Is rainfall seasonality important for reproductive strategies in viviparous Neotropical pit vipers? A case study with Bothrops leucurus from the Brazilian Atlantic Forest

Is rainfall seasonality important for reproductive strategies in viviparous Neotropical pit vipers? A case study with Bothrops leucurus from the Brazilian Atlantic Forest

Author Barros, Veronica Alberto Google Scholar
Rojas, Claudio Augusto Autor UNIFESP Google Scholar
Almeida-Santos, Selma Maria Google Scholar
Institution Univ Estadual Paulista
Inst Butantan
Universidade Federal de São Paulo (UNIFESP)
Abstract Two populations of the Neotropical lancehead Bothrops leucurus were studied in two locations in Brazil (Espirito Santo, ES, and Bahia, BA) with different rainfall seasonality patterns. The timing of reproduction was very similar in both populations, with the mating season occurring in autumn (when spermatozoa were found in uteri) and births occurring in summer. In males, spermatogenesis peaked in autumn, with evidence for increased secretory activity in the epithelium of the ductus deferens during the mating season in both populations. Our results indicate that phylogenetic inertia plays a major role in determining the timing of reproductive events in B. leucurus. However, snout-vent length (SVL) and clutch size were larger in individuals from BA than ES, which may be a result of differences in rainfall seasonality or other proximate factors (e.g., differential prey availability).
Keywords clutch size
environmental conditions
long-term sperm storage
phylogenetic inertia
reproductive cycles
spermatogenesis
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 2008/56169-5
FAPESP: 2012/15037-4
Date 2014-04-01
Published in Herpetological Journal. London: British Herpetol Soc, v. 24, n. 2, p. 69-77, 2014.
ISSN 0268-0130 (Sherpa/Romeo, impact factor)
Publisher British Herpetol Soc
Extent 69-77
Access rights Closed access
Type Article
Web of Science ID WOS:000339470800001
URI http://repositorio.unifesp.br/11600/43785

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