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Vipers on the Scene: Assessing the Relationship Between Speciation and Climatic Niche Evolution in Venomous Snakes (Reptilia: Viperidae)

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Abstract

Evolutionary radiations have been a key paradigm in studying species richness and their temporal and geographic variation. These patterns have been associated with the interaction between the rate at which species originate and the rate at which phenotypic traits evolve. Nevertheless, despite extensive empirical testing, questions remain regarding the prevalence of the coupling between these rates within lineages. Climatic niche evolution is an important driver of speciation since niche divergence and niche conservatism may result in reproductive isolation. Here, we test whether the rate of climatic niche evolution influences the speciation rate for a globally distributed venomous snakes’ clade, the Viperidae family. Contrary to expectations, we found no general relationship between climatic niche evolution rates and vipers’ speciation rates. Our results showed that speciation during the radiation of vipers could have occurred without strong ecological niche divergence, perhaps through a non-adaptive process that could still include a complex pattern of iterated adaptive and non-adaptive radiations.

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Acknowledgements

CEEE thanks the Doctoral Program of the Instituto de Ecología, A.C. (INECOL) and the support of the Consejo Nacional de Ciencia y Tecnología (CONACYT, México) for providing a scholarship (number 635993).

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CEEE and FV conceived and designed the study; CEEE collected and analyzed the data; CEEE led the writing with inputs from all authors. All authors contributed critically to the drafts and gave final approval for publication.

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Correspondence to Citlalli Edith Esparza-Estrada or Fabricio Villalobos.

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The authors declare no competing interests.

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Esparza-Estrada, C.E., Alencar, L.R., Terribile, L.C. et al. Vipers on the Scene: Assessing the Relationship Between Speciation and Climatic Niche Evolution in Venomous Snakes (Reptilia: Viperidae). Evol Biol 50, 264–273 (2023). https://doi.org/10.1007/s11692-023-09604-5

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  • DOI: https://doi.org/10.1007/s11692-023-09604-5

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