Reproductive cycles of two island pitvipers species (Serpentes, Viperidae) determined by ultrasonography and radiography-Reference-Cited by-同舟云学术

Reproductive cycles of two island pitvipers species (Serpentes, Viperidae) determined by ultrasonography and radiography

Published:2024-04-02 Issue:3 Volume:53 Page:
ISSN:0340-2096
Container-title:Anatomia, Histologia, Embryologia
language:en
Short-container-title:Anat Histol Embryol

Author:

Garcia Viviane Campos¹²^ORCID,Almeida‐Santos Selma Maria¹²^ORCID

Affiliation:

1. Programa de Pós‐graduação em Anatomia dos Animais Domésticos e Silvestres, Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia Universidade de São Paulo São Paulo São Paulo Brazil

2. Laboratório de Ecologia e Evolução Instituto Butantan São Paulo São Paulo Brazil

Abstract

AbstractWe used ultrasonography and radiography to assess the sexual organs and characterize the reproductive cycle of captive golden lancehead (Bothrops insularis) and Alcatrazes lancehead (B. alcatraz), two endangered island snake species in Brazil. We assessed 46‐ individuals of golden lancehead and 12 of Alcatrazes lancehead kept in captivity between 2014 and 2020. Follicular development was similar between species, but follicles in Alcatrazes lancehead were smaller than in the golden lanceheads. Female golden lanceheads produced 24 live young, seven stillborn and 73 undeveloped eggs. Parturition of live young occurred between midsummer (February) and early autumn and gestation averaged 8 months. Female Alcatrazes lanceheads produced four live young in midsummer, and one undeveloped egg in early autumn. Males and females of both species have seasonal and biennial reproductive cycles. Sperm storage in both sexes is essential to coordinate male and female cycles. The data obtained with golden lancehead and Alcatrazes lancehead in captivity, demonstrate a degree of conservatism, following data from other Bothrops.

Funder

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Publisher

Wiley

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1111/ahe.13038

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