Estratégia reprodutiva e a expressão de caracteres sexuais secundários em Serrapinnus heterodon Eigenmann, 1915 (Characidae : Cheirodontinae)
| العنوان: | Estratégia reprodutiva e a expressão de caracteres sexuais secundários em Serrapinnus heterodon Eigenmann, 1915 (Characidae : Cheirodontinae) |
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| المؤلفون: | Vieira, Carolina Santos |
| المساهمون: | Brito, Marcelo Fulgêncio Guedes de |
| المصدر: | Repositório Institucional da UFS Universidade Federal de Sergipe (UFS) instacron:UFS |
| بيانات النشر: | Universidade Federal de Sergipe, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | CIENCIAS BIOLOGICAS::ECOLOGIA [CNPQ], Bony hooks, Characidae, Reproduction, Ganchos ósseos, Reprodução animal, Sexual dimorphism, Fecundidade, Desenvolvimento gonadal, Gill gland, Dimorfismo sexual, Peixe, Glândula branquial, Gonadal development |
| الوصف: | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Tropical regions are often associated with variations in rainfall and temperature. Scenarios like these influence the life cycles of populations in environments subject to fluctuations in abiotic factors, and are often associated with fish reproduction. The reproductive strategies adopted by the species are closely related to the composition of the environment and the evolutionary history of taxonomic groups, taking into account their adaptive capacities. Species with adults of small size and peculiar reproductive attributes exhibit characteristics of specific reproductive strategies. The development of secondary sexual characteristics complements the complexity of reproductive patterns displayed among the groups. Cheirodontinae are abundant in lentic ecosystems and river banks, with species mostly with small size, which includes Serrapinnus heterodon. The present study intended to evaluate the reproductive strategy and the expression of secondary sexual characters in S. heterodon. Specimens of S. heterodon (n=2916, 431 females and 432 males analyzed) were collected between April/2012 and March/2014 in Poxim river, São Cristóvão (SE). Reproductive individuals were found throughout the study period, with minimum sizes of 24.36mm (females) and 22.61mm (males). The reproductive strategy of the species was characterized as opportunistic. The relationship between reproductive rates and the months of the study period showed significant differences (Females: GSI - H=212.5; HSI - H=114, K: H=268.2, p |
| وصف الملف: | application/pdf |
| اللغة: | Portuguese |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::10bdd45a2dd9f6f74f3dce3968db38eb https://ri.ufs.br/handle/riufs/4425 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.dedup.wf.001..10bdd45a2dd9f6f74f3dce3968db38eb |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |