; Hypnea musciformis complex; Reproduction; Systematics.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100067

Ovary development, egg production and oviposition for mated and virgin females of the predator Podisus nigrispinus (Heteroptera: Pentatomidae) - doi: 10.4025/actasciagron.v33i4.6694
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Soares, Marcus Alvaranga; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Batista, Joana Darc; Universidade Federal de Viçosa; Zanuncio, José Cola; Universidade Federal de Viçosa; Lino Neto, José; Universidade Federal de Viçosa; Serrão, José Eduardo; Universidade Federal de Viçosa.
The Asopinae insects are generalist predators, and Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) is the most studied species of this group in Brazil. The objective was to study ovarian development, egg production and oviposition of mated and virgin P. nigrispinus females. Five 24-hours-old females were dissected and the ovaries were analyzed. Fifteen females of this predator were mated (T1), and another fifteen were individualized without mating (T2). The ovaries of five females per treatment were dissected and mature and immature eggs were counted. Five virgin females of P. nigrispinus at twenty days old were also analyzed. Twenty-four-hours-old P. nigrispinus females had low ovary development without the evidence of oocyte production. The...
Tipo: Pesquisa de laboratório
Palavras-chave: 5.01.02.02-8 biological control; Insect physiology; Oogenesis; Progeny; Reproduction Entomologia Agrícola biological control; Insect physiology; Oogenesis; Progeny; Reproduction.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6694

Effect of diets containing whole cottonseed on the quality of sheep semen - doi: 10.4025/actascianimsci.v34i3.12963
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Gomes, Maria das Graças; Empresa Estadual de Pesquisa Agropecuária da Paraíba S. A.; Mazzoni Gonzalez, Carmen Iara; Empresa Estadual de Pesquisa Agropecuária da Paraíba S. A.; Carvalho, Francisco Fernando Ramos de; Universidade Federal Rural de Pernambuco; Soares, Adriana Trindade; Empresa Estadual de Pesquisa Agropecuária da Paraíba S. A.
This study evaluated the semen quality of Santa Ines sheep fed diets containing different levels of whole cottonseed (WCS). Twenty sheep were distributed into four groups that were given diets with 0; 20; 30; 40% of WCS. For this study the semen was collected by electroejaculation, and a monthly andrological examination was performed during nine months. The analyzed variables were: scrotal circumference (SC), appearance and color of the ejaculate, progressive motility (PM), vigor, mass movement (MM), total sperm concentration (spzX109), sperm morphology (SM) and blood hematocrit. The SC had no difference among diets, with mean 31.83 cm. The animals fed diets with WCS, presented mean intake of 9.16 mg gossypol kg BW, and were prone to present greenish...
Tipo: Pesquisa de campo; análise laboratorial
Palavras-chave: 50400002-   50403001 andrological; Gossypol; Ram; Reproduction; Sperm motility.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12963

Ploidy influences on metabolic substrate deposition of rainbow trout
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Gomes, Aline Dal`Olio; Vieira, Vanessa Aparecida Rocha Oliveira; Tabata, Yara Aiko; Takahashi, Neuza Sumico; Moreira, Renata Guimarães; Ribeiro, Cristiele Silva.
Triploid fish are usually sterile. Thus, the energy and nutrients intended for sexual maturation may be available to enhance flesh quality and physical growth. The present study aimed to investigate differences in the metabolic substrates, lipids and proteins, between storage tissues from diploid and triploid female rainbow trout. Monthly, metabolic substrates were quantified in liver, muscle, and ovaries, which were collected during the first reproductive cycle. In general, it was possible to identify a seasonal and similar deposition of metabolites in different tissues of 2n and 3n females, mainly at early stages of gonadal maturation. However, from the stages 5-6, the ovaries showed great differences between ploidies, with higher concentration of lipids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolism; Reproduction; Triploidy; Somatic indexes; Oncorhynchus mykiss.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/44580

The effect of feeding inorganic and organic selenium sources on the hematological blood parameters, reproduction and health of dairy cows in the transition period
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Khalili, Mohsen; Chamani, Mohammad; Amanlou, Hamid; Nikkhah, Ali; Sadeghi, Aliasghar; Dehkordi, Farhad Kamali; Rafiei, Mohammad; Shirani, Vahid.
The purpose of this study was to investigate the effects of four types of diets containing different forms of selenium on the hematological blood parameters, reproduction and health of dairy cattle during the transition period. Twenty-four close-up dry cows with a mean of 259 ± 1days of pregnancy and expected 21 ± 1days prior to parturition were selected. The cows were fed four diets: 1) basal diet without selenium supplementation (C); 2) basal diet plus 0.5ppm selenium in the form of sodium selenite (Se-S) 3) basal diet plus 0.5ppm selenium in the form of selenium yeast (Se-Y); 4) basal diet plus 0.5ppm selenium in the form of selenomethionine (Se-M). Blood samples for measuring hematological blood parameters (including lymphocyte, red blood cells,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Selenium; Hematological blood parameters; Reproduction; Health; Dairy cows.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/45371

Comportamento diário e reprodutivo de fêmeas bovinas mestiças (Zebu x Holandesa) portadoras de dermatite digital - DOI: 10.4025/actascianimsci.v31i2.499
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Silva, Luiz Antônio Franco da; UFG; Franco, Leandro Guimarães; UFG; Ferreira, Allice Rodrigues; UnB; Bernardes, Karollina Moraes; Autônoma; Costa, Anna Carolina da; UFG; Rabelo, Rogério Elias; UFG.
No presente estudo avaliaram-se aspectos relacionados ao comportamento diário e reprodutivo de fêmeas bovinas mestiças (Zebu x Holandesa) portadoras de dermatite digital, durante um período de 24 meses. Os bovinos foram distribuídos em três grupos (GI, GII, GIII), compostos por dez animais cada. No GI foram alocadas fêmeas bovinas portadoras de dermatite digital na forma erosiva, no GII na forma verrucosa eo GIII composto por animais clinicamente saudáveis. No comportamento diário e alimentar, os animais foram observados no piquete e durante a ordenha. Avaliaram-se a atitude do animal, se em posição quadrupedal ou decúbito, período de alimentação, frequência de ingestão de água, tempo de ruminação e ócio. Quanto ao comportamento reprodutivo, estudaram-se o...
Palavras-chave: 5 5.04.00.00-2 Zootecnia bovinos; Casco; Doença podal; Reprodução 5 5.04.00.00-2 Zootecnia cattle; Hoof; Foot disease; Reproduction.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/499

Qualidade do sêmen em tilápia do Nilo (Oreochromis niloticus), alimentadas com dietas contendo diferentes níveis de vitamina C - doi: 10.4025/actascianimsci.v32i3.7836
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Mataveli, Marcela; UEM; Moraes, Gentil Vanini de; UEM; Streit Junior, Danilo Pedro; Universidade Federal do Rio Grande do Sul; Ribeiro, Ricardo Pereira; UEM; Gasparino, Eliane; UEM.
A vitamina C atua na proteção de danos celulares provocados pelos radicais livres, sendo a suplementação considerada essencial para a maioria das espécies de peixes, uma vez que não a sintetizam em função da ausência da enzima L-gulonolactona oxidase. Assim, avaliou-se o efeito da suplementação de 0, 75, 150 e 225 mg de vitamina C kg-1 de ração na qualidade do sêmen em tilápias do Nilo (Oreochromis niloticus). Os parâmetros quali-quantitativos do sêmen não foram influenciados pela suplementação de vitamina C, exceto a motilidade progressiva que aumentou linearmente com adição de vitamina C. Conclui-se que os reprodutores de tilápias do Nilo devem ser suplementados com 225 mg de vitamina   C kg-1 de ração.
Tipo: Pesquisa de campo e análise laboratorial
Palavras-chave: 5.00.00.00-4; 5.05.00.00-7 Antioxidante; Radicais livres; Reprodução; Suplementação 5.05.04.00-2 Antioxidant; Free radicals; Reproduction; Supplementation.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/7836

Histological evidence of reproductive activity in lizards from the APM Manso, Chapada dos Guimarães, Mato Grosso State, Brazil - doi: 10.4025/actascibiolsci.v34i3.9228
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Cassel, Mônica; Universidade Federal de Mato Grosso; Strussmann, Christine; Universidade Federal de Mato Grosso; Ferreira, Adelina; Universidade Federal de Mato Grosso.
The construction of dams causes major impacts on fauna by changing or eliminating irreversibly their habitats. The resulting changes lead to deep potential modifications on reproductive biology and population structure of lizards, snakes and amphisbaenas. The reservoir in the Multiple Use Area of Manso (APM-Manso) is located near to Chapada dos Guimarães National Park, in Mato Grosso State. We analyzed comparatively the male gonads of Anolis meridionalis, Colobosaura modesta, Cercosaura ocellata, Cnemidophorus ocellifer, Hoplocercus spinosus, Bachia bresslaui, Mabuya frenata, Micrablepharus atticolus and Tropidurus oreadicus, from APM-Manso, aiming to verify possible changes in the reproductive success according to environmental changes. Before the...
Tipo: Estudos morfológicos
Palavras-chave: 2.06.03.00-2 lizards; Reproduction; Habitat modification; Histology Histologia.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9228

Length-weight relationship and reproductive activity of the Leporinus piau Fowler, 1941 captured in a small deactivated hydropower plant - doi: 10.4025/actascibiolsci.v35i3.17675
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Padilha, Geraldo Eustáquio Valente; Faculdade de Ciências, Filosofia e Letras do Alto São Francisco / Faculdade Pitágoras; Carvalho, Júnia Aparecida Bernardes Afonso de; Faculdade de Ciências, Filosofia e Letras do Alto São Francisco; Boncompagni-Júnior, Orion; Faculdade de Ciências, Filosofia e Letras do Alto São Francisco; Domingos, Fabrício Flávio Theophilo; Universidade Federal de Minas Gerais; Thomé, Ralph Gruppi; Universidade Federal de São João Del Rei / Universidade Federal de Juiz de Fora.
Reproductive activity of ‘piau gordura’ Leporinus piau was studied using biometric, macroscopic and microscopic analysis. A total of 74 specimens of L. piau were collected quarterly from January to December 2005 in a small deactivated  hydropower plant located at Jorge Pequeno Stream and preserved in a fixative solution until analysis. The alterations after fixation were evaluated. The stages of gonadal maturation were determined by histology and gonadosomatic index (GSI). The females and males in the spawning capable and regressing stage were registered from October to December. L. piau is total spawning and the HSI (hepatossomatic index), SRI (stomach repletion index) and CFI (coelomic fat index) of females and males did not showed a statistical...
Tipo: Morphological studies
Palavras-chave: Anostomidae; Reproduction; Biological indexes; Tributary; São Francisco river.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17675

Reprodução de Lytechinus variegatus (Echinodermata: Echinoidea): efeito do ciclo lunar e características da população - doi: 10.4025/actascibiolsci.v33i3.5124
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Lage, Alexandra Mara Cruz; UFES; Joyeux, Jean-Christopher; UFES; Gomes, Levy de Carvalho; UVV.
Este estudo avaliou as características reprodutivas de uma população do ouriço do mar Lytechinus variegatus e a influência do ciclo lunar na liberação de gametas. Foram realizadas oito coletas para avaliação do índice gonadossomático (IG) e dos parâmetros populacionais relacionados com a reprodução. Para avaliação do efeito da Lua na liberação de gametas foram realizadas coletas em três ciclos lunares completos. Ao todo foram coletados 295 indivíduos, sendo 156 machos e 131 fêmeas (proporção 1,19:1), porém não houve diferença significativa na proporção sexual da população. O peso dos machos foi significativamente maior que o das fêmeas, porém não houve diferença significativa no IG, peso gonadal e diâmetro entre os sexos. Com a amplitude no diâmetro dos...
Tipo: Reprodução
Palavras-chave: 2.05.00.00-9 ouriço do mar; Reprodução; Ciclo lunar; Espírito Santo Ecologia sea urchin; Reproduction; Lunar cycle; Espírito Santo.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5124

Maternal and fetal toxicity of Wistar rats exposed to herbicide metolachlor
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Tavares Vieira, Kátia Cristina de Melo; Couto, Jennifer Cardoso; Zanetti, Edson; Sanches Junior, José Marcos; Favareto, Ana Paula Alves.
Metolachlor is a selective pre-emergent herbicide widely used in agriculture to control weeds. The aim of this study was to evaluate the possible effects of metolachlor on reproductive performance of adult rats, as well as its teratogenic potential when administered during the period of organogenesis. Pregnant adult female rats were allocated into 4 experimental groups (n = 10 group-1), that received 0 (control); 150 (TA); 300 (TB); or 1000 mg kg-1 bw day-1 (TC) of metolachlor, by gavage, from the 6th to 15th gestational day (GD). There is reduction in the weight gain of the animals from TB and TC groups compared to the control group. Liver and placenta weights were reduced in TB and TC groups, respectively, while the percentage of post-implantation loss...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticide  reproduction  teratogenicity  fetus pesticide; Reproduction; Teratogenicity; Fetus.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/29079

Population structure of fishes from an urban stream
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Zanatta, Naiara; Pazianoto, Laryssa Helena Ribeiro; Cionek, Vivian de Mello; Sacramento, Patrícia Almeida; Benedito, Evanilde.
 The aim of this study was to identify the population structure of the ichthyofauna in an urban stream within an environmental protection area in southern Brazil. Quarterly samplings were conducted between October 2009 and August 2010. Poecilia reticulata was the most abundant species, followed by Hypostomus ancistroides and Rhamdia quelen. It was found a higher proportion of adults instead of juveniles from P. reticulata and R. quelen populations, while the opposite was recorded for H. ancistroides. Sex ratio of 1:1 was found for H. ancistroides, but differed significantly for P. reticulata and R. quelen. Females of P. reticulata and R. quelen reached higher length than males in the smaller and higher length-classes, while H. ancistroides females were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sex ratio; Reproduction; Population attributes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31899

Temporal distribution of ichthyoplankton in the Forquilha river, upper Uruguay river – Brazil: Relationship with environmental factors  - doi: 10.4025/actascibiolsci.v36i1.17993
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Lopes, Carolina Antonieta; Universidade Federal de Santa Catarina; Garcia, Valquíria; Universidade Federal de Santa Catarina; Reynalte-Tataje, David Augusto; Universidade Federal de Santa Catarina; Zaniboni-Filho, Evoy; Universidade Federal de Santa Catarina; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina.
  This study aimed to evaluate the temporal distribution of fish eggs and larvae in the Forquilha river (upper Uruguay river/Brazil) and its relationship with environmental variables. Ichthyoplankton and abiotic factors were sampled from September 2006 to August 2007. At the laboratory, samples were sorted and larvae were identified to the lowest possible taxonomic level. For data analysis we applied One-way Anova, Tukey’s test, Pearson correlation and PCA. In this study 200 eggs and 308 larvae were collected, showing differences in the temporal distribution and influence of abiotic factors. Larvae were identified in all stages of development, being distributed in three order and eight families. These results point that the lower portion of the Forquilha...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs and larvae; Fish; Reproduction; Abiotic variables.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17993

Biologia populacional de Imparfinis minutus (Siluriformes, Heptapteridae) na microbacia do Ribeirão Grande, serra da Mantiqueira oriental, Estado de São Paulo - doi: 10.4025/actascibiolsci.v33i3.6591
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Moraes, Mariana Bissoli de; UNESP- Campus de Rio Claro; Braga, Francisco Manoel de Souza; UNESP- Campus de Rio Claro.
O presente trabalho teve por objetivo estudar a biologia e distribuição de Imparfinis minutus na microbacia do Ribeirão Grande (22º47´08´´S, 45º28´17´´W), serra da Mantiqueira oriental, nos períodos de julho e outubro de 2001 e janeiro e abril de 2002. Dentre as 37 espécies amostradas, I. minutus (Siluriformes, Heptapteridae) distribuiu-se desde o pediplano, até a planície do Vale do Paraíba, e esteve associada a ambientes pouco profundos, com substrato constituído principalmente por pedra, cascalho e matacão. O comprimento total dos indivíduos na população variou de 4,75 a 12,75 cm. A curva ajustada da relação peso-comprimento para a população foi p = 0,0052 C3,13. Os fatores de condição alométrico (Ka) e relativo (Kr) apresentaram tendências semelhantes,...
Tipo: Relação peso-comprimento; Aspectos reprodutivos e alimentares
Palavras-chave: 2.04.00.00-4; 2.05.00.00-9 Alimentação; Reprodução; Fator de condição; Imparfinis minutus Zoologia Feeding; Reproduction; Condition factor; Imparfinis minutus.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6591

Post-natal development of rats` offspring treated with the ethanol extract of Neem leaves (Azadirachta indica A. Juss) during pregnancy and lactation
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Silva, Vanessa Carla Lima da; Silva, Francine Maria de França; Meunier, Isabelle Maria Jacqueline; Silva, Tânia Maria Sarmento da; Silva Júnior, Valdemiro Amaro da; Maia, Frederico Celso Lyra.
Teratogenicity and developmental abnormalities in the offspring of female rats that ingested ethanol extract of Neem plants during pregnancy and lactation period were assessed. Twenty-four female Wistar rats were randomly distributed in control group and in three experimental groups and treated during the 4th, 5th, and 6th day of pregnancy. After birth, the lactating females received, by gavage, 65, 135 and 200 mg kg-1 of Neem ethanol extract, during 15 days. Results show, there was no significant difference in body mass index of neonatal rats in the 4 groups evaluated, whereas mean rate of offspring survival was 79.4%. Hair growth, incisor teeth eruption, ear detachment, eyelid opening, and spontaneous ambulation were similar for all groups. Likewise,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morfologia e toxicologia medicinal plant; Reproduction; Teratogenicity; Physical development; Rodents Morfologia animal e Toxicologia.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24976

Biotic potential, fertility and life table ofSpodoptera albula (Walker) (Lepidoptera: Noctuidae), under controlled conditions
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: MONTEZANO,DÉBORA G.; SPECHT,ALEXANDRE; SOSA-GÓMEZ,DANIEL R.; ROQUE-SPECHT,VÂNIA F.; BORTOLIN,TARCISO M.; FRONZA,EDEGAR; PEZZI,PATRÍCIA; LUZ,PRISCILA C.; BARROS,NEIVA M.
This study aimed to evaluate the biotic potential, life table parameters and fertility of Spodoptera albula (Walker, 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photo phase). The longevity, pre, post and oviposition periods, fecundity and fertility of 13 couples were evaluated. The longevity of females (13.500 days) was significantly higher than those of males (11.154 days). The mean durations of the pre, post and oviposition periods were 2.615, 1.769 and 9.385 days, respectively. The mean fecundity was 1.417.69 eggs and mean fertility was 1.340.401 larvae, per female. On average, females copulated 1, 231 times. A strong positive correlation was observed between the number of copulations and fecundity (r = 0.847, p &lt;0.001), as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200723

Atrazine and nicosulfuron affect the reproductive fitness of the predator Podisus nigrispinus (Hemiptera: Pentatomidae)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: REIS,TATIANE C.; SOARES,MARCUS A.; SANTOS,JOSÉ B. DOS; SANTOS,CONCEIÇÃO A. DOS; SERRÃO,JOSE EDUARDO; ZANUNCIO,JOSÉ C.; FERREIRA,EVANDER A.
Abstract Herbicides can impact non-target metabolic pathways in natural enemies and lead to the reduction of these populations in the field. Behavioral characteristics, morphology and histology of reproductive structures and reproduction of females of Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) were evaluated under the effect of the herbicides atrazine, nicosulfuron and the mixture of both. The number of mature oocytes per ovary was lower in females exposed to the herbicides atrazine, nicosulfuron and the mixture of both. Herbicides did not affect the longevity and mortality of P. nigrispinus, therefore, they are selective for this predator. On the other hand, herbicides can cause sublethal effects by affecting the reproduction of predators.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Histology; Morphology; Reproduction; Herbicides.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703625

Clutch size in populations and species of cnemidophorines (Squamata: Teiidae) on the eastern coast of Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: MENEZES,VANDERLAINE A.; ROCHA,CARLOS F.D.
We analyzed some reproductive aspects of 16 coastal populations, belonging to five lizard species (A. ocellifera, A. abaetensis, A. nativo, A. littoralis and C. lacertoides) from different restinga habitats along the eastern coast of Brazil. This study aimed to evaluate to what extent the reproductive aspects vary geographically and among species. For each female, we recorded the number of vitellogenic follicles, size and color of the largest follicle, presence and size of corpora lutea, and number and size of oviductal eggs. Clutch size of almost all coastal populations/species of Ameivula had little variation and most clutches were composed of two eggs. There was a significant relationship between female size and the mean clutch size when females from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clutch size; Ameivula; Reproduction; Restinga.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200707

Morphological and histological characterization of sexual segment of the kidney in Notomabuya frenata (Cope, 1862) and Aspronema dorsivittatum (Cope, 1862) (Squamata, Mabuyidae)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: NOVELLI,IARA A.; OLIVEIRA,PAOLA R. DE; CASTAÑON,MARIA CHRISTINA M.N.; SILVA,PILAR C.; SOUSA,BERNADETE M. DE.
Abstract The kidneys in two viviparous species of Neotropical lizards, Notomabuya frenata and Aspronema dorsivittatum (Mabuyidae), were investigated by light and scanning electron microscopy in order to determine the presence of the sexual segment of the kidney (SSK) and to study its morphology. The individuals used in this study belong to the Herpetological Collection of the Herpetology Laboratory - Reptiles of the Federal University of Juiz de Fora (CHUFJF-Reptiles) and they were collected between the years 2008 and 2012 from the Cerrado region in the state of Minas Gerais, Brazil. The SSK was present only in sexually mature males (with sperm in the testes / epididymis), whereas it was absent in sexually immature males. The nephron in both species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Accessory organ; Reproduction; Secretion granules; Skinks; Urogenital system.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502267

Relationship between testicular lesion and hormone levels in male rats infected with Trypanosoma evansi
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: FACCIO,LUCIANA; SILVA,ALEKSANDRO S. DA; TONIN,ALEXANDRE A.; OBERHERR,LUCAS; GRESSLER,LUCAS T.; OLIVEIRA,CAMILA B.; OLIVEIRA,DIONATAN T.; SANGOI,MANUELA B.; MORESCO,RAFAEL N.; SAMARA,YASMIN N.; VEIGA,MARCELO; DUARTE,MARTA M.M.F.; MONTEIRO,SILVIA G.
The aim of this study was to evaluate the relationship between testicular lesions and hormone levels in rats experimentally infected with Trypanosoma evansi. For that, the measurement of reproductive hormones, histopathology and biomarkers of cellular injury were carried out in twenty-four animals, which were divided into two groups with 12 animals each. Group A was the negative control, or uninfected, while group B was composed by animals infected with T. evansi. Both groups were divided again into two other subgroups (n=6), from which serum and testicular fragments were collected on days 5 (A1 and B1) and 15 (A2 and B2) post-infection (PI). The morphological analysis showed increased alterations of head and tail of sperm in infected rats when compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protozoa; Wistar rats; Testicular lesion; Reproduction; Oxidative stress.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301537

Reproductive biology of the Green Ground Snake Erythrolamprus poecilogyrus sublineatus (Serpentes: Dipsadidae) in Subtropical Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: QUINTELA,FERNANDO M.; MARQUES,WILIAM C.; LOEBMANN,DANIEL.
ABSTRACT  We investigated reproductive features of the dipsadid snake Erythrolamprus poecilogyrus sublineatus in the southernmost Brazilian coast, a subtropical region characterized by well-marked seasons. Females are significantly smaller than males, have a shorter tail, and reach sexual maturity at later times along their development. In contrast to tropical subspecies, E. p. sublineatus females presented a seasonal pattern, with secondary follicles occurring from late winter to early autumn and egg production restricted to the whole spring and early summer. Males presented seasonal variation in testes volume (increase in autumn and decrease in winter) while no significant seasonal variation was found in ductus deferens width. The number of oviductal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecology; Neotropics; Pampa Biome; Reproduction; Squamata.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502189

Biological variables of Hypostomus francisci (Siluriformes: Loricariidae) from Itapecerica River, Minas Gerais State, Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SALES,CAMILA F.; DOMINGOS,FABRÍCIO FLÁVIO T.; BRIGHENTI,LUDMILA S.; RIBEIRO,ROSY I.M.A.; SANTOS,HÉLIO B.; THOMÉ,RALPH G.
ABSTRACT Herein we determine for the first time the reproduction parameters and population structure of Hypostomus francisci in the Itapecerica River, São Francisco Basin. A total of 250 specimens was captured quarterly between March 2010 and February 2012. Body weight, total length and weight of the gonads were obtained in the laboratory. Gonad samples were submitted to histological and histochemical techniques. Females with spawning capable ovaries were used to determine the fecundity and relative fecundity. Sex ratio with 1:1.01 (female:male) was observed. Males were more numerous than females for individuals smaller than 170 mm, however the number of females was significantly greater for specimens larger than 330 mm. The length-weight relationship...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fecundity; Gametogenesis; Neotropical freshwater fish; Population structure; Reproduction.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501603

Histopatology of the reproductive tract of Nellore pubertal heifers with genital ureaplasmosis
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: PÔRTO,REGIANI; OLIVEIRA FILHO,BENEDITO; FERRAZ,HENRIQUE; CAIXETA,LUCIANO; VIU,MARCO ANTONIO; GAMBARINI,MARIA LÚCIA.
ABSTRACT In order to study and characterize the lesions in the reproductive tract of Nellore heifers naturally infected with Ureaplasma diversum and presenting granular vulvovaginitis syndrome (GVS), fragments of uterine tube, uterus, cervix, vagina and vulva of 20 animals were evaluated. The macroscopic lesions of the vulvovaginal mucosa were classified in scores of “1” mild, until “4”, severe inflammation and pustular or necrotic lesions. The histopathological evaluation was performed using scores of “1” to “4”, according to the inflammatory alterations. The fragments with severe microscopic lesions (3 and 4) were from the uterine tubes and uterus, which showed leukocytes infiltration and destruction and/or necrosis of epithelium. Alterations in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Tissue evaluation; Reproduction; Ureaplasma diversum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602987

Reproduction and structure of the population of the Chaetognath Parasagitta friderici in Guanabara Bay (Brazil) based on short term sampling
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: Mendes,Fabiana; Figueiredo,Gisela M. de; Valentin,Jean L.
The aim of this study was to describe the total density, densities of developmental stages and the reproduction period of Parasagitta friderici. Weekly samples were collected at one station in the channel of Guanabara Bay, Rio de Janeiro, during one year. Three vertical hauls were made for each sample, and P. friderici was separated, the developmental stages were identified, and body length (BL), ovary length (OL) and seminal vesicle width (SVW) were measured. Throughout the year P. friderici was the most abundant chaetognath species occurring in all four developmental stages, the densities of which varied from week to week. Higher densities of adults occurred in the spring, followed by peaks of juveniles in the summer. Although P. friderici seems to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chaetognath; Development stage; Guanabara Bay; Reproduction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100010

Reproductive aspects of the semi-aquatic snake Erythrolamprus miliaris (Dipsadidae: Xenodontini) in the state of Rio de Janeiro, southeastern Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: EISFELD,ALEXIA; VRCIBRADIC,DAVOR.
Abstract: We analyzed some aspects of reproduction and sexual dimorphism of the semi-aquatic dipsadid snake Erythrolamprus miliaris in the state of Rio de Janeiro, southeastern Brazil. We detected sexual dimorphism in body size (snout-vent length), with females averaging larger than males, but no sexual dimorphism in the relative length of the tail. Oviductal eggs and secondary follicles were found in all seasons, suggesting that female reproductive cycles are continuous, in spite of the tropical seasonal climate in the region. Reproductive males were present throughout the year, suggesting a continuous cycle for males as well. Clutch size averaged 10.3 ± 4.8 (range 4-21) and there was a positive and significant relationship between clutch size and female...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Reproduction; Sexual dimorphism; Squamata.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100632

Gonadal development in the freshwater crab Sylviocarcinus pictus (H. Milne Edwards, 1853) (Brachyura: Trichodactylidae) from the Guamá river, state of Pará, Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: Silva,Leiliane S.; Martinelli-Lemos,Jussara M.; Ferreira,Maria Auxiliadora P.; Rocha,Rossineide M.
The development stages of male and female gonads in the freshwater crab Sylviocarcinus pictus (H. Milne Eduards, 1853) were described through macroscopic and microscopic (histology) examinations. The histological description was based on 40 specimens (20 each sex). Four gonadal development stages were found for females: immature, ripening, mature and spawned. The following female cells were found: ovogonia, oocytes in initial vitellogenesis, oocytes in advanced vitellogenesis, follicular cells and post-ovulatory follicles. Three development stages were found for males: immature, maturing and mature, with the indication of: spermatogonia, spermatocytes, spermatids, spermatozoids and spermatophores. These data suggest the pattern described in the literature....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon estuary; Gonadal histology; Reproduction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300021

The quantification of testicular cells during the postnatal development in two Caviomorph rodents: the guinea pig (Cavia porcellus) and the cutia (Dasyprocta agouti)
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SIMÕES,LUCIANA S.; SASAHARA,TAIS H.C.; FAVARON,PHELIPE O.; MARQUES JÚNIOR,RICARDO; OLIVEIRA,MOACIR F. DE; MACHADO,MÁRCIA R.F.; MIGLINO,MARIA ANGELICA.
ABSTRACT The germinative, Sertoli and Leydig cells of two caviomorph rodents (Cavia porcellus and Dasyprocta agouti) were counted as well as the estimation of the total volume of the testis and the total volume of seminiferous tubules and interstitium in prepubertal, pubertal and adult animals. The number of spermatogonia, spermatocytes and spermatids cells increased during the pubertal phase in both rodents, notably the spermatid cells. The spermatocyte and spermatid slightly decreased in the adult of both rodents, but the increment in spermatogonia cells number was seen, mainly in cutias. The number of Sertoli cells increased in pubertal rodents, but in the adult the number reduced. Substantial number of Leydig cells was counted in pubertal and adult...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germinative cells; Hystricomorpha; Reproduction; Stereology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401745

Reproductive biology of Echinometra lucunter (Echinodermata: Echinoidea) in a northeast Brazilian sandstone reef
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: Lima,Eduardo J.B.; Gomes,Paula B.; Souza,José R.B.
The edible sea urchin Echinometra lucunter (Linnaeus, 1758) is a very common species on the sublittoral-midlittoral in Brazilian rocky shores. The aim of this work was to describe the gametogenesis and reproductive strategy of the E. lucunter population at Muro Alto beach in the Northeast coast of Brazil from August 2004 to August 2005. A total of 240 specimens were collected on the sandstone reef flat from a tidepool during spring low tides. The overall sex ratio was1.12:1,withoutsignificanttemporalvariationexceptinOctober2004. Firsts sexual maturity ocurred in individuals from a diameter of 20.8 mm. There was not a significant difference in gonad index between females and males during the sampling period. The female's gonad index variation was associated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beach rock; Brazil; Echinodermata; Reproduction; Sea urchin.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000100007

Reproduction and management of the mangrove crab Ucides cordatus (Crustacea, Brachyura, Ucididae) at Iguape, São Paulo, Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SANT'ANNA,BRUNO S.; BORGES,ROBERTO P.; HATTORI,GUSTAVO Y.; PINHEIRO,MARCELO A. A.
The mangrove crab Ucides cordatus is one of the most exploited crustaceans in Brazil. The present study investigated the breeding season of this species and the period of the “andada” phenomenon, when the crabs are active outside their burrows and perform agonistic behaviors. Furthermore related them to environmental factors, in a mangrove on the coast of Brazil, with inferences about management of this crab. The crabs reproduced from October through February. The “andada” occurred from November through February, with typical characteristics in the first two months, during the full and new moon periods, and was influenced positively by the air and soil temperature, luminosity, and tidal amplitude, and negatively by salinity. Based on the results of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Crab; Mangrove; Management; Reproduction.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301411

Cryopreservation of mutton snapper (Lutjanus analis) sperm
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SANCHES,EDUARDO G.; OLIVEIRA,IDILI R.; SERRALHEIRO,PEDRO C. DA SILVA; CERQUEIRA,VINICIUS R.
This study aimed to develop a protocol of semen cryopreservation of the mutton snapper Lutjanus analis. The interaction between three extenders ( pH 6.1; 7.8 and 8.2) , two concentrations of dimethyl sulfoxide ( DMSO, 5 and 10%) and three cooling rates ( -90; -60 and -30°C.min−1) on the sperm motility rate and motility time were analyzed by a factorial experiment. A sample of 30 fishes ( 1,261 ± 449 g) collected in the nature was kept in floating net cages. The semen was frozen by using cryogenic straws, in nitrogen vapour and transferred, later, to liquid nitrogen. Fertilization test was accomplished to evaluate the viability of the cryopreserved sperm. The highest sperm motility rate and motility time ( P &lt; 0.05) was achieved by combining extender C (...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryoprotector; Extender; Lutjanus analis; Reproduction; Sperm.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301083

Schistosoma mansoni polo-like kinases and their function in control of mitosis and parasite reproduction
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: Dissous,Colette; Grevelding,Christoph G; Long,Thavy.
Polo-like kinases are important regulators of cell cycle progression and mitosis. They constitute a family of conserved serine/threonine kinases which are highly related in their catalytic domains and contain polo boxes involved in protein-protein interactions and subcellular localization. In mammals, five Plks (Plk 1-5) encompass diverse roles in centrosome dynamics, spindle formation, intra S-phase and G2/M checkpoints and DNA damage response. Plk1 is a key positive regulator of mitosis and is overexpressed in various types of cancers. Plk4 is a divergent member of the Plk family, with essential functions in centriole duplication. Homozygous disruption of Plk1 or Plk4 in mice is lethal in embryos. Two Plk members SmPlk1 and SmSak, homologous to Plk1 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cell cycle; Polo-like kinases; Reproduction; Schistosoma mansoni.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200022

Correlations of condition factor and gonadosomatic, hepatosomatic and lipo-somatic relations of Leptodactylus macrosternum (ANURA: Leptodactylidae) in the Brazilian Semi-arid
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: CHAVES,MARCIO F.; TENÓRIO,FERNANDA C.M.A.; SANTOS,IGOR L.V.L.; J.C.L. NETO,CLOVIS; TEXEIRA,VALERIA W.; MOURA,GERALDO J.B.; TEXEIRA,ÁLVARO A.C.
ABSTRACT The objective of this study was to assess variations of the condition factor (K1) in relation to the gonadosomatic- RGS and energy reserves (hepatosomatic - RWL and liposomatic - RFB relations) of Leptodactylus macrosternum and their relationship to climate variation in the Northeast of Brazil, Caatinga area, state of Paraiba. The animals were captured fortnightly through active collecting, between January and December 2013. Significant differences were observed in the monthly variations of K1, RGS and RFB indices in male and female L. macrosternum over the months of collection. In males, K1 showed no significant relationship with the other variables. In females, RGS values only show notable correlations with RWF and K1 values. K1 values showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurans; Fatty bodies; Northeast; Reproduction; Seasonality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401591

Mating, ovipositional rhythm and fecundity of Nezara viridula (L.) (Heteroptera: Pentatomidae) fed on privet, Ligustrum lucidum Thunb., and on soybean, Glycine max (L.) Merrill fruits
Provedor de dados: Anais da Sociedade Entomológica do Brasil
Autores: Panizzi,Antônio R.; Mourão,Ana P.M.
Laboratory studies were conducted on mating, ovipositional rhythm, and fecundity of the southern green stink bug, Nezara viridula (L.) fed on immature fruits of privet, Ligustrum lucidum Thunb. and soybean, Glycine max (L.) Merrill. A greater number of pairs were observed mating on privet (27 to 37 %) than on soybean (22 to 23 %). The preoviposition period was significantly shorter when females fed on privet (15.5 days) than when they fed on soybean (23.9 days). The intervals of time between the first four ovipositions, and between the 1st and the 4th oviposition were shorter on privet than on soybean (range of 1.9 to 3.3 days less on the former food). Greater percentage of females N. viridula oviposited and showed greater fecundity on privet than on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Hemiptera; Reproduction; Copulation; Fecundity; Food.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000100003

Acción de inhibidores de la síntesis de la quitina en la reproducción de Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)
Provedor de dados: Anais da Sociedade Entomológica do Brasil
Autores: Lyra,Jairo R. M.; Ferraz,José M. G.; Silva,Ana P. P.
The effect of benzoilfenylureas on the reproduction of Spodoptera littoralis (Boisd.) was studied. Third instar larvae were treated with either lufenuron or flufenoxuron by ingestion and contact (DL60 rate). The surviving larvae were observed until the adult stage. Adult males and females were mated in different combinations between treated and untreated individuals. The following variables were studied: average number of spermatophore, female fecundity and percentage of ecloded larvae (egg viability). A small change in spermatophore number (ca. 1 to 1.5) was noted specially in the combinations where males were obtained from treated larvae. The percentage of fecundity of females and hatched larvae decreased (ca. 45% and 30%) when both sexes were obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Moth; Chitin synthesis inhibitor; Reproduction.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000400009

Semen collection and evaluation of captive coatis (Nasua nasua)
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Paz,R.C.R.; Morgado,T.O.; Viana,C.T.R.; Arruda,F.P.; Nascimento,D.O. Bezerra do; Guimarães,L.D’A.
Semen samples (n=105) were collected through eletroejaculation from six adult male coatis (Nasua nasua) between January 2007 and December 2008 at Universidade Federal de Mato Grosso Zoo, Cuiabá, Brazil. Mean values were: volume (mL); concentration (sperm/mL); total motility (%); progressive sperm motility (scale, 0-5); live spermatozoa (%); acrossome integrity (%); primary defects (%); and secondary defects (%). There was high correlation between total motility and live sperm; total motility and progressive sperm motility; total motility and acrossome integrity; live sperm and progressive motility; live sperm and acrossome integrity and volume and concentration. The method for semen collection was considered safe and efficient. It can be used for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Procyonidae; Semen; Eletroejaculation; Reproduction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000200010

Influence of feeding differentiation on the age at onset of puberty in Brazilian Bergamasca dairy ewe lambs
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Dantas,A.; Siqueira,E.R.; Fernandes,S.; Oba,E.; Castilho,A.M.; Meirelles,P.R.L.; Sartori,M.M.P.; Santos,P.T.R.
The objective of the study was to evaluate body growth and age at onset of puberty on lambs fed two specific diets for low and high growth rates. A herd of 20 Brazilian Bergamasca lambs was divided in two groups (n= 10) and kept confined throughout the experimental period, two animals of the same treatment/pen. Two phases were established: Phase 1, from 90 days of age until the onset of puberty; and Phase 2, from puberty onset up to 1 year old. For Phase 1, two distinct diets were formulated, being: Treatment A, which was formulated to obtain an average daily gain of approximately 150g; and Treatment B, for an average daily gain of about 250g. In Phase 2, a balanced, equal diet was provided to both groups. Every 14 days, the animals were weighed and given...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrition; Performance; Reproduction; Growth hormone; Sheep.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100022

Reproduction of the surubim catfish (Pisces, Pimelodidae) in the São Francisco River, Pirapora Region, Minas Gerais, Brazil
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Brito,M.F.G.; Bazzoli,N.
The reproductive biology of the surubim, P. coruscans of the São Francisco River, in the Pirapora region was studied from December/98 to November/99. Reproduction occurred between October and January with high frequency of fishes in the advanced ripening/mature and spawned/spent stages along with higher values of the gonadosomatic index. Macroscopic and microscopic analyses indicated that P. coruscans presents total spawning. The reproductive period coincided with highest rainfall and water turbidity values in the region. The smallest male captured had a total length of 63.3cm and the smallest female 92.0cm in total length. The largest male in the maturation stage was recorded to be 97.0cm and the largest female 144.1cm in total length. Surubim were more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Surubim catfish; Pseudoplatystoma coruscans; Reproduction; Spawning; São Francisco River; Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352003000500018

Reproductive dynamics of Leporinus obtusidens captured downstream from an important hydropower Station in Brazil
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Andrade,E.S.; Felizardo,V.O.; Murgas,L.D.S.; Drumond,M.M.; Zangerônimo,M.G.; Costa,S.F.
This study evaluated the reproductive dynamics and gonadal morphology of piaparas (Leporinus obtusidens) captured downstream from the Funil Hydroelectric Power Station. The 107 piaparas evaluated were captured monthly from Sep 2006 to Aug 2007. The data were stratified among the seasons to evaluate gonad maturation and the reproductive period was determined by assessing the gonadosomatic index, hepatosomatic index, abdominal fat index (AFI), weight:length ratio, condition factor and sexual proportion. The reproductive period lasted from winter to summer (Jul-Mar) in females and from spring to autumn (Sept-Jun) in males. AFI was high during and after the reproductive period in females and only during the reproductive period in males. The highest HIS values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Reproduction; Piracema; Histology; Gonad.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500021

Use of a GnRH synthetic analog (buserelin) for estrous induction in female dogs
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Rezende,R.S.; Eurides,D.; Barbosa,C.P.; Lacerda,M.S.; Sampaio,R.L.; Gomes,A.L.
ABSTRACT The aim of this study was to evaluate the effectiveness of a GnRH synthetic analog, as an estrous inducer in female dogs when administered during the anestrous phase, and to evaluate the pregnancy rate achieved through natural copulation. For this purpose, ten female dogs of different breeds were used. The subjects received buserelin by intramuscular injections at a dose of 2,1mcg when female dogs weighed up to 10kg (Group 1) and of 4,2mcg when the dogs weighed above 10kg (Group 2). Of the ten subjects, only three presented estrus after a single injection of buserelin: two dogs from Group 1 and one dog from Group 2 on average 7±1.29 days. The remaining seven dogs were given a second dose of buserelin, equal to the first administration. Of these,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dogs; Reproduction; Hormone; Cytology; Cycle.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000300656

Production of "pejerrey" Odontesthes argentinensis fingerlings: A review of current techniques
Provedor de dados: Biocell
Autores: Sampaio,Luís André.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Reproduction; Larviculture; Atherinopsidae.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100015

Seasonal testicular changes in Dendropsophus minutus Peters, 1872 (Anura, Hylidae)
Provedor de dados: Biocell
Autores: Ferreira,Adelina; Mehanna,Mahmoud.
The reproductive cycle in anurans may be either continuous or discontinuous. These differences may be connected to seasonal climate changes and/or to anthropic activity. Forty adult male individuals of the Dendropsophus minutus species were collected during one year, in the municipality of Chapada dos Guimarães (Mato Grosso, Brazil). The testicles were studied under light and transmission electron microscopy. No variations were observed when the diameter of the seminiferous tubules and the thickness of the interstitial tissue were studied. However, changes in spermatogenesis were conspicuous and indicated that the reproductive cycle of D. minutus in Chapada dos Guimarães is discontinuous and seems related to variations in air temperature and rainfall.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spermatogenesis; Reproduction; Anura; Ultrastructure; Chapada dos Guimarães.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452012000200002

Characterization of the Brain-pituitary axis in pejerrey Odontesthes bonariensis
Provedor de dados: Biocell
Autores: Somoza,G.M.; Miranda,L.A.; Guilgur,L.G.; Strobl-Mazzulla,P.H.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brain; Pituitary; Reproduction; Sex differentiation.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100011

Natural spawning and intensive culture of pejerrey Odontesthes bonariensis juveniles
Provedor de dados: Biocell
Autores: Miranda,L.A.; Berasain,G.E.; Velasco,C.A.M.; Shirojo,Y.; Somoza,G.M.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Pejerrey; Reproduction; Seed production.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100020

Effects of prenatal stress on male offspring sexual maturity
Provedor de dados: Biocell
Autores: Rodríguez,Nancy; Mayer,Nora; Gauna,Héctor F.
Prenatal stimulations have been shown to have long-term effects on at reproductive activity. We evaluated the influence of the prenatal stress on the hypothalamic-pituitary-gonad (HPG) axis in male off­springs from mothers with high number of offsprings per litter (HNL) and low number of offsprings per litter (LNL) after hypothesizing that the number of offsprings per litter may modify the effect of the prenatal stress on the HPG of adult offsprings. Pregnant Wistar rats were used for this study. Immobilization (IMO) stress was used, 30 min, 3 times per week, from the 5th to 21st day of pregnancy. The weight of adrenal and gonads, and the corticosterone (COR), testosterone (TES) and luteinizing hormone (LH) plasmatic levels were analyzed in the male...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rats; Prenatal stress; Reproduction; Corticosterone; Testosterone.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452007000100008

Studies on the reproductive and developmental biology of Cichlasoma dimerus (Percifomes, Cichlidae)
Provedor de dados: Biocell
Autores: Pandolfi,Matías; Cánepa,Maximiliano M.; Meijide,Fernando J.; Alonso,Felipe; Rey Vázquez,Graciela; Maggese,M. Cristina; Vissio,Paula G.
Many characteristics of the South American teleost fish Cichlasoma dimerus (body size, easy breeding, undemanding maintenance) make it amenable to laboratory studies. In the last years, many of the fundamental aspects of its reproductive and developmental biology have been addressed in our laboratory. Rather recently, the immunohistochemical localization of pituitary hormones involved in reproduction and in background color adaptation has been described in both adult and developing individuals, and the role of FSH in ovarian differentiation has been established. These findings have been correlated with mapping of some of their brain-derived controlling hormones. The latter include brain-derived gonadotropins which were shown to be active in vitro in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Early development; Neuroendocrinology; Brain; Pituitary; Teleosts.
Ano: 2009
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452009000100001

Fertility and life expectancy of the predator Supputius cincticeps (Heteroptera: Pentatomidae) exposed to sublethal doses of permethrin
Provedor de dados: Biological Research
Autores: ZANUNCIO,TERESINHA V; ZANUNCIO,JOSÉ C; SERRÃO,JOSÉ E; MEDEIROS,RÔMULO S; PINON,TOBÍAS BM; SEDIYAMA,CAMILLA AZ.
The stinkbug Supputius cincticeps (Stål) (Heteroptera: Pentatomidae) can be found in agricultural and forest ecosystems feeding primarily on larvae of Coleoptera and Lepidoptera, where it can be exposed to insecticide applications. This study therefore aimed to evaluate the reproductive potential of'S. cincticeps after exposition to sublethal doses of permethrin (5.74 x 10-3, 5.74 x 10-2, 5.74 x 10-1, 5.74 and 57.44 ppb) through the use of a fertility life table. The development cycle of this predator was determined in order to calculate its net reproductive rate (R0), the infinitesimal (r m) and finite (&amp;#955;) rates of increase in addition to mean generation time (T). The net reproductive (18.31), infinitesimal (r m) (0.050) and finite (&amp;#955;)...
Tipo: Journal article
Palavras-chave: Asopinae; Biological control; Pyrethroids; Reproduction.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000100005

Reproductive biology of Synallaxis albescens (Aves: Furnariidae) in the cerrado of central Brazil
Provedor de dados: Biota Neotropica
Autores: Marini,Miguel Ângelo; Rodrigues,Sheila Silva; Silveira,Mariana Batista; Greeney,Harold Francis.
Understanding the causes and consequences of variation in reproductive strategies is a central theme in studies of avian life history evolution. This study describes the reproductive biology of Synallaxis albescens (Furnariidae) in the cerrado biome of central Brazil. We monitored 35 nests during the 2003 to 2011 breeding seasons, visiting them every 2-4 days. Synallaxis albescens breeds from mid-September to mid-January, builds a retort-shaped nest, and generally lays three immaculate white eggs. Eggs weighed 1.75 g and measured 19.7 by 14.4 mm. Most nests studied were in open cerrado or shrub grassland at an average height above the ground of 0.3 m, with a preference for Davilla elliptica (Dilleniaceae) shrubs as a nesting substrate. Incubation period...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nests; Eggs; Reproduction; Reproductive success.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400029

Amphibians of an open cerrado fragment in southeastern Brazil
Provedor de dados: Biota Neotropica
Autores: Brasileiro,Cínthia Aguirre; Sawaya,Ricardo J.; Kiefer,Mara C.; Martins,Marcio.
The Cerrado encompasses ca. 2 million km² in Brazil. Most Cerrado areas have been greatly disturbed in the past decades. Only 20% of this biome remain undisturbed, and only 1.2% is protected. Knowledge on the biology and diversity of Cerrado amphibian assemblages is still incipient. Here we present natural history information (habitat use and reproductive activity) of 28 species of frogs from the Estação Ecológica de Itirapina (EEI), and compare the composition of this assemblage with those of other Cerrado areas, other open areas, and a few forest areas throughout Brazil. We demonstrate that the Itirapina assemblage is more similar to those of other open areas than to those of forests, even when the latter are geographically closer. Six species occurred...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Habitat use; Reproduction; Cerrado; Itirapina; São Paulo; Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000300006

Reproduction and demographic trends of Sula Leucogaster at the Moleques do Sul Archipelago, Santa Catarina, Brazil
Provedor de dados: Biota Neotropica
Autores: Branco,Joaquim Olinto; Fracasso,Hélio Augusto Alves; Moraes-Ornellas,Valéria dos Santos.
The Brown Booby, Sula Leucogaster, is one of the most common species of marine birds of the Brazilian coast and, in spite of being a viable subject for long-term studies, in Brazil there are scarce demographic descriptions of this species obtained from observations made in sets of consecutive years. This paper presents breeding information collected in monthly samples taken in the Moleques do Sul Island, Florianópolis, Santa Catarina, during a five year period. The main island was divided into three different study areas, in which adult censuses were conducted, along with counts of number of nests, eggs, chicks and incubating adults. No significant change was found in these numbers during the sampled years and the breeding season extended over the entire...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown Booby; Reproduction; Demographic parameters; Santa Catarina; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400039

Predation on artificial nests in open habitats of central Brazil: effects of time and egg size
Provedor de dados: Biota Neotropica
Autores: Oliveira,Cleyton Washington da Silva; Almeida,Glaudson Pereira; Paiva,Luciana Vieira de; França,Leonardo Fernandes.
The accuracy of artificial nests in representing natural patterns of nest predation has been widely studied in temperate regions and egg size is one of the most tested sources of bias. In the neotropics, experiments with artificial nests usually used larger than natural eggs, despite suggestions in literature that the eggs should be similar to those of the local species. Here, we tested the hypothesis of spatial-temporal variation in predation risk of artificial nests in relation to egg size. We used quail (Coturnix coturnix; large), Chestnut-bellied Seed-finch (Oryzoborus angolensis; small) and plasticine (both sizes) eggs placed in artificial nests. We analyzed daily nest survival using models in the Program MARK. The best-fit model included the effects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird; Cerrado; Neotropical savanna; Nest success; Reproduction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100016

Reproductive biology of Artibeus fimbriatus Gray 1838 (Chiroptera) at the southern limit of its geographic range
Provedor de dados: Biota Neotropica
Autores: Lima,Camila S.; Fabián,Marta Elena.
Abstract Bats of the Phyllostomidae family exhibit different reproductive patterns in Neotropical regions and the strategy adopted depends on the regional climate. Here we studied the reproductive biology of Artibeus fimbriatus at the southern limit of their distribution in Brazil. This region has no rainy season, and the climate is characterized by high temperatures and variable photoperiods. We examined 129 A. fimbriatus females over several months, and used histological procedures where necessary in order to determine whether bats were pregnant. Females exhibited a long reproductive period and were pregnant from June until February. The reproduction events were found to be dependent on the photoperiod, but independent of annual accumulated...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Phyllostomidae; Photoperiod; Reproduction; Seasonal.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400504

Seasonal morphological variation of the vas deferens of scorpion mud turtle (Kinosternon scorpioides)
Provedor de dados: Biota Neotropica
Autores: Viana,Diego Carvalho; Rui,Leandro Almeida; Santos,Amilton Cesar dos; Miglino,Maria Angélica; Assis Neto,Antônio Chaves de; Araujo,Lianne Polliane Fernandes; Oliveira,Antonia Santos; Sousa,Alana Lislea.
This study aimed to characterize the morphology of the vas deferens ofKinosteron scorpioides by macroscopic and microscopic analysis. Were used 20 adult male jurarás collected at regular intervals during the year and divided into four experimental groups in the rainy and dry seasons, being processed for light microscopy, scanning electron microscopy and transmission electron microscopy. Morphometry for tubular and luminal diameters and epithelial height were also performed. On rainy season, vas deferens presented pseudostratified epithelium with cylindrical cells, spermatozoids and milky fluid in the lumen, with cytoplasmic organelles and lipid vesicles. On dry season, epithelium was pseudostratified with cuboid cells, with cellular debris and no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kinosternon; Reproduction; Vas deferens; Morphometry; Ultrastructural.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300114

Population and reproductive traits of a freshwater amphipod (Crustacea, Peracarida, Hyalellidae) from northwest of the state of Rio Grande do Sul, Brazil
Provedor de dados: Biota Neotropica
Autores: Castiglioni,Daniela da Silva; Limberger,Marcio; Castro,Vanessa da Silva; Ubessi,Francieli.
Abstract The study of population and reproductive traits provides information about the ecological structure of natural populations. This study aimed to characterize dynamics and reproductive traits of Hyalella palmeirensis from a natural pond from southern Brazil. The amphipods were sampled monthly (August 2012 to July 2013) by a person with the aid of a hand net for 20 minutes. Ovigerous females and pre-copulatory pairs were individualized in the field. A total of 12,325 individuals were sampled, being 1,421 males, 6,983 females (including 215 ovigerous females) and 3,921 juveniles. Paired and unpaired males were significantly greater in size than females. There was a positive correlation between body size (CL) of paired males and females. Males and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fecundity; Body size; Hyalella palmeirensis; Sex ratio; Reproduction; Recruitment.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000200204

Fire management and the nesting of Athene cunicularia (Aves, Strigidae) in grasslands in central Cerrado, Brazil
Provedor de dados: Biota Neotropica
Autores: Tubelis,Dárius Pukenis; Delitti,Welington Braz Carvalho.
Fire management is a common practice in several reserves in the Cerrado, but its influences on bird reproduction remain unknown. In addition, the nesting biology of the Burrowing Owl (Athene cunicularia) has been studied in numerous environments, but not in tropical grasslands managed by fire. This study examined the effects of fire management on the nesting biology of A. cunicularia in Emas National Park, State of Goias, central Brazilian Cerrado. We compared the number of breeding pairs and their burrows in October and November 2009 at 15 study sites in grasslands managed by fire (firebreaks) and unmanaged grasslands adjacent to and distant from firebreaks. We visited active burrows two-four times and described the burrow entrances and sentinel sites and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Firebreak; Landscape; Burrowing owl; Reproduction; Savanna.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000200012

Mating behavior and female accompaniment in the whiptail lizard Cnemidophorus ocellifer (Squamata, Teiidae) in the Caatinga region of northeastern Brazil
Provedor de dados: Biota Neotropica
Autores: Ribeiro,Leonardo Barros; Gogliath,Melissa; Sales,Raul Fernandes Dantas de; Freire,Eliza Maria Xavier.
We report here a set of observations on mating behavior and female accompaniment by the whiptail lizard Cnemidophorus ocellifer in an area of Caatinga (xerophilous open forests) in the state of Rio Grande do Norte, northeastern Brazil. We observed a stationary male lizard performing repeated vibratory movements of the pelvis and tail base upon the sandy soil. Since that male was in front of a burrow in which a female of the same species was sheltered, we hypothesize that this behavior may be part of a courtship display. We continued the observation and later, when the female emerged from the burrow, the male climbed on her and the copulation occurred. The incident of accompaniment observed was characterized by one male continuously accompanying a female...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Courtship; Mating; Reproduction; Teiids; Caatinga.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400031

Courtship, vocalization, and tadpole description of Epipedobates flavopictus (Anura: Dendrobatidae) in southern Goiás, Brazil
Provedor de dados: Biota Neotropica
Autores: Costa,Ronan Caldeira; Facure,Kátia Gomes; Giaretta,Ariovaldo Antonio.
Epipedobates flavopictus is a diurnal, aposematic dendrobatid with a wide distribution in seasonal wet tropical regions of Brazil. We describe the daily period of vocalization, advertisement call, courtship behavior, and tadpole of E. flavopictus from a previously unknown population in southern Goiás and compare theses features with that of other populations. Studies were carried out in November (2004) and February (2005). We counted the number of calling males and duration of calling bouts in the morning and evening periods. The advertisement call was recorded with a digital recorder. Tadpole description was based on specimens collected in pools. Males called from well-illuminated sites such as rocky fields, rain channels, and borders of riverine forests....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Populational variation; Brazilian Cerrado; Habitat; Pattern of activity; Behavior; Reproduction; Advertisement call.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100006

On the oviposition and egg masses of Conus regius (Neogastropoda: Conidae) from northeastern Brazil
Provedor de dados: Biota Neotropica
Autores: Gonçalves,Pricila Bento; Lima,Silvio Felipe Barbosa; Oliveira,Geraldo Semer Pomponet; Lucena,Rudá Amorim.
Abstract Characteristics of the egg masses of Conus regius Gmelin, 1791 are described and figured for the first time for the coast of Brazil based on a female specimen found in the process of oviposition during the day in the state of Bahia, northeastern Brazil. Two clusters of egg masses were found in the subtidal zone of Itapuã beach attached to rocky substrate in a completely unprotected site. Oviposition likely began at least one day earlier, since the specimen had already affixed an entire egg mass and was ovipositing a second cluster at the time it was found. The egg masses were arranged in short, irregular rows of three to nine closely spaced capsules in parallel and facing the same direction. One egg mass cluster consisted of 34 capsules. Conus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastropoda; Conoidea; Reproduction; Ootheca; Bahia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400204

Fish assemblage structure in a first order stream, southeastern Brazil: longitudinal distribution, seasonality, and microhabitat diversity
Provedor de dados: Biota Neotropica
Autores: Casatti,Lilian.
This study was carried out on a first order stream in the Morro do Diabo State Park, southeastern Brazil. Three equidistant stream stretches - upper, middle, and lower - were chosen for underwater observations and fish collections that were performed in the dry (June and September 2000) and wet seasons (December 2000 and March 2001). Of the 18 fish species documented, 11 were considered resident year round. Phalloceros caudimaculatus, Hypostomus nigromaculatus, Hisonotus francirochai, Trichomycterus diabolus, and Hypostomus ancistroides represented 90% of the collected specimens. The highest richness and abundance occurred during the wet season. In general, the longitudinal addition of species follows the addition of microhabitats. Sexually mature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Upper Rio Paraná; Stream fishes; Conservation; Reproduction; River continuum concept.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000100009

Reproductive ecology and behavior of Thoropa miliaris (Spix, 1824) (Anura, Leptodactylidae, Telmatobiinae)
Provedor de dados: Biota Neotropica
Autores: Giaretta,Ariovaldo Antonio; Facure,Kátia Gomes.
Thoropa species are distributed in southern and southeastern Brazil and have semiterrestrial tadpoles on rocky environments. Herein, we provide further data on reproduction, paternal care and tadpole cannibalism in T. miliaris. Guarding males were tested for disturbances in their egg masses. Egg masses were laid in stripes of wet rock; eggs were in a single layer and were adhered to the rock surface, roots, and to one another. The tadpoles hatched between four and six days. The egg number in two egg masses was 750 and 1190; eggs were gray and the yolk were about 1.7 mm in diameter; 2.3 mm with the jelly capsule. Aggressive interactions were observed between males. Males remained with their egg masses during the night and reacted aggressively to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thoropa miliaris; Parental care; Reproduction; Cannibalism; Atlantic forest; Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032004000200008

EVALUACIÓN PRELIMINAR DE ESPECIES DE PECES ARRECIFALES MARINOS CON POTENCIAL ORNAMENTAL EN EL ÁREA DE SANTA MARTA Y PARQUE NACIONAL NATURAL TAYRONA, CARIBE COLOMBIANO*
Provedor de dados: Boletín de Investigaciones Marinas y Costeras (INVEMAR)
Autores: Polanco F.,Andrea; Acero P.,Arturo; Santos-Acevedo,Marisol; Narváez,Juan Carlos; Navas S.,Gabriel R.; Flórez,Paola.
Veintiuna especies de peces arrecifales frecuentes y abundantes en el área de Santa Marta y Parque Nacional Natural Tayrona (Caribe colombiano) se identificaron como promisorias para el mercado de peces marinos ornamentales. La selección se basó en información secundaria y observaciones en campo y laboratorio, dando prioridad a especies o familias que han sido reproducidas exitosamente en confinamiento y que según las observaciones se adaptan satisfactoriamente al cautiverio, con proyección a su futura reproducción, levantamiento y manutención en confinamiento. Así mismo, para algunas de ellas se obtuvieron datos importantes para su acoplamiento y manutención en acuario. Se proponen a Microspathodon crysurus, Coryphopterus personatus, Elacatinus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peces marinos; Especies ornamentales; Colombia; Mantenimiento en confinamiento; Reproducción; Marine fishes; Ornamental species; Colombia; Maintenance in captivity; Reproduction.
Ano: 2011
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612011000100008

Biology and ecology of lionfish (Pterois volitans) in the Corales de Profundidad Natural National Park, Colombian Caribbean
Provedor de dados: Boletín de Investigaciones Marinas y Costeras (INVEMAR)
Autores: Sanjuan-Muñoz1,Adolfo; Bustos-Montes,Diana; Polo-Silva,Carlos Julio; Henao-Castro,Alejandro; Marrugo,Milena; Delgado-Huertas,Antonio; Vinyoles-Cartanya,Dolors; Acero P.,Arturo.
ABSTRACT Lionfish was studied in the mesophotic environment. 237 specimens were observed, most in the upper mesophotic zone. Males were larger than females and differences between sexes in growth models were found. Sixteen prey items were identified, the most important being the teleost families Acanthuridae and Monacanthidae, and the crustacean Penaeidae. The mean of δ13C was -17.08 ± 0.36 ‰ and δ15N was 8.68 ± 0.46 ‰, with no differences between sexes. Lionfish occupies a less extensive isotopic niche in mesophotic environment than in shallow sectors; there is an isotopic niche overlap between sexes. Likewise, lionfish has specialized trophic habits. All specimens were mature and in females regression phase predominated. In females, condition factor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trophic ecology; Reproduction; Biological invasion; Mesophotic environment; Stable isotopes.
Ano: 2022
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612022000100075

NOTES ON THE ECOLOGY OF THE COLOMBIAN LEAFTOED GECKO (PHYLLODACTYLUS TRANSVERSALIS), ENDEMIC TO MALPELO ISLAND
Provedor de dados: Boletín de Investigaciones Marinas y Costeras (INVEMAR)
Autores: López-Victoria,Mateo; Jurczyk,Matthias; Wolters,Volkmar.
The Colombian leaf-toed gecko (Phyllodactylus transversalis) is the least known reptile species of Malpelo Island (Eastern Tropical Pacific). In the 37 years since its original description, no single study strictly dedicated to this species has been conducted. With the goal of providing information on the ecology and population size of this gecko, data collected during two visits to the island are presented. Behavior and reproduction were studied by following individuals during the night and by searching for hidden individuals and eggs during the day. Population's density and habitat preferences were estimated by classifying the island's surfaces into four types and counting geckos inside those habitats within band transects. General morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phyllodactylus transversalis; Behavior; Reproduction; Habitat preference; Population size.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200006

Analysis of biological parameters of Boophilus microplus Canestrini, 1887 exposed to entomopathogenic nematodes Steinernema carpocapsae Santa Rosa and All strains (Steinernema: Rhabditida)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Freitas-Ribeiro,Gláucia Marques; Furlong,John; Vasconcelos,Viviane Oliveira; Dolinski,Cláudia; Loures-Ribeiro,Alan.
Engorged and partially engorged females of Boophilus microplus were exposed to 600; 3,000; 6,000 and 30,000 infective juveniles of Steinernema carpocapsae Weiser, 1955 Santa Rosa and All strains per dish, under lab conditions. Eggs weight, pre-laying period, laying period, survival period, reproductive efficiency rate, percentage of larval eclosion and lethal concentrations of 50% and 90% (CL50 and CL90) were calculated for engorged females. In the case of partially engorged females, only egg weight, survival period and CL50 and CL90 were calculated. All biological parameters of engorged or partially engorged females were altered by exposition of S. carpocapsae infective juveniles (IJs), Santa Rosa and All strains (p&lt;0.05). The increase in the response...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Boophilus microplus; Steinernema carpocapsae; Entomopathogenic nematodes; Cattle tick; Reproduction.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800007

Effect of the dry matter intake level on the sanguine profile of glucose, insulin, urea, estrogen and progesterone and concentration of IGF-I in the follicular liquid of crossbred heifers
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Rigolon,Luiz Paulo; Prado,Ivanor Nunes do; Cavalieri,Fábio Luiz Bim; Nascimento,Willian Gonçalves do; Copovila,Luiz Carlos; Ramos,Fabíola dos Santos; Moreira,Fernanda Barros.
The aim of this work was to study effect of the dry matter intake level on the concentrations of glucose, insulin, urea, estrogen and progesterone in the blood and the level of IGF-I in the follicular liquid of heifers. Twenty seven crossbred heifers were used, in three treatments: 1.2, 1.6 and 2.6% of the live weight of dry matter intake (DMI) daily. The sanguine concentrations of glucose and estrogen were higher in the animals with 1.6% of DMI and the insulin levels were higher in the animals with 2.6% of DMI. There was an increase in the sanguine levels of urea with the increase of the DMI. There was no effect of the DMI on the progesterone levels in the sanguine plasma collected from the jugular. The progesterone levels in caudal vena were higher in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: FSH; Hormones; Intake; Nutrition; Reproduction; Superovulation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100008

Size at morphological maturity of Ucides cordatus (Linnaeus, 1763) (Brachyura, Ocypodidae) in the Laranjeiras Bay, Southern Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Dalabona,Glaucia; Silva,Jayme de Loyola e; Pinheiro,Marcelo Antonio Amaro.
Morphometry and maturity of Ucides cordatus were analyzed with males and females collected during one year on a monthly basis at Laranjeiras Bay, Paraná State, Brazil. Carapace length, chelipeds propodus length and abdominal width were measured and related to carapace width to verify sexual dimorphism and size at morphological maturity of each sex. Carapace and propodus length of larger and smaller cheliped presented difference between sexes, confirming the use of both as secondary sexual characters. MATURE II program indicated 44mm and 43mm of carapace width to represent the size at sexual maturity of males and females, respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Relative growth; Fishery resource.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100018

Components of fecundity and abortion in a tropical tree, Dahlstedtia pentaphylla (Leguminosae)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Teixeira,Simone de Pádua; Pereira,Rodrigo Augusto Santinelo; Ranga,Neusa Taroda.
Studies were conducted on pollination and patterns of fruit and seed production to assess the potential factors causing high fruit and seed abortion in Dahlstedtia pentaphylla (Leguminosae) through analyses of relationships between flower position in the inflorescence and ovules and seeds within ovaries and fruits, and flower, fruit and seed abortion. No differences were found in pollination and fruit set as a function of inflorescence position. There was no relationship, neither between degenerating ovules and their position within the ovary, nor between developing seed and fruit position. Maternal resource limitation related to fruits and embryos, due to the high cost of fruit production and seed maturation, was one of the factors that led to a high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abortion; Atlantic Rainforest; Dahlstedtia pentaphylla; Leguminosae; Reproduction.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700007

Colonization of the Corumbá Reservoir (Corumbá River, Paraná River Basin, Goiás State, Brazil) by the "lambari" Astyanax altiparanae (Tetragonopterinae; Characidae)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Dias,Rosa Maria; Bailly,Dayani; Antônio,Rosimeire Ribeiro; Suzuki,Harumi Irene; Agostinho,Angelo Antonio.
This work aimed to determine which population features were important to the colonization process of Astyanax altiparanae in the Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught in all months and sites. Higher CPE values were recorded upstream from the reservoir during the filling phase. In this phase, reproductive activity was intense upstream and moderate in the tributaries. However, a fall in abundance of juveniles was observed after the formation of the reservoir. Among the most relevant population features to grant a successful colonization were wide geographic distribution, ability to occupy and spawn in lentic habitats and feeding flexibility.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astyanax altiparanae; Reservoir; Colonization; Reproduction.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300017

Evaluation of the performance of two strains of Nile tilapia (Oreochromis Niloticus) in mixed raising systems
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Neves,Patrícia Ribeiro; Ribeiro,Ricardo Pereira; Vargas,Lauro; Natali,Maria Raquel Marçal; Maehana,Káttia Regina; Marengoni,Nilton Garcia.
The aim of this study was to evaluate the productive performance of two strains of Nile tilapia (Oreochromis niloticus) in mixed raising systems. A total of 3600 fish-larvae species was used, 1800 belonging to Bouaké lineage, and 1800 to Chitralada. The experiment was carried out in three phases; Phase I in an incubator in 18 boxes, in which two treatments (Bouaké and Chitralada) were tested by using nine repetitions; Phases II and III were performed in 18 cement tanks with the same treatments. In phase I, regarding the final weight and gain of weight, Chitralada strain showed the highest final weight values. In phase II, Chitralada showed the highest final weight value when compared with Bouaké, and, considering the gain of weight, Bouaké obtained the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Performance; Strains; Oreochromis niloticus; Reproduction; Nile tilapia.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300012

Reproductive biology of the dusky grouper Epinephelus marginatus (Lowe, 1834)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Andrade,Áthila Bertoncini; Machado,Leonardo Francisco; Hostim-Silva,Maurício; Barreiros,João Pedro.
Investigations were carried out about the reproductive biology of the dusky grouper, Epinephelus marginatus (Lowe, 1834) a serranid protogynous hermaphrodite fish inhabitant of rocky bottoms from shallow waters up to 200 m depth. Samples were caught in the islands that form Arvoredo Biological Marine Reserve (SC - Brazil) and the coastal islands near Florianópolis region from March 1998 to May 2000. Data from samples of juvenile groupers on intertidal pools were used to link their occurrence in the pools to the post-spawning season. To describe the histological changes on gonads along the reproductive cycle and to establish maturation scales, 109 groupers were histologically tested for sex determination. First maturation size was determined for females...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Dusky Grouper; Epinephelus marginatus; Santa Catarina; Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300009

Reproductive Strategies of Plagioscion squamosissimus Heckel, 1840 (Osteichthyes Sciaenidae) in the Itaipu Reservoir, Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Carnelós,Regina Cintia; Benedito-Cecilio,Evanilde.
Plagioscion squamosissimus is a dominant species in the Itaipu reservoir and has a significant role in the regional economy. The aim of the present research was the investigation of the curvina's reproductive strategies during the first years of the Itaipu reservoir (November 1983 to October 1989). Collections were undertaken from eleven sampling sites in the reservoir area, left bank tributaries, Paraná River and its tributaries. Species begin the reproduction in the area of influence of the Itaipu reservoir only in 1986. Size of early maturation, local and period of spawning showed gradual variations, with a broadening trend of this activity in the area, and thus guaranteeing success of the species. Mean size of early sexual maturation for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Itaipu reservoir; Plagioscion squamosissimus; Impact.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300010

Testis and vas deferens morphology of the red-clawed mangrove tree crab (Goniopsis cruentata) (Latreille, 1803)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Garcia,Tatiane Martins; Silva,José Roberto Feitosa.
The present study describes the structure of the testes and vas deferens of the red-clawed mangrove tree crab, Goniopsis cruentata. Testes and vas deferens were fixed with cold Bouin's solution and submitted to histological routine examinations. Light microscopy showed the testis to be divided into three regions: anterior, containing the germinal zone; intermediary, including the collecting duct; and posterior. The vas deferens, which was continuous with the testes, could be divided into two regions: one corresponding to the expansions and another lined by cubical epithelium, collagenous fibers and a circular layer of muscle cells and containing the androgenic gland. Spermatophores were observed in both vas deferens regions suggesting that they...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Goniopsis cruentata; Reproduction; Spermatophore; Testis; Vas deferens.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300019

Biology of Chirocentrodon bleekerianus (Poey, 1867) (Clupeiformes: Pristigasteridae) in a continental shelf region of southern Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Corrêa,Carlos Eduardo; Chaves,Paulo de Tarso; Guimarães,Paulo Ricardo Bittencourt.
This study provides information on the biology of C. bleekerianus from Paraná State coast, Brazil, assembling data about its abundance, size structure, diet and reproduction. Monthly collections were accomplished in 1999 and 2000 in the internal continental shelf, with trawl net. The catch-per-unit-effort did not vary significantly among the seasons. In the summer, the individuals were larger, followed by autumn, spring and winter. C. bleekerianus was predominantly planktivorous and the most frequent items in its diet were copepods followed by diatomaceous algae. Seasonal variation in the frequency values of the gonad maturation stages, gonadossomatic index and gonadal condition factor indicated that the reproductive period encompassed spring and summer....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Brazil; Chirocentrodon; Clupeiforms; Feeding; Reproduction.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300013

Morphology of female reproductive tract of the predator Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) fed on different diets
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Lemos,Walkymário de Paulo; Ramalho,Francisco de Souza; Serrão,José Eduardo; Zanuncio,José Cola.
The morphology of the reproductive tract of Podisus nigrispinus (Dallas) females fed with Alabama argillacea (Hübner) larvae, artificial diet, Tenebrio molitor L. larvae or Musca domestica L. larvae were studied. The reproductive tract of females of this species presented yellow coloration and independent of the diet, each ovary had seven ovarioles joined through terminal filaments and forming a bunch shape structure. The histological data revealed that the ovary of P. nigrispinus was of meroistic telotrophic type, with each individual ovariole divided in a terminal filament, a tropharium (trophic chamber), a vitellarium, and a pedicel. The prey type affected the development and morphometry of these structures. Females of P. nigrispinus fed with 3rd or 5th...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Morphology; Ovaries; Predator; Reproduction.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100017

Comparison between four and seven-day Ceriodaphnia dubia survival and reproduction test protocols using oil refinery effluent samples
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Oliveira-Filho,Eduardo Cyrino; Da-Matta,Anndressa Camillo; Cabral,Lucianna Lopes; Veiga,Letícia Falcão; Paumgartten,Francisco José Roma.
The aim of this study was to compare the 7-day Ceriodaphnia dubia survival and reproduction test with a 4 day test to evaluate the toxicity of oil refinery effluents. Both shown identical NOECs with three of 6 tested samples. With one of the tested samples, the 4-day NOEC was one tested-concentration lower, and with the remaining two samples, it was one tested-concentration higher than those obtained using the 7-day protocol. Then results suggested that 4 and 7-day protocols were comparable to detect toxic effects.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic toxicology; Water pollution; Ecotoxicology; Oil refinery effluents; Reproduction; Aquatic chronic tests.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100017

Recent developments on broodstock maturation and reproduction of Farfantepenaeus paulensis
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Peixoto,Sílvio; Cavalli,Ronaldo Olivera; Wasielesky,Wilson.
This paper describes the latest developments on maturation and reproduction of Farfantepenaeus paulensis in captivity, with special reference to the studies conducted during the last decade at the Laboratory of Mariculture, University of Rio Grande in southern Brazil, aiming to improve the future outlook for a sustainable nauplii production of F. paulensis. Particular emphasis has been given on the reproductive cycle, ovarian maturation, maturation and spawning systems, artificial insemination, broodstock reproductive performance and maintenance of captive broodstock.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Maturation; Farfantepenaeus paulensis; Penaeid.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800016

The Effect of Water Parameters and Dissolved Minerals on the Hematological Parameters of during Breeding Period Catfish (Silurus glanis)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Küçükgül,Azime; Yüngül,Mücahit; Kahraman,Zuhal; Dörücü,Mustafa.
Abstract In this study, the blood parameters of catfish (Silurus glanis Linnaeus, 1758) inhabiting Çelik Lake (Adıyaman, Turkey) were investigated. The study was conducted between April 2013 and October 2013. After obtaining a blood sample from each catfish has been hematologically analyzed. Then, the water temperature, dissolved oxygen, pH, calcium, magnesium and nitrate values were determined at before breeding (April), breeding period (June - July) and after breeding of fish (October) and the impacts of these data on hematological values were investigated. According to this study, it was observed that the hematological values obtained at before breeding period, breeding and after the breeding period were affected by the water quality parameters.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Çelik Lake; Hematological values; Reproduction; Water quality parameters.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100427

Description of the ootheca of Turbinella laevigata (Mollusca, Gastropoda)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Matthews-Cascon,Helena; Rocha-Barreira,Cristina de Almeida; Meirelles,Carlos; Bigatti,Gregorio; Penchaszadeh,Pablo.
Turbinella laevigata is found since the intertidal zone up to 40 m depth, being endemic of Brazil where it occurs from the state of Amapá to the state of Espirito Santo. The objective of this study was to describe the ootheca of this species. Fifteen samples collected in the Olho d'Água Beach, City of Icapuí and Fleixeiras Beach, City of Trairí, both in Ceará State, Northeast Brazil, were studied. The spawns were composed by 15 +/- 1.4 SD capsules and had 63 +/- 6.4 SD mm of length with 41 +/- 2.5 SD mm of width. They had a convex and a concave surface, and plaited edges that drew out until the basal membrane, to which they joined forming a medial ridge. This species apparently produced a high amount of nurse eggs. The early juveniles measured 6.4 +/- 0.7...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Mollusca; Turbinellidae.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200013

Leptospirosis on animal reproduction: IV. Serological findings in mares from six farms in Rio de Janeiro, Brazil (1993-1996)
Provedor de dados: Brazilian Jounarl of Veterinary
Autores: LILENBAUM,Walter.
From February 1993 until October 1996, 547 blood samples were collected from mares with reproductive problems in six farms of the state of Rio de Janeiro, Brazil, and tested by the microscopic agglutination test (MAT) with live antigens for antibodies to seven leptospira serovars. A total of 235 positive reactions (42.96%) at a minimum serum dilution of 1:100 were observed against one or more serovars, which in comparison to other studies developed in Brazil, may be considered as a high prevalence. On mares with anti-leptospiral antibodies, the predominant serovar was icterohaemorrhagiae, reactive on 102 (43.40%) samples, followed by 64 (27.23%) reactions against bratislava, and 34 (14.47%) against pomona. The high prevalence of antibodies to serovar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptospirosis; Abortion; Reproduction; Horses.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000200002

Plasma urea levels on reproductive parameters of wool-less rams (Ovis aries, LINNAEUS, 1758)
Provedor de dados: Brazilian Jounarl of Veterinary
Autores: CORTADA,Carmen Neusa Martins; LUCCI,Carlos de Sousa; GONZALEZ,Rodrigo Alonso Forero; VALENTIN,Renato; MATTOS,Carla Balzano de.
The effect of increased plasma urea levels on reproductive parameters of Santa Ines Brazilian breed rams (Ovis aries) was determined during two phases, 60 days in length each. During the first phase, 18 animals divided into three blocks according to scrotal circumference were submitted to the following treatments: diet A1- with nitrogen levels according to ARC (1980); diet B1 - nitrogen levels 133% higher than A1; and diet C1 - nitrogen levels 166% higher than A1. During the second phase, 12 animals divided into two groups received diet A2- with nitrogen levels according to ARC (1980), and diet B2 - nitrogen levels 200% higher than diet A2, respectively. The increase in protein equivalents was obtained by adding 20, 40 and 60 g of feed grade urea to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urea; Semen; Reproduction; Rams; Feed Ration.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000600007

Serial clinical, colpo-cytological and endocrinological evaluations of Cerdocyon thous bitches from the Rio de Janeiro zoo
Provedor de dados: Brazilian Jounarl of Veterinary
Autores: Monteiro,Rafael Veríssimo; Santos,Márcio Ricardo Costa dos; Vianna,Eduardo Borges; Araújo,Tatiana Cardoso Soares de; Verona,Carlos Eduardo; Fedullo,Luís Paulo Luzes.
Serial clinical, colpo-cytological and endocrinological examinations of two five-year-old females of the crab-eating dog (Cerdocyon thous), from the RIOZOO Foundation in the State of Rio de Janeiro - Brazil, were carried out over a 10-month period. Clinically healthy animals were kept in sand substratum enclosures, located 500m apart from each other. They were each housed with two males. The colpo-cytological technique employed for Cerdocyon thous used methods similar to those developed for domestic bitches. Unlike domestic dogs, blood cells were absent in all phases of the estrus cycle, including the pro-estrus phase. Differentiation of each type of vaginal cells during the estrus cycle phases in this species follows the same patterns shown by domestic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canidae; Cytology; Endocrinology; Reproduction.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962002000200007

The reproductive strategy of Leporinus friderici (Characiformes, Anostomidae) in the Paraná River basin: the effect of reservoirs
Provedor de dados: Brazilian Journal of Biology
Autores: LOPES,C. de A.; BENEDITO-CECILIO,E.; AGOSTINHO,A. A.
The reproductive strategy of a species depends upon the interaction between intrinsic and extrinsic factors. Examining the population of Leporinus friderici in two reservoirs of the Upper Paraná River basin in reference to first gonadal maturation and breeding season and sites, the present investigation tested whether the environment formed by damming promoted spatial and temporal changes in the reproductive strategy of this species. Analyses of sex ratios showed that females significantly predominated in Itaipu, while in Corumbá the sexes were about equal with a slight predominance of males. Size-associated sexual dimorphism was observed, that is females dominated the longer length categories, and males the shorter. The minimum size at which L. friderici...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paraná River basin; Leporinus friderici; Reproduction; Reservoir.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000200009

Changes in the thyroid gland during the reproductive cycle of the male vespertilionid bat, Scotophilus heathi
Provedor de dados: Brazilian Journal of Biology
Autores: KRISHNA,A.; SINGH,K.
The aim of present study was to compare the changes in thyroid gland with the reproductive cycle of S. heathi. Thyroid showed marked seasonal variation in weight, quantity of colloid and follicular epithelial height, suggesting the thyroid gland to be inactive during quiescence and winter dormancy and active during the time of recrudescence and breeding similarly to the testicular cycle. Plasma thyroxin (T4) concentration showed a significant seasonal change with high concentration during breeding and post-breeding and low concentration during quiescence. However, the T4 concentration increased from breeding to post-breeding phase, when the testes weight was declining. It is suggested that in S. heathi the positive correlation between thyroid and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thyroid; Thyroxin; Testes; Bat; Body weight; Reproduction.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081998000400018

A note on the reproduction of Geochelone carbonaria and G. denticulata (Testudines, Testudinidae)
Provedor de dados: Brazilian Journal of Biology
Autores: VANZOLINI,P. E.
On the occasion of having collected three gravid Geochelone carbonaria in the Bolivian Chaco, data are given on oviducal eggs, as well as on five shells of eggs of the same species in the Museum collection. A review of the literature on the reproduction of G. carbonaria and of its sibling G. denticulata is presented, with an elementary statistical treatment of the data on number of clutches per reproductive season, interval between clutches, clutch size, egg shape and volume.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testudines; Reproduction.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400009

Structural indexes and sexual maturity of tambaqui Colossoma macropomum (cuvier, 1818) (Characiformes: Characidae) in Central Amazon, Brazil
Provedor de dados: Brazilian Journal of Biology
Autores: VILLACORTA-CORREA,M. A.; SAINT-PAUL,U.
Length, weight, structural index and sexual maturity in tambaqui Colossoma macropomum were analysed. 449 specimens were obtained from the commercial fishing fleet arriving at Manaus Harbour from the floodplain areas from May 1992 to July 1993. The objective of this study is to describe changes in structural index during one hidrological cycle and to interpret them according to the water level fluctuations and to also determine the time, reproductive period and length in sexual maturity. Sex ratio in tambaqui was 1:1 however, the length of females was significantly longer than males'. Length/weight relationship was described by the expression: Pt = 0.00058*Cp2.9039. b value was significantly different from 3 which meant an alometric growth. Lower condition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colossoma macropomum; Floodplains; Structural index; Reproduction; Sexual maturity.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400013

Reproductive mechanisms in a Nasutitermes species (Isoptera: Termitidae)
Provedor de dados: Brazilian Journal of Biology
Autores: BUSCHINI,M. L. T.; LEONARDO,A. M. C.
The number of reproductive individuals present in colonies of Nasutitermes sp. was analysed, and its possible reproductive strategy discussed. Twenty-four nests were collected and opened, and a single queen and king were found in 17 of them. In the other 7 nests, no queen or king were neither found, nor any other reproductive individual. All quee ns were weighed, and the number of eggs laid by them was counted. No relationship between the volume of the nests and the weight of their respective queens was found, but the number of eggs laid by the queens during an hour was positively correlated to their weight .
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nasutitermes; Isoptera; Termitidae; Reproduction; Polygyny.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400010

Social condition affects hormone secretion and exploratory behavior in rats
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Genaro,G.; Schmidek,W.R.; Franci,C.R.
Studies of behavior, endocrinology and physiology have described experiments in which animals housed in groups or in isolation were normally tested individually. The isolation of the animal from its group for testing is perhaps the most common situation used today in experimental procedures, i.e., there is no consideration of the acute stress which occurs when the animal is submitted to a situation different from that it is normally accustomed to, i.e., group living. In the present study, we used 90 male 120-day-old rats (Rattus norvegicus) divided into 5 groups of 18 animals, which were housed 3 per cage, in a total of 6 cages. The animals were tested individually or with their groups for exploratory behavior. Hormones were determined by radioimmunoassay...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isolation; Group; Stress; Reproduction; ACTH; Luteinizing hormone; Corticosterone; Prolactin.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600008

Comparison of serum hormone levels of captive and free-living maned wolves Chrysocyon brachyurus
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Maia,O.B.; Jácomo,A.T.A.; Bringel,B.A.; Kashivakura,C.K.; Oliveira,C.A.; Teodoro,L.O.F.; Silveira,L.; Teixeira da Costa,M.E.L.; Malta,M.C.C.; Furtado,M.M.; Torres,N.M.; Mattos,P.S.R.; Viau,.P; Lima,T.F.G.; Morato,R.G.
Serum hormone levels were compared between captive and free-living maned wolves and seasonal variations of sex hormones were studied. Blood samples were collected from 16 male and 26 female adult animals from Brazilian zoos, and from 30 male and 24 female free-living adults to determine serum progesterone and testosterone by radioimmunoassay. Serum testosterone concentrations varied (P &lt; 0.05) across seasons for 16 captive males, being higher in autumn (2184.7 ± 355.1 pg/mL) than in summer (1080.7 ± 205.4 pg/mL), winter (1270.1 ± 276.6 pg/mL) and spring (963.9 ± 248.1 pg/mL), although they did not differ between summer, winter and spring. Testosterone concentration of 30 free-living males differed (P &lt; 0.05) between autumn (824.1 ± 512.2 pg/mL),...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Maned wolf Chrysocyon brachyurus; Progesterone; Testosterone; Radioimmunoassay; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200015

Quantification of fecal estradiol and progesterone metabolites in Syrian hamsters (Mesocricetus auratus)
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Chelini,M.O.M.; Souza,N.L.; Rocha,A.M.; Felippe,E.C.G.; Oliveira,C.A.
Alternative methods to the utilization of laboratory animal blood and its by-products are particularly attractive, especially regarding hamsters due to their small size and difficulties in obtaining serial blood samples. Steroid hormone metabolite quantification in feces, widely used in studies of free-ranging or intractable animals, is a non-invasive, non-stressor, economical, and animal saving technique which allows longitudinal studies by permitting frequent sampling of the same individual. The present study was undertaken to determine the suitability of this method for laboratory animals. Estradiol and progesterone metabolites were quantified by radioimmunoassay in feces of intact, sexually mature female Syrian hamsters during the estrous cycle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endocrinology; Fecal steroids; Syrian hamster; Reproduction; Radioimmunoassay; Estrogen.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100021

Annual changes in serum calcium and inorganic phosphate levels and correlation with gonadal status of a freshwater murrel, Channa punctatus (Bloch)
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Srivastav,S.K.; Srivastav,A.K.
Adult Channa punctatus murrels of both sexes (60-80 g) were collected locally from Ramgarh Lake during the second week of every month (10 individuals of each sex/month) throughout the year. Blood samples were collected and analyzed for serum calcium and phosphate levels by the methods of Trinder (1960) and Fiske and Subbarow (1925), respectively. Gonads were fixed to judge the state of maturation of the fish. Males exhibited no change in serum calcium levels throughout the year in correlation with testicular maturation. However, serum phosphate levels exhibited a rise in correlation with the increased gonadosomatic index. Females showed marked seasonal changes in serum calcium and phosphate levels which were associated with ovarian maturation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Inorganic phosphate; Reproduction; Teleost; Vitellogenesis.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000800006

Effects of serotonin and fluoxetine on blood glucose regulation in two decapod species
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Santos,E.A.; Keller,R.; Rodriguez,E.; Lopez,L.
One of the best known crustacean hormones is the crustacean hyperglycemic hormone (CHH). However, the mechanisms involved in hormone release in these animals are poorly understood, and thus constitute the central objective of the present study. Different groups of crustaceans belonging to diverse taxa (Chasmagnathus granulata, a grapsid crab and Orconectes limosus, an astacid) were injected with serotonin, fluoxetine, or a mixture of both, and glycemic values (C. granulata and O. limosus) and CHH levels (O. limosus) were determined after 2 h in either submerged animals or animals exposed to atmospheric air. Both serotonin and fluoxetine caused significant hyperglycemia (P&lt;0.05) after injection into the blood sinus of the two species, an effect enhanced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacean; Reproduction; Endocrinology; CHH; Crab; Crayfish.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100009

Reproductive ability of pubertal male and female rats
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Zemunik,T.; Peruzovic,M.; Capkun,V.; Zekan,L.; Tomic,S.; Milkovic,K.
Ten Fisher rats 50 to 55 days of age made up the pubertal group, and ten rats 90 to 95 days of age served as the controls. The testicular and epididymal weights and volumes of the pubertal males were lower than those of the controls (P&lt;0.001). There was also a difference in relative epididymal weight (P&lt;0.001). The sperm of pubertal males was morphologically abnormal in 58.2% of cases, as opposed to only 3.8% in the controls (P&lt;0.001). The mean number of spermatozoa in the control group was 11.9 × 10(6)/ml and their viability was 99.6%, while these values could not be determined for pubertal rats. Serum testosterone was higher in the pubertal animals than in the controls (2.52 ± 1.46 vs 0.92 ± 0.34 nM, P&lt;0.01). The ovaries of control females...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Puberty; Reproduction; Gonads; Sex hormones; Pregnancy.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000700007

Environmental color affects Nile tilapia reproduction
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Volpato,G.L.; Duarte,C.R.A.; Luchiari,A.C.
We investigated the effects of environmental color on the reproductive behavior of Nile tilapia, Oreochromis niloticus. Two environmental colors were tested by covering the aquarium (60 x 60 x 40 cm) with white (12 groups) or blue (13 groups) cellophane and observing reproductive behavior in groups of 2 males (10.27 ± 0.45 cm) and 3 females (10.78 ± 0.45 cm) each. After assignment to the respective environmental color (similar luminosity = 100 to 120 Lux), the animals were observed until reproduction (identified by eggs in the female's mouth) or up to 10 days after the first nest building. Photoperiod was from 6:00 h to 18:00 h every day. Food was offered in excess once a day and water quality was similar among aquaria. Daily observations were made at...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Reproduction; Environmental color; Fish; Nile tilapia; Oreochromis niloticus.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400004

Pre- and postnatal evaluation of offspring rats exposed to Origanum vulgare essential oil during mating, gestation and lactation
Provedor de dados: Ciência Rural
Autores: Hollenbach,Clarissa Boemler; Stedile,Rafael; Mello,Fabíola Peixoto da Silva; Bing,Rafaela Scheer; Rosa,Patrícia Pisoni da; Rodrigues,Maria Regina Alves; Mello,Fernanda Bastos de; Zanette,Régis Adriel; Mello,João Roberto Braga de.
ABSTRACT: Despite the increasing use of oregano ( Origanum vulgare L.) essential oil for therapeutic purposes, pre- and postnatal development of animals offspring exposed to this oil has not yet been evaluated. In line with previous concerns of genotoxicity, in this study adult rats were exposed to different doses of oregano essential oil (3, 9 and 27% vol/vol) during pre-mating, mating, gestation and lactation. Prenatal screening included fetal development and uterine inspection, where the reproductive rate of females such as breeding, pregnancy, delivery, viability and post-implantation loss rate were measured. Postnatal evaluation of rat offspring included motor development, neuroendocrine and behavioral assessment. Body weight of rat dams and signs of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oregano; Reproductive toxicity; Progeny; Reproduction; Rats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100552

Serum biochemistry profile determination for wild loggerhead sea turtles nesting in Campos dos Goytacazes, Rio de Janeiro, Brazil
Provedor de dados: Ciência Rural
Autores: Goldberg,Daphne Wrobel; Wanderlinde,Juçara; Freire,Isabel Maria Alexandre; Silva,Luiz Cesar Pereira da; Almosny,Nadia Regina Pereira.
Sea turtles are threatened to the point of extinction. The major goal of rehabilitating sick individuals is to eventually reintroduce them back into their habitat. In this way, they contribute to species preservation, as well as maintaining equilibrium of the ecosystems. Biochemical analysis is a commonly used test to detect illness and evaluate the general health of the animals. However, the data in the literature on sea turtles are scarce and the majority of studies used small sample sizes, being the majority of animals in captivity. The aim of the present study is to establish baseline biochemical profile values for free-ranging, nesting, female loggerhead turtles (Caretta caretta). The baseline values can then be used for comparison in the overall...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caretta caretta; Reproduction; Sea turtle; Serum biochemistry.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000100023

Identification of molecular markers on bovine chromosome 18 associated to calving interval in a Brangus-Ibagé cattle herd
Provedor de dados: Ciência Rural
Autores: Weimer,Tania de Azevedo; Steigleder,Clara Sabina; Machado,Márcia Silveira; Almeida,Sabrina Esteves Matos; Oliveira,João Francisco Coelho; Moraes,José Carlos Ferrugem; Henkes,Luis Ernani.
In the detection phase of a bovine marker assisted selection program, this paper investigated the genetic variability of three microsatellites on the chromosome 18 (BTA 18). The possible associations between genotypes or alleles of these markers versus weight at first calving and a lifetime calving interval (as indicators of reproductive performance) were evaluated in a beef cattle herd (5/8 Aberdeen Angus x 3/8 Nelore). Eleven alleles were detected in TGLA227 and ILSTS002 and three in BMS3004, the most frequent being TGLA227*79, ILSTS002*133, ILSTS002*135 and BMS3004*129. Polymorphic information content ranged from 0.41 to 0.84, while heterozygosity ranged from 49% to 86%, with an average value of 77%. The association analyses performed between genotype...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microsatellites; Reproduction; Marker assisted selection; BTA 18.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000500050

Insulin effect during a Heatsynch protocol in dairy cows
Provedor de dados: Ciência Rural
Autores: Maffi,Andressa Stein; Brauner,Cássio Cassal; Mielke,Lais Fernanda; Lima,Marcio Erpen; Xavier,Eduardo Gularte; Pino,Francisco Augusto Burkert Del; Corrêa,Marcio Nunes.
ABSTRACT:  The objective of this study was to evaluate the effect of exogenous insulin administration on follicular growth, estrus presentation and conception rate during a protocol of ovulation synchronization. Dairy cows were subjected to the Heatsynch protocol, with the insertion of an intravaginal device containing 1.9 g of progesterone (CIDR) and an intramuscular injection containing 2.5 mg of GnRH on day 0. On day 7, the CIDR was removed and subjects were given 12.5 mg of dinoprost. Also on day 7, Insulin Group (IG, n = 21) animals received a subcutaneous injection containing 0.25 IU / kg of recombinant human insulin and the control group (CG, n = 25) received a 0.9% NaCl injection. On day 8, an injection of 0.5 mg of estradiol cypionate was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy cow; Insulin; Ovarian follicle; Reproduction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000800650

ENVIRONMENTAL AND GENETIC EFFECTS ON PRODUCTION TRAITS OF EWES ORIGINALLY FROM DISTINCT ENVIRONMENTS
Provedor de dados: Ciência Rural
Autores: Oliveira,Nelson Manzoni de; Moraes,José Carlos Ferrugem.
Wool production and reproductive performance components of similar genotypes, brought from distinct production areas, were evaluated during five years trial at similar environments, such as, joining season and stocking rate on winter improved pasture. The least squares means revealed that the origin (breed) effect concentrated upon the Corriedale ewes wool production, whereas in Romney females it affected the reproductive performance. In the abscence of interaction between origin (breed) and year for most variables, it was assumed that the farm management procedures and/or selection criteria applied on hoggets were determinant of the subsequent lifetime production within each genotype examined. Expecting a better reproductive performance in Romneys, mainly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sheep; Breed; Origin; Environment; Wool; Reproduction.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300019

POST WEANING FEEDING MANAGEMENT AND PERFORMANCE OF MERINO EWES GRAZING ON NATURAL AND IMPROVED PASTURES AT MATING SEASON
Provedor de dados: Ciência Rural
Autores: Bianchi,Gianni; Burgueño,Juan; Fernández Abella,Daniel; Garibotto,Gustavo; Cáceres,Rosario; Cesar,Rómulo; Jones,Guillermo.
In the uruguayan Basalt region, the reproductive performance of 300 Merino ewes and the effect of 3 post-weaning feeding managements (PWFM: I: 1.2 cm height of available forage and 16 ewes/ha; II: 2.03 cm height of available forage and 5 ewes/ha; III: 2.5cm height of available forage and 1 ewe/ha) as well as 2 feeding levels before and during the breeding season (FLM: native pastures: green DM/ha: 883kg, CP: 114g/kg DM, NDF: 781g/kg DM and improved pastures: DM /ha: 1270kg, CP: 194g/kg DM, NDF: 598g/kg DM) were studied with a factorial arrangement of treatments. The PWFM extended for 70 days, ewes were mated in the period from 13/4/96 to 13/5/96 and FLM were applied for 30 days, starting 15 days before beginning of breeding. There were not differences on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body condition; Mating; Reproduction.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782001000100017

Progesterone production in superovulated holstein heifers and in crossbred recipient of embryo supplemented with betacarotene and tocopherol
Provedor de dados: Ciência e Agrotecnologia
Autores: Sales,José Nélio de Sousa; Dias,Lilian Mara Kirsch; Franci,Celso Rodrigues; Rocha,Alexandro Aluísio; Cardoso,Guilherme Gastão; Souza,José Camisão de.
Two experiments were conducted to evaluate the effect of the intramuscular injection of betacarotene associated to tocopherol on the plasma concentration progesterone of superovulated Holstein heifers (experiment 1) and in crossbred (Bos taurus x Bos indicus) heifers submitted to fixed-time embryo transfer (FTET, experiment 2). In experiment 1, after estrus synchronization and superovulation animals were inseminated 12 and 24 hours after estrus onset and embryos flushed 7 days later. Heifers were allocated randomly to one of three treatments: Control; T800 (800 mg of betacarotene plus 500 mg of tocopherol) and T1200 (1,200 mg of betacarotene plus 750 mg of tocopherol). The treatments were given on the day of ear implant placement and repeated on the first...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin; Reproduction; Cattle; Embryo transfer.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000400023