Inferring phylogenetic structure, taxa hybridization, and divergence times within rock voles of subgenus Aschizomys (Cricetidae: Alticola ) using quaddRAD sequencing and a cytb dataset.

Autor: Dvoyashov IA; Zoological Institute Russian Academy of Sciences Saint Petersburg Russia., Bodrov SY; Zoological Institute Russian Academy of Sciences Saint Petersburg Russia., Mamaev NV; Institute for Biological Problems of Cryolithozone Yakutsk Russia., Glagoleva ES; Faculty of Biology Lomonosov Moscow State University Moscow Russia., Abramson NI; Zoological Institute Russian Academy of Sciences Saint Petersburg Russia.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2023 Dec 13; Vol. 13 (12), pp. e10742. Date of Electronic Publication: 2023 Dec 13 (Print Publication: 2023).
DOI: 10.1002/ece3.10742
Abstrakt: The subgenus Aschizomys belongs to the genus Alticola (Central Asian mountain vole) and consists of two species: Alticola macrotis and Alticola lemminus. Phylogenetic relationships within the subgenus Aschizomys remain obscure due to limited sampling, an insufficient number of molecular markers used in phylogenetic studies, and paraphyly observed on mitochondrial trees. In this work, to infer reliable phylogenetic relationships and evaluate putative scenarios of ancient hybridization within the subgenus, we applied double-digest restriction site-associated DNA paired-end (quaddRAD) sequencing to 20 DNA samples (20 individuals), including five species of the genus Alticola , and dated the divergence of cytochrome b ( cytb ) lineages within Aschizomys using a "second calibration" approach. We showed monophyly of the two species on the basis of thousands of nuclear loci and demonstrated traces of introgression also in the nuclear genome. Observed paraphyly in cytb could be explained by an introgression event rather than incomplete lineage sorting. This explanation was confirmed by an analysis of the cytb divergence time. Overall, our results support the hypothesis of extensive migration of the Aschizomys species during the Late Pleistocene, with this migration leading to population divergence and introgression. We expect our article to become a starting point for a series of rigorous studies on the population history of the genus Alticola as a whole.
(© 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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