Systematics of snow voles (Chionomys, Arvicolinae) revisited

To elucidate the evolutionary history of snow voles, genus Chionomys, we studied the phylogeography of Chionomysnivalis across its range and investigated its relationships with two congeneric species, Chionomysgud and Chionomysroberti, using independent molecular markers. Analyses were based on mitochondrial (∼940 bp cyt b) and Y-chromosomal (∼2020 bp from three introns) genetic variation. Our data provide conclusive evidence for a Caucasian and Middle Eastern origin for the three species and a subsequent westward expansion of C.nivalis. In addition, we discuss the taxonomic status of the genus Chionomys in relation to the genus Microtus.

Figure optionsDownload as PowerPoint slideHighlights
► We studied the phylogeography of Chionomysnivalis over its entire range.
► We investigated the relationships of Chionomysnivalis with Chionomysgud and Chionomysroberti.
► We analysed 940 bp mtDNA cyt b and 2020 bp from three Y-chromosome introns.
► The data provide conclusive evidence for a Caucasian and Middle Eastern origin of the three species.