A global analysis of viviparity in squamates highlights its prevalence in cold climates

Anna Zimin, Sean Zimin, Richard Shine, Luciano Avila, Aaron Bauer, Monika Böhm, Rafe Brown, Goni Barki, Gabriel Henrique De Oliveira Caetano, Fernando-Castro Herrera, David Chapple, Laurent Chirio, Guarino Colli, Tiffany Doan, Frank Glaw, L. Lee Grismer, Yuval Itescu, Fred Kraus, Matthew LeBreton, Marcio Martins, Mariana Morado, Gopal Murali, Zoltán Nagy, Maria Novosolov, Paul Oliver … & Shai Meiri
Aim: Viviparity has evolved more times in squamates than in any other vertebrate group. Therefore, squamates offer an excellent model system to study the patterns, drivers, and implications of reproductive mode evolution. Based on current species distributions we examined three selective forces hypothesized to drive squamate viviparity evolution: (1) cold climate, (2) variable climate, and (3) hypoxic conditions, and tested whether viviparity is associated with larger body size. Location: Global. Time period: present day. Taxon:...

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  • University of Kansas
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  • Pontificia Universidad Católica del Ecuador
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