10.5061/DRYAD.KD51C5B6M
Zimin, Anna
0000-0001-6210-6976
Tel Aviv University
Zimin, Sean
Ben-Gurion University of the Negev
Shine, Richard
Macquarie University
Avila, Luciano
Instituto Patagónico para el Estudio de los Ecosistemas Continentales,
Consejo Nacional de Investigaciones Científicas y Técnicas
(IPEEC-CONICET)
Bauer, Aaron
Villanova University
Böhm, Monika
Global Center for Species Survival, Indianapolis Zoological Society
Brown, Rafe
University of Kansas
Barki, Goni
Ben-Gurion University of the Negev
de Oliveira Caetano, Gabriel Henrique
Ben-Gurion University of the Negev
Herrera, Fernando-Castro
Universidad del Valle
Chapple, David
Monash University
Chirio, Laurent
National Museum of Natural History
Colli, Guarino
University of Brasília
Doan, Tiffany
New College of Florida
Glaw, Frank
Bavarian State Collection of Zoology
Grismer, L. Lee
La Sierra University
Itescu, Yuval
Leibniz Institute of Freshwater Ecology and Inland Fisheries
Kraus, Fred
University of Michigan-Ann Arbor
LeBreton, Matthew
Mosaic
Martins, Marcio
University of Sao Paulo
Morado, Mariana
Instituto Patagónico para el Estudio de los Ecosistemas Continentales,
Consejo Nacional de Investigaciones Científicas y Técnicas
(IPEEC-CONICET)
Murali, Gopal
Ben-Gurion University of the Negev
Nagy, Zoltán
,
Novosolov, Maria
University of Copenhagen
Oliver, Paul
Queensland Museum
Passos, Paulo
Universidade Federal do Rio de Janeiro Museu Nacional
Pauwels, Olivier
Royal Belgian Institute of Natural Sciences
Pincheira-Donoso, Daniel
Royal Belgian Institute of Natural Sciences
Ribeiro-Junior, Marco-Antonio
Tel Aviv University
Shea, Glenn
University of Sydney
Tingley, Reid
Monash University
Torres-Carvajal, Omar
Pontificia Universidad Católica del Ecuador
Trape, Jean-François
Institut de Recherche pour le Développement
Uetz, Peter
Virginia Commonwealth University
Wagner, Philipp
Allwetterzoo
Roll, Uri
Ben-Gurion University of the Negev
Meiri, Shai
Tel Aviv University
A global analysis of viviparity in squamates highlights its prevalence in
cold climates
Dryad
dataset
2022
Biogeography
Body size
Climatic variability
cold climate
elevation
global analysis
reproduction
structural equation modelling
Squamates
Viviparity
FOS: Biological sciences
Israel Science Foundation
https://ror.org/04sazxf24
ISF-406/19
2022-10-04T00:00:00Z
2022-10-04T00:00:00Z
en
https://doi.org/10.1111/geb.13598
https://doi.org/10.5281/zenodo.7092879
9413313 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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: Squamata. Methods: We compiled a dataset
of 9,061 squamate species including their distributions, elevation,
climate, body mass, and reproductive modes. We applied species-level and
assemblage-level approaches for predicting reproductive mode, globally and
within biogeographical realms. We tested the relationships of temperature,
interannual and intra-annual climatic variation, elevation (as a proxy for
hypoxic conditions), and body mass with reproductive mode, employing path
analyses to account for correlations among the environmental predictors.
Results: Viviparity was strongly associated with cold climates at both
species and assemblage levels, despite the prevalence of viviparity in
some warm climates. Viviparity was not clearly correlated with climatic
variability or elevation. The probability of being viviparous was weakly
positively correlated with body size. Conclusions: Although phylogenetic
history is important, potentially explaining the occurrence of viviparous
species in presently warm regions, current global squamate distribution is
characterized by a higher relative abundance of viviparity in cold
environments – supporting the prediction of the ‘cold-climate’ hypothesis.
The roles of climatic variation and of hypoxia are less important and not
straightforward. Elevation probably exerts various selective pressures and
influences the prevalence of viviparity primarily through its effect on
temperature rather than on oxygen concentration.
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