Speciation rates are unrelated to the formation of population structure in Malagasy gemsnakes.

Autor: Burbrink FT; Department of Herpetology American Museum of Natural History New York City New York USA., Ruane S; Life Sciences Section, Negaunee Integrative Research Center Field Museum of Natural History Chicago Illinois USA., Rabibisoa N; Sciences de la Vie et de l'Environnement, Faculté des Sciences, de Technologies et de l'Environnement Université de Mahajanga Mahajanga Madagascar., Raselimanana AP; Zoologie et Biodiversité Animale, Faculté des Sciences Université d'Antananarivo Antananarivo Madagascar., Raxworthy CJ; Department of Herpetology American Museum of Natural History New York City New York USA., Kuhn A; Department of Herpetology American Museum of Natural History New York City New York USA.; Virginia Museum of Natural History Martinsville Virginia USA.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2023 Jul 28; Vol. 13 (8), pp. e10344. Date of Electronic Publication: 2023 Jul 28 (Print Publication: 2023).
DOI: 10.1002/ece3.10344
Abstrakt: Speciation rates vary substantially across the tree of life. These rates should be linked to the rate at which population structure forms if a continuum between micro and macroevolutionary patterns exists. Previous studies examining the link between speciation rates and the degree of population formation in clades have been shown to be either correlated or uncorrelated depending on the group, but no study has yet examined the relationship between speciation rates and population structure in a young group that is constrained spatially to a single-island system. We examine this correlation in 109 gemsnakes (Pseudoxyrhophiidae) endemic to Madagascar and originating in the early Miocene, which helps control for extinction variation across time and space. We find no relationship between rates of speciation and the formation rates of population structure over space in 33 species of gemsnakes. Rates of speciation show low variation, yet population structure varies widely across species, indicating that speciation rates and population structure are disconnected. We suspect this is largely due to the persistence of some lineages not susceptible to extinction. Importantly, we discuss how delimiting populations versus species may contribute to problems understanding the continuum between shallow and deep evolutionary processes.
Competing Interests: We have no competing interests.
(© 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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