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Genetic variation in field voles (Microtus agrestis) from the British Isles: selective sweeps or population bottlenecks?
Natl Museums Scotland, Scotland.
Polish Acad Sci, Poland.
Univ Porto, Portugal.
Linköping University, Department of Clinical and Experimental Medicine, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences.
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2019 (English)In: Biological Journal of the Linnean Society, ISSN 0024-4066, E-ISSN 1095-8312, Vol. 126, no 4, p. 852-865Article in journal (Refereed) Published
Abstract [en]

The Eurasian field vole (Microtus agrestis) comprises three evolutionarily significant units (ESUs). The northern ESU is found at higher latitudes across the western Palaearctic region and includes six, largely allopatric, mitochondrial DNA lineages that were derived from population bottlenecks. One of these lineages is found in southern Britain and nearby areas of continental Europe. A prominent sub-lineage is nested within, and therefore derived from, the part of this lineage occupying southern Britain. The sub-lineage consists of an abundant central haplotype together with a series of closely related haplotypes, a distribution that would result from either a recent population bottleneck or a selective sweep. To distinguish between these, we sequenced a Y-chromosome marker in 167 field voles from Britain and Europe, and analysed a panel of 13 autosomal microsatellite loci in 144 field voles from eight populations in Britain. The Y-chromosome marker showed a continental-scale pattern of variation that was not aligned with that of the mitochondrial marker, while microsatellite variation did not show any evidence for a bottleneck, tentatively favouring selection instead. This implies a role for both stochastic and selective processes in generating phylogeographical patterns at different scales in the field vole.

Place, publisher, year, edition, pages
OXFORD UNIV PRESS , 2019. Vol. 126, no 4, p. 852-865
Keywords [en]
cytochrome b; microsatellite; population bottleneck; post-glacial colonization; selection; Y-chromosome
National Category
Evolutionary Biology
Identifiers
URN: urn:nbn:se:liu:diva-157242DOI: 10.1093/biolinnean/bly213ISI: 000464933800015OAI: oai:DiVA.org:liu-157242DiVA, id: diva2:1324198
Note

Funding Agencies|National Science Centre in Poland [UMO-2013/09/N/NZ8/03205]

Available from: 2019-06-13 Created: 2019-06-13 Last updated: 2019-06-13

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Jaarola, Maarit
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Center for Social and Affective NeuroscienceFaculty of Medicine and Health Sciences
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