Geographical variation in the reproduction and sexual dimorphism of the Boddaert's tropical racer, Mastigodryas boddaerti (Serpentes: Colubridae)

dc.creatorSIQUEIRA, Débora Mendes
dc.creatorNASCIMENTO, Loana Pastana
dc.creatorMONTINGELLI, Giovanna Gondim
dc.creatorCOSTA, Maria Cristina dos Santos
dc.date.accessioned2014-08-22T12:56:17Z
dc.date.available2014-08-22T12:56:17Z
dc.date.issued2013-10
dc.description.abstractWe obtained data on time of sexual maturity, dimorphism, fecundity and on the reproductive cycle of Mastigodryas boddaerti (Sentzen, 1796) through the examination of 321 preserved specimens, of which 221 were collected in the Brazilian Amazon region and 100 in the Cerrado savannas of Central Brazil. The degree of sexual size dimorphism (snout-vent length, SVL) was significantly greater in the specimens from the Cerrado in comparison with those from the Amazon. Females had a significantly larger number of ventral scales, on average, whereas males had more sub-caudal scales. However, there was no intersexual difference in tail length or head width, although the heads of the males were significantly longer, which may reflect dietary differences. Breeding females from the Amazon region contained between one and six eggs (N = 12, mean = 3.0), whereas two females from the Cerrado had four to six eggs (N = 10, mean = 5.0). No relationship was found between the SVL of the Amazonian females and the number of eggs or vitellogenic follicles they contained (Cerrado females were not analyzed here due to small sample size). Males are smaller than their female counterpart when they reach sexual maturity. Even though females from the Amazon reproduce throughout the year, females from the Cerrado breed seasonality.pt_BR
dc.identifier.citationSIQUEIRA, Débora M. et al. Geographical variation in the reproduction and sexual dimorphism of the Boddaert's tropical racer, Mastigodryas boddaerti (Serpentes: Colubridae). Zoologia (Curitiba), Curitiba, v. 30, n. 5, p. 475-481, out. 2013. Disponível em: <http://www.scielo.br/pdf/zool/v30n5/02.pdf>. Acesso em: 12 mar. 2014. <http://dx.doi.org/10.1590/S1984-46702013000500002>.pt_BR
dc.identifier.issn1984-4670
dc.identifier.urihttps://repositorio.ufpa.br/handle/2011/5465
dc.language.isoengpt_BR
dc.rightsAcesso Aberto
dc.subjectRéptilpt_BR
dc.subjectCobrapt_BR
dc.subjectBiogeografiapt_BR
dc.subjectReprodução animalpt_BR
dc.subjectCaracterísticas sexuaispt_BR
dc.subjectMorfologiapt_BR
dc.subjectMastigodryas boddaertipt_BR
dc.subjectCerradospt_BR
dc.subjectAmazônia brasileirapt_BR
dc.titleGeographical variation in the reproduction and sexual dimorphism of the Boddaert's tropical racer, Mastigodryas boddaerti (Serpentes: Colubridae)pt_BR
dc.typeArtigo de Periódicopt_BR

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