11 results on '"Maturidade sexual"'
Search Results
2. Size of nesting female Broad-snouted Caimans (Caiman latirostris Daudin 1802).
- Author
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Leiva, P. M. L., Simoncini, M. S., Portelinha, T. C. G., Larriera, A., and Piña, C. I.
- Subjects
NEST building ,BROAD-nosed caiman ,SEXUAL maturity in mammals - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
3. Size of nesting female Broad-snouted Caimans (Caiman latirostris Daudin 1802)
- Author
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P. M. L. Leiva, M. S. Simoncini, T. C. G. Portelinha, A. Larriera, and C. I. Piña
- Subjects
manejo ,classe de tamanho ,reprodução ,maturidade sexual ,Science ,Biology (General) ,QH301-705.5 ,Zoology ,QL1-991 ,Botany ,QK1-989 - Abstract
Abstract The southern distribution of the Broad-snouted Caiman (Caiman latirostris Daudin 1802) in Argentina occurs in Santa Fe Province, where its population has been under management by “Proyecto Yacaré” since 1990. From 1997 to 2016, we captured 77 nesting female Broad-snouted Caimans in Santa Fe Province. Our results suggest that previously defined size classes for Broad-snouted Caiman do not adequately describe the reproductively mature female segment of the population. Here we propose to change size ranges for general size classes for Broad-snouted Caiman. In addition, we have observed that reintroduced reproductive females by Proyecto Yacaré represent about 32% of captured females. These results indicate that reintroduced females by the management program are surviving and reproducing in the wild at least up to 20 years.
- Published
- 2018
- Full Text
- View/download PDF
4. Reproductive features of the swimming crab Callinectes danae (Crustacea, Portunoidea) on the subtropical coast of Brazil: a sampling outside the estuary.
- Author
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Andrade, L. S., Antunes, M., Lima, P. A., Furlan, M., Frameschi, I. F., and Fransozo, A.
- Subjects
PORTUNIDAE ,CRAB reproduction ,COASTS ,ANIMAL life cycles ,SEXUAL maturity in Crustacea ,GONAD physiology - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
- Full Text
- View/download PDF
5. Morphological indicators of initial reproductive commitment in Mustelus schmitti (Springer 1939) (Chondrichthyes, Triakidae): folliculogenesis and ovarian structure over the life cycle.
- Author
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Galíndez, E. J., Díaz Andrade, M., and Estecondo, S.
- Subjects
MUSTELUS schmitti ,TRIAKIDAE ,FISH morphology ,FISH reproduction ,OVARIAN follicle ,FISH life cycles ,CHONDRICHTHYES - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
- View/download PDF
6. Reproduction of Phylloderma stenops in captivity (Chiroptera, Phyllostomidae).
- Author
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Esbérard, C. E. L.
- Subjects
BAT reproduction ,COLONIAL animals (Marine invertebrates) ,COCKROACHES ,SYNCHRONIZATION ,SEXUAL maturity in mammals ,GESTATIONAL age ,ANIMAL species - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
7. Sexual dimorphism in the squirrel monkey, Saimiri sciureus (Linnaeus, 1758) and Saimiri ustus (I. Geoffroy, 1844) (Primates, Cebidae).
- Author
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Goldschmidt, B., Mota-Marinho, A., Araújo-Lopes, C., Brück-Gonçalves, M. A., Matos-Fasano, D., Ribeiro-Andrade, M. C., Ferreira-Nascimento, L. W., Simmer-Bravin, J., and Monnerat-Nogueira, D.
- Subjects
SEXUAL dimorphism in animals ,SQUIRREL monkeys ,SAIMIRI sciureus ,ANIMAL morphology ,PRIMATE reproduction - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
- Full Text
- View/download PDF
8. Size of nesting female Broad-snouted Caimans (Caiman latirostris Daudin 1802)
- Author
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Melina Soledad Simoncini, Alejandro Larriera, Pamela M. L. Leiva, Thiago Costa Gonçalves Portelinha, and Carlos I. Piña
- Subjects
0106 biological sciences ,Population ,Argentina ,010607 zoology ,Zoology ,classe de tamanho ,reprodução ,01 natural sciences ,sexual maturity ,purl.org/becyt/ford/1 [https] ,Ciencias Biológicas ,reproduction ,size class ,lcsh:Botany ,lcsh:Zoology ,Animals ,Body Size ,lcsh:QL1-991 ,lcsh:Science ,purl.org/becyt/ford/1.6 [https] ,education ,lcsh:QH301-705.5 ,Alligators and Crocodiles ,education.field_of_study ,biology ,Reproduction ,010604 marine biology & hydrobiology ,maturidade sexual ,Zoología, Ornitología, Entomología, Etología ,biology.organism_classification ,Change size ,lcsh:QK1-989 ,Caiman latirostris ,lcsh:Biology (General) ,manejo ,Nesting (computing) ,lcsh:Q ,Female ,General Agricultural and Biological Sciences ,CIENCIAS NATURALES Y EXACTAS ,management - Abstract
The southern distribution of the Broad-snouted Caiman (Caiman latirostris Daudin 1802)in Argentina occurs in Santa Fe Province, where its population has been undermanagement by "Proyecto Yacaré" since 1990. From 1997 to 2016, we captured 77 nesting female Broad-snoutedCaimans in Santa Fe Province. Our results suggest that previously definedsize classes for Broad-snouted Caiman do not adequately describe the reproductivelymature female segment of the population. Here we propose to change size rangesfor general size classes for Broad-snouted Caiman. In addition, we have observed that reintroducedreproductive females by Proyecto Yacaré represent about 32% of capturedfemales. These results indicate that reintroduced females bythe management program are surviving and reproducingin the wild at least up to 20 years. Na Argentina, a distribuição mais austral do jacaré-de-papo-amarelo (Caiman latirostris Daudin 1802) ocorre na Provincia de Santa Fe, sendo que suas populações são manejadas pelo “Proyecto Yacaré” desde 1990. Entre os anos de 1997 e 2016, nós capturamos 77 fêmeas nidificantes do jacaré-de-papo-amarelo em Santa Fe. Nossos resultados sugerem que as classes de tamanho definidas para o jacaré-de-papo-amarelo não representam a realidade dos animais capturados no presente estudo. Portanto, propõe-se uma alteração nas classes de tamanho para o jacaré-de-papo‑amarelo. Nós também observamos que as fêmeas reintroduzidas pelo “Proyecto Yacaré” representaram 32% das fêmeas capturadas. Estes resultados indicam que fêmeas reintroduzidas pelo programa de manejo estão sobrevivendo e reproduzindo na natureza por, pelo menos, 20 anos. Fil: Leiva, Pamela Maria de Lujan. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias. Departamento de Ciencias Naturales. Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC-UNL/MASPyMA); Argentina Fil: Simoncini, Melina Soledad. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias. Departamento de Ciencias Naturales. Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC-UNL/MASPyMA); Argentina Fil: Costa Gonçalves Portelinha, Thiago. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina. Universidade Federal do Tocantins ; Brasil Fil: Larriera, Alejandro. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias. Departamento de Ciencias Naturales. Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC-UNL/MASPyMA); Argentina. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario; Argentina Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias. Departamento de Ciencias Naturales. Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC-UNL/MASPyMA); Argentina. Universidad Autonoma de Entre Rios. Facultad de Ciencia y Tecnologia. Departamento de Fisica.; Argentina
- Published
- 2019
9. Características reprodutivas do siri Callinectes danae(Crustacea, Portunoidea) na região subtropical da costa do Brasil: uma amostragem fora do estuário
- Author
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Adilson Fransozo, Paloma Aparecida de Lima, Israel Fernandes Frameschi, Michele Furlan, Mariana Antunes, and Luciana Segura de Andrade
- Subjects
Male ,Callinectes ,atividade reprodutiva ,Brachyura ,blue crab ,reproductive activity ,sexual maturity ,alterações na ocupação do hábitat ,Abundance (ecology) ,Portunoidea ,lcsh:Botany ,lcsh:Zoology ,Animals ,Sexual maturity ,Sexual Maturation ,lcsh:QL1-991 ,Transect ,lcsh:Science ,lcsh:QH301-705.5 ,geography ,geography.geographical_feature_category ,biology ,Reproduction ,Estuary ,maturidade sexual ,siri azul ,biology.organism_classification ,Crustacean ,lcsh:QK1-989 ,Fishery ,change in habitat use ,lcsh:Biology (General) ,Female ,lcsh:Q ,Seasons ,General Agricultural and Biological Sciences ,Bay ,Brazil - Abstract
The life cycle of the crab Callinectes danae is estuarine-dependent, and studies on aspects of their biology should also cover marine areas. The present study investigated the sexual maturity, as well as habitat preference by adults in different gonadal stages, and the crabs’ reproductive periodicity outside the estuary. Three bays on the subtropical southeastern coast of Brazil were sampled monthly for two years. For each bay, six transects were established, four of them parallel to the beach line (5, 10, 15 and 20 m depth), as well as one transect in an exposed area, and another sheltered from the action of waves. The results showed that the pattern of spatio-temporal distribution of adults C. danae was similar in three bays, although the highest abundance was found in Ubatumirim. Females with developed gonads/ovigerous females were found in greater abundance than females with rudimentary/developing gonads, mainly in deeper transects. Although the areas sampled have different environmental characteristics, the reproductive pattern of the species did not change, showing continuous reproduction throughout, with more abundance of reproductive females on spring and summer. Males reached maturity at larger sizes than females in all three bays. ResumoO siri Callinectes danae é estuarino dependente em seu ciclo de vida, sendo que os estudos que levantam informações sobre os aspectos da sua biologia devem também abranger regiões marinhas. Assim, o presente estudo teve como objetivo investigar a maturidade sexual, bem como a preferência ocupacional por adultos em diferentes estágios gonadais e sua periodicidade reprodutiva fora da região estuarina. Para tanto, três enseadas da porção subtropical do litoral sudeste brasileiro foram amostradas mensalmente, durante dois anos. Para cada enseada, seis transectos foram estabelecidos, quatro deles paralelos à linha de praia (5, 10, 15 e 20m de profundidade), um transecto exposto e outro abrigado à ação de ondas. Os resultados mostraram que o padrão de distribuição espaço-temporal de adultos de C. danae foi similar nas três enseadas, embora uma maior abundância tenha sido encontrada em Ubatumirim. Fêmeas ovígeras e com gônadas desenvolvidas foram encontradas em maior abundância que fêmeas com gônadas rudimentares e em desenvolvimento, principalmente nos transectos mais profundos. Apesar das regiões amostradas possuírem características ambientais diferenciadas, o padrão reprodutivo da espécie não sofreu alterações, apresentando reprodução contínua, com maior abundância de fêmeas reprodutivas na primavera e verão. Machos atingiram maturidade em tamanhos maiores que as fêmeas nas três enseadas.
- Published
- 2015
10. Morphological indicators of initial reproductive commitment in Mustelus schmitti (Springer 1939) (Chondrichthyes, Triakidae): folliculogenesis and ovarian structure over the life cycle
- Author
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M. C Díaz Andrade, Silvia Estecondo, and Elena Juana Galíndez
- Subjects
Zoology ,Biology ,Chondrichthyans ,reprodução ,sexual maturity ,reproduction ,Ovarian Follicle ,lcsh:Botany ,lcsh:Zoology ,Animals ,lcsh:QL1-991 ,Sexual Maturation ,lcsh:Science ,lcsh:QH301-705.5 ,Life Cycle Stages ,condrictios ,Reproduction ,Ovary ,Fishes ,maturidade sexual ,lcsh:QK1-989 ,ovário ,lcsh:Biology (General) ,Oocytes ,lcsh:Q ,Female ,ovary ,Seasons ,General Agricultural and Biological Sciences ,gatuzo - Abstract
This work provides information about the sexual commitment and the folliculogenesis of the gatuzo, Mustelus schmitti. A total of 112 females of all maturity stages were fished in the Bahía Blanca estuary, between 2009 and 2010. The oogonia were present throughout the life cycle of the animals. The folliculogenesis follows a pattern similar to other elasmobranchs. The granulosa layer keeps monolayered throughout the folliculogenesis, but with two cell types in the vitellogenic follicle. The zona pellucida forms in the primordial follicles. The thecal system shows a connective inner layer and a glandular outer sheath. The microscopic beginning of the sexual commitment, indicated by the vitello hoarding, takes place in follicles from 500 micrometres, while the macroscopic evidence appears in follicles of 2500-3000 micrometres. The results presented in this study suggest that the fishery pressure may affect a susceptible range of sizes of the species, not previously considered and provides a biological framework for the development of fisheries policy. Este trabalho provê informações sobre o compromisso sexual e da foliculogênese do gatuzo, Mustelus schmitti. Um total de 112 fêmeas de todas as fases de maturidade foram pescados no estuário Bahía Blanca, entre 2009 e 2010. O oogônias foi presentes durante todo do ciclo de vida dos animais. A foliculogênese segue um padrão semelhante a outros elasmobrânquios. A capa granulosa mantém-se simples durante toda a foliculogénese, mas com dois tipos de células no folículo vitelogênico. A zona pelúcida forma-se nos folículos primordiais. O sistema mostra uma capa tecal interior de tecido conjuntivo e uma bainha exterior glandular. O início microscópico do compromisso sexual, indicado pela acumulação do vitello, realiza-se em folículos de 500 micrómetros, enquanto que a evidência macroscópica aparece em folículos de 2500-3000 micrómetros. Os resultados apresentados neste estudo sugerem que a pressão da pesca pode afetar um amplo intervalo de tamanho das espécies não considerado anteriormente, e fornece uma base biológica para o desenvolvimento de política comum da pesca.
- Published
- 2014
11. Reprodução de Phylloderma stenops Peters em cativeiro (Mammalia, Chiroptera, Phyllostomidae)
- Author
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Esbérard,CEL
- Subjects
reproduction ,gestation ,gestação ,neonato ,maturidade sexual ,neonate ,reprodução ,sexual maturity - Abstract
A reproductive colony of Phylloderma stenops was established in captivity. The bats were maintained in 1/2" wired screen cages sized 90 × 60 × 80 cm in a room with cycles of 13 hours of light and 11 hours of dark and with temperature and humidity ranging from 27 to 31 °C and 75 to 90% respectively. Bats were fed with a semi-liquid diet composed of chopped fruits, raw eggs, bovine meat, dog food, honey, dehydrated shrimp, salt and a vitamin and mineral complex offered daily. In the first two years of confinement the diet was complemented with laboratory-raised cockroaches, mealworms, young mice and seasonal fruits. Nine births occurred from three wild caught females 770-1050 days after capture and two captive-born females. Births occurred in September, February and November-December. The neonate measured 15.0 g of weight and present 34.1 mm of forearm length. Two captive-born females gave birth for the first time at 402-445 days of age. Phylloderma stenops species presents postpartum oestrus, gestation of 5.5 months, lactation of 3.3 months and sexual maturity at 8.0-8.5 months. Fetuses are palpable around two months before birth and females may present synchronisation of births. Uma colônia reprodutiva de Phylloderma stenops foi implantada em cativeiro. Os morcegos foram mantidos em gaiolas de tela de arame de 1/2", com tamanho de 90 × 60 × 80 cm, em sala com ciclo de 13 horas de luz e 11 horas de escuro, com temperatura e umidade variando de 27 a 31 °C e 75 a 90%, respectivamente. Nove nascimentos ocorreram durante o estudo envolvendo três fêmeas selvagens e duas nascidas em confinamento. Os morcegos foram alimentados com dieta semilíquida composta por frutas picadas, ovos cozidos, carne bovina, ração de cachorro, mel, camarões desidratados, sal e complexos vitamínicos, oferecida diariamente. Nos dois primeiros anos de confinamento, a dieta foi complementada com baratas criadas em cativeiro, larvas de tenebrio, camundongos jovens e frutas sazonais. Nove partos ocorreram entre três fêmeas selvagens 770-1050 dias após a captura e duas fêmeas concebidas em cativeiro. Os nascimentos ocorreram em setembro, fevereiro e dezembro. O neonato pesou 15,0 g e apresentou 34,1 mm de comprimento do antebraço. Duas fêmeas concebidas em cativeiro pariram com idade de 402-445 dias. Phylloderma stenops apresenta estro pós-parto, gestação de 5,5 meses, lactação de 3,3 meses e maturidade sexual aos 8,0-8,5 meses. Fetos são detectáveis através de apalpação cerca de dois meses antes do nascimento e as fêmeas podem apresentar sincronização dos nascimentos.
- Published
- 2012
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