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	Provedor de dados 103 (2) 104 (1) 5 (1) 52 (1) 72 (1) 76 (1) 83 (1) Mais... Autor Albieri,Rafael J. (1) Ancalaf,Andrea (1) Andrade-Tubino,Magda Fernandes de (1) Araújo,Francisco G. (1) Azevedo,Marco A. (1) Barra,Ricardo (1) Bastos,Ana Luiza (1) Batlouni,Sergio Ricardo (1) Bernardes,Roberto Ávila (1) Brandão,Claudia Angelica da Silva (1) Buchet, Vincent (1) Caramaschi,Érica Pellegrini (1) Chiang,Gustavo (1) Costa,Marcus Rodrigues da (1) Dias,June Ferraz (1) Fauvel, Christian (1) Gardes, Lionel (1) Gavilán,Juan F (1) Lampert,Vinicius R. (1) Martins,Raquel Rennó Mascarenhas (1) Mais... Palavra-chave Oocyte development (8) Fecundity (2) Reproduction (2) Analyse multivariée (1) Balistes capriscus (1) Cichlid (1) Développement ovocytaire (1) Egg quality (1) Fish culture (1) Fish reproduction (1) Grey triggerfish (1) Hemiodontid (1) Hepatosomatic index (1) Histology (1) Induced breeding (1) Induction de la ponte (1) LH-RH analogues (1) Multiple spawning reproductive strategy (1) Multiple spawns (1) Multivariate analysis (1) Mais... Tipo do documento Info:eu-repo/semantics/article (6) Journal article (1) Text (1) Ano 2021 (1) 2013 (1) 2012 (1) 2011 (1) 2010 (1) 2003 (1) 2000 (2) Mais... País Brazil (6) Chile (1) France (1) Idioma Inglês (7) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 8 Primeira ... 1 ... Última Ovary maturation stages and oocyte features in three species of the neotropical fish Hemiodus (Müller, 1842) 52 Brandão,Claudia Angelica da Silva; Valentim,Maria de Fátima Moraes; Caramaschi,Érica Pellegrini. Macro- and microscopic ovarian features of Hemiodus microlepis, H. ternetzi and H. unimaculatus were analyzed. Based on these features we proposed an ovarian maturation scale. The nine stages of the preliminary macroscopic fieldwork scale were reduced to five after microscopic analysis of ovaries. The microscopic analysis indicated a group-synchronous oocyte development common to the three species that were characterized as iteroparous synchronous spawners with a total spawning type. The remarkable thickness of the zona radiata layer and the large size of vitellogenic oocytes of Hemiodus ternetzi distinguished this species from the others. Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemiodontid; Oocyte development; Zona radiata; Fish reproduction; Tocantins River. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300015 Seasonal changes in oocyte development, growth and population size distribution of Percilia gillissiand Trichomycterus areolatus in the Itata basin, Chile 72 Chiang,Gustavo; Munkittrick,Kelly R; McMaster,Mark E; Tucca,Felipe; Saavedra,M. Fernanda; Ancalaf,Andrea; Gavilán,Juan F; Unzueta,Luis; Barra,Ricardo. There is scarce basic biological data on native freshwater fish species from Chile and next to zero on growth, gonad development and reproduction, which are critical for the purposes of the conservation of their natural populations. Seasonal analysis of sub-individual (oocyte development) and population (length frequency, growth rates) endpoints in Trichomycterus areolatus and Percilia gillissi were evaluated from February 2007 to January 2008. Oocyte development has a marked seasonality for P. gillissi, with mature eggs in October and declining frequency of mature oocytes into January. For T. areolatus we found some mature eggs in July, with highest number of mature eggs in October, coincident with previous data on maximum gonad size. Both species showed... Tipo: Journal article Palavras-chave: Seasonal cycles; Native fish Chile; Oocyte development; Multiple spawning reproductive strategy; Population size-structure. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382012000300006 Reproductive traits of Gymnogeophagus labiatus (Teleostei, Cichlidae), in an upper stretch of Sinos river, Caraá, Brazil 76 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 Induced spawning of red drum, Sciaenops ocellatus: use of multivariate and univariate analysis methods in the search for side effects of LH-RHa treatments and ovarian development state upon spawn quality 5 Gardes, Lionel; Villanove, Philippe; Buchet, Vincent; Fauvel, Christian. The present work examines the usefulness of the combination of multivariate analyses and further one-way analysis of variance in the search for links between causes and effects in heterologous stimulation of spawning in fish. Stimulations with both 20 and 50 mu g . kg(-1) doses of [D Trp(6)] luteinizing hormone-releasing hormone analogue (LH-RHa) were effective in inducing and synchronizing spawning of red drum, Sciaenops ocellatus. Oocyte development monitoring using ovarian biopsy allowed treatment injections at different stages of maturation. The influence at stimulation time of female oocyte development state upon further development was shown. An interesting potential of second stimulation, leading to high quality spawns, was established and factors... Tipo: Text Palavras-chave: Pisciculture; Induction de la ponte; LH-RH analogues; Analyse multivariée; Qualité des oeufs; Développement ovocytaire; Ombrine; Sciaenops ocellatus; Fish culture; Induced breeding; LH-RH analogues; Multivariate analysis; Egg quality; Oocyte development; Red drum; Sciaenops ocellatus. Ano: 2000 URL: http://archimer.ifremer.fr/doc/00187/29875/28361.pdf Dynamics of ovarian maturation during the reproductive cycle of Metynnis maculatus, a reservoir invasive fish species (Teleostei: Characiformes) 83 Pereira,Thiago Scremin Boscolo; Moreira,Renata Guimarães; Batlouni,Sergio Ricardo. In this study, we evaluated the dynamics of ovarian maturation and the spawning processes during the reproductive cycle of Metynnis maculatus. Adult females (n = 36) were collected bimonthly between April 2010 and March 2011. The mean gonadosomatic index (GSI) was determined, ovarian and blood samples were submitted for morphometric evaluation and the steroid plasma concentration was determined by ELISA. This species demonstrated asynchronous ovarian development with multiple spawns. This study revealed that, although defined as a multiple spawning species, the ovaries of M. maculatus have a pattern of development with a predominance of vitellogenesis between April and August and have an intensification in spawning in September; in October, a drop in the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Multiple spawns; Oocyte development; Spawning season; Steroid levels. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400821 Reproductive biology and recruitment of bluefish Pomatomus saltatrix (Perciformes: Pomatomidae) in the southwestern Atlantic 103 Souza,Geysa Marinho de; Monteiro-Neto,Cassiano; Costa,Marcus Rodrigues da; Bastos,Ana Luiza; Martins,Raquel Rennó Mascarenhas; Vieira,Francyne Carolina dos Santos; Andrade-Tubino,Magda Fernandes de; Tubino,Rafael de Almeida. ABSTRACT The bluefish, Pomatomus saltatrix (Linneus 1766) is captured by industrial, artisanal, and recreational fisheries throughout its distribution range. The reproductive biology of P. saltatrix in the southwestern Atlantic was studied using 1,102 specimens captured by the Brazilian commercial fleet between March 2014 and December 2015. The recruitment period was identified from records of juveniles in experimental beach seine hauls carried out on sandy beaches in the external sector of Guanabara Bay for four years (2012-2015). Based on the reproductive indices and on the macro- and microscopic analyses of the gonads, spawning peaks were identified in autumn and spring. The size at first maturity was estimated at 35.5, 38.3, and 37.4 cm for females,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fecundity; Histology; Oocyte development; Reproductive dynamics; Spawning seasons; Young-of-the-year. Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702021000100301 Reproductive biology of the mullet Mugil liza (Teleostei: Mugilidae) in a tropical Brazilian bay 103 Albieri,Rafael J.; Araújo,Francisco G.. The reproductive biology of Mugil liza Valenciennes, 1836 is described as a contribution to an elaborate management programm. A total of 243 specimens (89 males and 154 females) were collected in the Sepetiba Bay in south-eastern Brazil from July/2006 to June/2007. The gonadosomatic index (I G) and the sequential development of the ovaries observed through histological studies suggested that the spawning season ranged from May to August. The population reached total sexual maturity (L T100) at 550 and 570 mm total length (L T) for males and females, respectively. Females attained a larger size than males, and the sex ratio was female-biased for fish larger than 500 mm L T. The hepatosomatic index (I H) was significantly related to the I G, indicating that... Tipo: Info:eu-repo/semantics/article Palavras-chave: Hepatosomatic index; Oocyte development; Spawning; Stock conservation. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300003 Aspectos da reprodução do peixe-porco, Balistes capriscus (Gmelin) (Actinopterygii, Tetraodontiformes, Balistidae) coletado na costa sul do Estado de São Paulo, Brasil 104 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 Registros recuperados: 8 Primeira ... 1 ... Última

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