Section: Evolutionary Biology
Topic: Evolution, Genetics/Genomics, Population biology

Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids

10.24072/pcjournal.345 - Peer Community Journal, Volume 3 (2023), article no. e111.

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Conspicuous body colours and colour polymorphism have been hypothesized to increase rates of speciation. Conspicuous colours are evolutionary labile, and often involved in intraspecific sexual signalling and thus may provide a raw material from which reproductive isolation can easily evolve, while polymorphism could favour rapid evolution of new lineages through morphic speciation. Here, we investigated the influence of the presence/absence of conspicuous colourations, and of colour polymorphism on the speciation of Lacertids. We used several state-dependent diversification models, and showed that, regardless of the methods, conspicuous colourations and colour polymorphism were not related to species speciation. While the lack of correlation between conspicuous colourations and speciation rates is in line with most of the literature testing this hypothesis, the results for colour polymorphism contradict previous studies, and question the generality of the morphic speciation hypothesis. 

Published online:
DOI: 10.24072/pcjournal.345
Type: Research article
Keywords: colouration, sexual selection, polymorphism, speciation, reptiles
de Solan, Thomas 1; Sinervo, Barry 2; Geniez, Philippe 3; David, Patrice 1; Crochet, Pierre-André 1

1 CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
2 Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA, United States of America
3 CEFE, Univ Montpellier, CNRS, EPHE-PSL, IRD, Biogéographie et Ecologie des Vertébrés, Montpellier, France
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
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de Solan, Thomas; Sinervo, Barry; Geniez, Philippe; David, Patrice; Crochet, Pierre-André. Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids. Peer Community Journal, Volume 3 (2023), article  no. e111. doi : 10.24072/pcjournal.345. https://peercommunityjournal.org/articles/10.24072/pcjournal.345/

Peer reviewed and recommended by PCI : 10.24072/pci.evolbiol.100650

Conflict of interest of the recommender and peer reviewers:
The recommender in charge of the evaluation of the article and the reviewers declared that they have no conflict of interest (as defined in the code of conduct of PCI) with the authors or with the content of the article.

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