Abstract
Tropidodryas serra is an endemic snake from the Brazilian Atlantic Forest and despite its wide distribution, little is known about its ecology. Tropidodryas serra is an oviparous snake, but there are few available data on its reproductive cycle. In this paper, we present the first report of oviposition of T. serra in captivity with successfully hatching. A pregnant female was captured in the area of Non-Governmental Organization (NGO) Dacnis Project, Ubatuba-SP, southeastern Brazil, and held captive. The spawning of 7 eggs and the development of offspring were observed. The eggs (measuring 4x1.35 cm in average) hatched in 90 days, with 6 healthy neonates and 1 stillborn. Based on a unique successful hatching of T. serra eggs in captivity, the present study confirmed with naturalistic data reproductive characteristics of the species, such as egg laying in December and low number of atresic eggs, corroborating that the species should present few reproductive events and concentrated throughout the rainy season.
Highlights
Estabelecer estratégias de conservação, principalmente de espécies ameaçadas de extinção (Shine e Bonnet, 2009)
O evento do rompimento da membrana externa do ovo até a total saída do juvenil (Figura 1A) durou duas horas
A postura dos ovos em dezembro (presente trabalho), com um baixo número de ovos atrésicos, corrobora que T. serra apresenta poucos eventos reprodutivos e concentrados ao longo da temporada de chuva, onde as fêmeas apresentam ovários inativos ao longo da maior parte do ano e a vitelogênese ocorre entre o final da estação seca e metade da estação chuvosa (Stender-Oliveira et al, 2016)
Summary
Tropidodryas serra ocorre entre os estados do Espírito Santo e Santa Catarina e, apesar de apresentar uma ampla distribuição, pouco é conhecido sobre sua ecologia (Stender-Oliveira et al, 2016). Neste trabalho, apresentamos o primeiro relato de oviposição de T. serra em cativeiro com sucesso na eclosão dos filhotes.
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