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Registros recuperados: 38
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Aspects of fishing and reproduction of the black grouper Mycteroperca bonaci (Poey, 1860) (Serranidae: Epinephelinae) in the Northeastern Brazil Neotropical Ichthyology
Teixeira,Simone Ferreira; Ferreira,Beatrice Padovani; Padovan,Isaíras Pereira.
The reproductive biology of the black grouper Mycteroperca bonaci, caught by artisanal fishermen using hook and line or compressor - assisted spear fishing, from the Northeastern shelf and oceanic banks of Brazil, was studied between August 1996 and April 1998. The sexual pattern, gonadal development, the spawning mode and seasonality were investigated. The gonadal stages indicated that this species is a protogynous hermaphrodite and that transition from female to male occurs through simultaneous re-absorption of ovarian tissue and proliferation of testicular tissue in the gonads. The specie is a multiple spawner and frequency analysis of gonadal stages and gonadosomatic index suggest that the spawning season occurs between April and September....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Serranid; Reproductive biology; Protogynous hermaphrodite; "correção"; Feeding aggregation.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000100004
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Atypical distyly in Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species Acta Botanica
Rodrigues,Ebenezer Barbosa; Consolaro,Hélder.
Distyly is a genetically controlled floral dimorphism, characterized by the reciprocal positioning of pin and thrum morphs, a heteromorphic incompatibility system and a balanced morph ratio (isoplethy). This study aimed to investigate the phenology, features of distyly, reproductive biology, and floral visitors of Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species, in a tropical semideciduous forest in the municipality of Catalão, located in the state of Goiás, Brazil. The phenology was recorded for a sample of individuals, the floral morphology being described using fresh and fixed material. The incompatibility system was tested using controlled hand pollinations. Floral visitors were collected and identified. Blooming...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heterostyly; Monomorphism; Cerrado; Reproductive biology.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100016
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Behavioral ecology of Heteragrion consors Hagen (Odonata, Megapodagrionidae): a shade-seek Atlantic forest damselfly Rev. Bras. entomol.
Loiola,Geovanni Ribeiro; De Marco,Paulo.
Behavioral ecology of Heteragrion consors Hagen (Odonata: Megapodagrionidae): a shade-seek Atlantic forest damselfly. The intensity of the inter and intra-sexual selection can affect male behavioral traits as territorial fidelity and aggressiveness allowing the existence of different strategies. However, its differential success could be affected by environmental - as the diel variation in temperature - and physiological constrains - as the variation in thermoregulatory abilities. In this context, we present a behavioral analysis of Heteragrion consors (Zygoptera, Megapodagrionidae) trying to characterize its mating system, diel activity pattern, temporal budget, territoriality and reproductive biology. These data were obtained based on field observations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mating systems; Reproductive biology; Temporal budget; Thermoregulation; Territoriality.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300010
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Biologia reprodutiva de Calibrachoa elegans (Miers) Stehmann & Semir (Solanaceae) Rev. Bras. Bot.
STEHMANN,JOÃO RENATO; SEMIR,JOÃO.
Calibrachoa elegans é uma espécie anual, endêmica da região da canga do quadrilátero ferrífero de Minas Gerais, Brasil. O estudo da sua biologia reprodutiva envolveu experimentos de cruzamentos, teste do sistema de auto-incompatibilidade e observação do processo de polinização. Os experimentos realizados através de polinizações manuais indicam que a população estudada é preferencialmente alógama. A interrupção do crescimento do tubo polínico no estilete das flores autopolinizadas, verificada através da microscopia de fluorescência, confirmou a ocorrência de reação de auto-incompatibilidade. A polinização é realizada apenas pelas fêmeas de Hexantheda missionica (Colletinae, Apoideae), uma abelha com alta fidelidade de visita às flores de C. elegans. Os...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproductive biology; Conservation; Biogeography; Hexantheda missionica; Calibrachoa elegans.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000100005
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Biology of Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) on seven natural foods Neotropical Entomology
Bentancourt,Carlos M.; Scatoni,Iris B.; Gonzalez,Alvaro; Franco,Jorge.
The effect of seven natural diets on the development and reproduction of Bonagota cranaodes (Meyrick) was evaluated under laboratory conditions. The experiments were carried out at the temperature of 23 ± 1ºC, with 70 ± 10% of RH and a photoperiod of 16:8h (L:D). The larvae were reared on apple, grapevine and honeysuckle (Lonicera japonica). On the first two foods three types of diet were used: spring leaves, summer leaves and fruits. The number of instars varied from five to seven. The larvae reared on apple leaves had, in general, fewer instars than those reared on grapevine and honeysuckle leaves. The duration of larval development differed between diets. The larvae reared on spring apple leaves showed the shortest duration, and those on fruit the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Leafroller; Diet; Host plant; Immature stage; Reproductive biology.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000300004
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Effect of Host Plant on the Fecundity of Spittlebug Deois flavopicta Stal (Homoptera: Cercopidae): Implications on Population Dynamics Neotropical Entomology
SUJJI,E.R.; PIRES,C.S.S.; FONTES,E.M.G.; GARCIA,M.A..
The spittlebug Deois flavopicta Stal (Hom.: Cercopidae) occurs naturally on native grasses in Central Brazil in low population densities. After the introduction of African grasses, mainly of the genus Brachiaria, for cattle raising, D. flavopicta began to produce population outbreaks and became a pest. Two studies were conducted, aiming to estimate the effects of a native and an exotic host plant on the fecundity of this insect. Females of D. flavopicta maintained during the adult stage on Brachiaria ruziziensis produced more eggs and lived longer than those maintained on Axonopus marginatus (a native grass widely distributed in Brazil), independently of the host plant on which the nymphs were reared. Due to the severe damage produced by adult D....
Tipo: Info:eu-repo/semantics/other Palavras-chave: Insecta; Population dynamics; Reproductive biology; Insect-plant interaction; Population outbreaks.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400006
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Effect of ivermectin on the life cycle and larval fat body of Culex quinquefasciatus BABT
Alves,Stenio Nunes; Serrão,José Eduardo; Mocelin,Giovani; Melo,Alan Lane de.
The present work investigated the behavior, survival rate and lethal effect of 1.5 ppb ivermectin on Culex quinquefasciatus larvae, based on morphological and biological parameters, and possible alterations of their fat body. Changes in the number of eggs/egg mass and length of the larval stage were investigated. For this experiment, 600 larvae of 3rd and 4th instars of the mosquito were tested. The laid eggs were separated and the hatched larvae were counted. Some larvae submitted to 1.5 ppb ivermectin solution were used to prepare samples for histological study. Results obtained showed that ivermectin in a concentration of 1.5 ppb caused paralysis to the larvae with a mortality rate of 73.38%, mobilization of substances stored in the fat body and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diptera; Fat body; Insecticide; Mosquito; Reproductive biology.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300014
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Entomofauna visitante de Belamcanda chinensis (L.) DC (Iridaceae) durante o período de floração Zoologia
Vitali,Maria de Jesus; Dutra,João Clovis Stanzani; Machado,Vera Lígia Letízio.
A study of the reproductive biology of B. chinensis (L.) DC. (Iridaceae) was realized comprising floral biology and breeding systems. The floral biology studies included analyses of nectar production, occurence of osmophores, corolla pigments, ultraviolet reflexion and absortion patterns, viability of pollen, pollinators and flower visitors. The breeding systems were studied taking into account the results of manual pollinators tests. B. chinensis is self-compatible bul cross-pollination is more frequent. The effective pollinators are Plebeia droryana (Friese, 1906) (45,7%), Trigona spinipes (Fabricius, 1793) (27,3%), Tetragonisca angustula (Latreille, 1811) (9,3%). Others insects visitors are considered nectar and pollen thieves. The flowering begins...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Belamcanda chinensis; Pollination; Insect visitors; Floral biology; Reproductive biology.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000200003
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Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil Pap. Avulsos de Zool. (São Paulo)
Oliveira,Mário Vitor; Costa-Souza,Ana Carla; Mariano,Rodolfo; Almeida,Alexandre Oliveira.
Abstract Studies on fecundity and embryo size have been frequently used to infer about the reproductive potential, embryogenesis, and the energy investment in embryo production in crustaceans. These parameters are relevant to the knowledge of life-history and diversity of reproductive strategies developed by this group. This study addressed the embryo production by the estuarine shrimp Salmoneus carvachoiAnker, 2007, a poorly known caridean shrimp. We investigated whether there was (1) a correlation between fecundity and carapace length, (2) an increase in embryo volume along the embryonic development, and (3) loss of embryos along development. In addition, we investigated whether the esternite length and height and width of the pleura of the second...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caridea; Abdominal space; Embryogenesis; Reproductive biology; Reproductive potential.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100243
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Fossil evidence of the zygomycetous fungi Naturalis
Krings, M.; Taylor, T.N.; Dotzler, N..
Molecular clock data indicate that the first zygomycetous fungi occurred on Earth during the Precambrian, however, fossil evidence of these organisms has been slow to accumulate. In this paper, the fossil record of the zygomycetous fungi is compiled, with a focus on structurally preserved Carboniferous and Triassic fossils interpreted as zygosporangium-gametangia complexes and resembling those of modern Endogonales. Enigmatic microfossils from the Precambrian to Cenozoic that have variously been interpreted as, or compared to, zygomycetous fungi are also discussed. Among these, the spherical structures collectively termed ‘sporocarps’ are especially interesting because of their complex investments and abundance in certain Carboniferous and Triassic rocks....
Tipo: Article / Letter to the editor Palavras-chave: Endogonales; Fossil record; Morphology; Reproductive biology; Sporocarp; Zygosporangium-gametangia complex.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/532004
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Genetics, evolution and conservation of Bromeliaceae Genet. Mol. Biol.
Zanella,Camila M.; Janke,Aline; Palma-Silva,Clarisse; Kaltchuk-Santos,Eliane; Pinheiro,Felipe G.; Paggi,Gecele M.; Soares,Luis E.S.; Goetze,Márcia; Büttow,Miriam V.; Bered,Fernanda.
Bromeliaceae is a morphologically distinctive and ecologically diverse family originating in the New World. Three centers of diversity, 58 genera, and about 3,140 bromeliad species are currently recognized. We compiled all of the studies related to the reproductive biology, genetic diversity, and population structure of the Bromeliaceae, and discuss the evolution and conservation of this family. Bromeliads are preferentially pollinated by vertebrates and show marked variation in breeding systems, from predominant inbreeding to predominant outcrossing, as well as constancy in chromosome number (2n = 2x = 50). Autogamous or mixed mating system bromeliads have a high inbreeding coefficient (F IS), while outcrossing species show low F IS. The degree of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bromeliads; Cytogenetics; Genetic diversity; Population structure; Reproductive biology.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600017
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Intersexuality in the porcellanid crab Pisidia longicornis (Crustacea: Decapoda: Anomura: Porcellanidae) Rev. Bras. Zool.
Ferreira,Luciane Augusto de Azevedo.
Intersex specimens of Pisidia longicornis (Linnaeus, 1767) are recorded for the first time and their secondary sexual characters are analyzed. Of 145 specimens of P. longicornis examined in this study, six were identified as intersex individuals. Of these, three presented male secondary sexual characters, well-developed male gonopores and rudimentary female gonopores, whereas the other three had female secondary sexual characters, with female gonopores being more pronounced than the male ones. The present study provides the first record of intersex porcelain crabs.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Malacostraca; Porcelain crabs; Sexual characters; Reproductive biology.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000200176
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Life Cycle Observations on Amphilocus neapolitanus (Della Valle, 1853) (Crustacea, Amphipoda) Associated with Sargassum cymosum C. Agardh, 1820 in Ubatuba, (SP), Brazil BABT
Leite,Fosca Pedini Pereira.
Day and night densities, reproductive biology and life cycle of Amphilocus neapolitanus (Della Valle, 1853), associated with Sargassum cymosum C. Agardh, 1820, were studied during 13 months. The density of juveniles, males and females was higher in night samples than in day samples. Sex ratio was strongly favorable toward the females. Ovigerous females were present in similar densities in both the periods while the non-ovigerous females were predominant at night. The egg number was not correlated with the size of the females. Breeding occurred throughout the year.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Population structure; Reproductive biology; Life cycle; Amphipoda; Sargassum.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300014
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Local ecological knowledge of fishers about the life cycle and temporal patterns in the migration of mullet (Mugil liza) in Southern Brazil Neotropical Ichthyology
Herbst,Dannieli Firme; Hanazaki,Natalia.
This research investigates local ecological knowledge of fishers in communities along a latitudinal gradient in the coast of the Santa Catarina State, regarding the life cycle of mullets Mugil liza (migration, feeding, and reproductive behavior). Our sampling encompassed eight Santa Catarina coastal cities (nine artisanal fishing sites) and engaged 45 key informants (28- 86 years of age) through semi-structured interviews from August/2011 to March/2012. This fish species feeds and grows in lagoon and estuarine systems, migrating to the sea for reproduction, and spawning. Fishers acknowledged the Patos Lagoon and the Plata River as the main source of mullet schools. Migration occurs from South to North and the routes vary according to climatic and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artisanal fisheries; Ethnoecology; Feeding; Mugilidae; Reproductive biology.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400879
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Mixed reproduction systems in Opuntia monacantha (Cactaceae) in Southern Brazil Rev. Bras. Bot.
Lenzi,Maurício; Orth,Afonso Inácio.
The Cactaceae have morphological and physiological adaptations associated with their life histories that are reflected in different modes of reproduction and multiplication. The reproductive phenology, preferential reproductive mode, and the sexual and asexual multiplication of Opuntia monacantha were investigated between 2003 and 2006 in two restinga (sandy coastal) environment in Southern Brazil to determine the adaptive values of its reproduction modes. Flowering was annual and occurred continuous for approximately 100 days between the months of September and January, with a few flowers opening per day per individual (but many in the whole population). Facultative xenogamy was identified as the preferential sexual system, with the highest levels of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cacti; Clonal multiplication; Reproductive biology; Restinga vegetation.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000100006
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Notes on collections of fruit bats from Sulawesi and some off-lying islands (Mammalia, Megachiroptera) Naturalis
Bergmans, W.; Rozendaal, F.G..
Notes are given on the taxonomy, reproductive biology, ecology and ectoparasites of 20 species of - mostly recently collected - Megachiroptera from Sulawesi, Indonesia. The occurrence of one species on Sulawesi is considered doubtful and a further three species are deleted from the Sulawesian faunal list. A key based on externally visible characters and a gazetteer of the collecting localities of Sulawesian bats are appended.
Tipo: Article / Letter to the editor Palavras-chave: Megachiroptera; Sulawesi; Sangihe Islands; Taxonomy; Zoogeography; Biometry; Ecology; Reproductive biology; Ectoparasites.; 42.84.
Ano: 1988 URL: http://www.repository.naturalis.nl/record/317853
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Observações sobre a biologia reprodutiva de três espécies de jacarés na Amazônia Central. Infoteca-e
CAMPOS, Z. M. da S..
O estudo de reprodução dos jacarés amazônicos foi feito no lago Cururu, situado no rio Solimões, AM, em 2001 e 2002. Nos dois anos, entre os meses de novembro a janeiro, foram encontrados 60 (sessenta) ninhos de jacaré-tinga, Caiman crocodilus crocodilus. O tamanho das fêmeas reprodutivas de jacaré-tinga variou de 70,0 a 87,0 cm de comprimento rostro-anal (CRA). O número médio de ovos foi de 25 (DP= 5,6), variando de 14 a 38. O comprimento médio dos ovos foi de 57,8 cm (DP= 3,4) e a largura media foi de 35,9 (DP=3,1). No segundo ano, foram encontrados dois ninhos de jacaré-paguá, Paleosuchus palpebrosus, um deles foi predado e o outro tinha 15 ovos e a fêmea mediu 69 cm de CRA, e dois ninhos de jacaré-açu, Melanosuchus niger. O potencial reprodutivo deve...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Biologia reprodutiva; Amazônia Central; Caiman crocodilus crodilus; Reproductive biology; Central Amazon.; Jacaré; Reprodução.; Reproduction..
Ano: 2003 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/809829
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Occurrence of the Indo-Pacific freshwater prawn Macrobrachium equidens Dana 1852 (Decapoda, Palaemonidae) on the coast of Brazilian Amazonia, with notes on its reproductive biology Anais da ABC (AABC)
Maciel,Cristiana R; Quadros,Manoel L; Abrunhosa,Fernando; Bastos,Sandra; Schneider,Horacio; Sampaio,Iracilda.
The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for the first time on the Amazon coast of Brazil. This species was found to inhabit the same environment as two native Macrobrachium species, M. amazonicum and M. acanthurus, and is morphologically very similar to the latter. The identification of the species was confirmed by the genetic analysis of sequences of the mitochondrial Cytochrome Oxidase (COI) gene. A detailed description of the morphological features and reproductive biology of M. equidens in this new environment is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crustacean; Caeté Estuary; Invasive species; Mitochondrial COI gene; Reproductive biology.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200013
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Ovarian development and spawning of Macrobrachium amazonicum (Crustacea, Decapoda) Iheringia, Sér. Zool.
Ventura,Emerson; Winick-Silva,Allysson; Shinozaki-Mendes,Renata A..
ABSTRACT Macrobrachium amazonicum (Heller, 1862) is the most important species for aquaculture native to South America. This study evaluates the phenotypic plasticity of females of Macrobrachium amazonicum with respect to the gonadal development, and determines the spawning type. Our study consisted of macro and microscopic analysis of the reproductive tract. Ovaries exhibited the following reproductive cells in developmental sequence: oogonia (OO) - mean diameter and standard deviation of 25.4 ± 6.5 μm; previtellogenic oocyte (PVO) - 61.7 ± 10.7 μm, vitellogenic oocyte (VO) - 113.9 ± 24.5 μm; and mature oocyte (MO) - 308.7 ± 56.3 μm. Ovaries increased in volume due to vitellogenesis and changing of basophilic to acidophilic composition. Follicular cells,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproductive biology; Maturation; Clutches of oocytes; Histology; Amazon River prawn.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100226
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Patterns of energy allocation to reproduction in three Amazonian fish species Neotropical Ichthyology
Santos,Rodrigo N. dos; Amadio,Sidinéia; Ferreira,Efrem J. G..
The study considered the influence of the hydrological cycle and gonadal development on the accumulation and use of energy in three fish species from an Amazonian flooded area. Fishes were sampled over a 24 hour period at monthly intervals between July 2004 and June 2005 using gillnets of different mesh sizes. Body cavity fat and gonadosomatic indices were determined, as well as energy content of gonads and muscles. Amongst the studied species, different means of energy allocation for reproduction were found: Acestrorhynchus falcirostris allocate energy from body cavity fat to its gonads; Pygocentrus nattereri uses mainly energy accumulated in the muscles for the process of gonadal maturation; and Hoplosternum littorale uses energy accumulated in their...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon floodplain; Energy contents; Hydrological cycle; Reproductive biology.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100018
Registros recuperados: 38
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