A relict bank vole lineage highlights the biogeographic history of the Pyrenean region in Europe
- 22 May 2009
- journal article
- research article
- Published by Wiley in Molecular Ecology
- Vol. 18 (11), 2489-2502
- https://doi.org/10.1111/j.1365-294x.2009.04162.x
Abstract
The Pyrenean region exhibits high levels of endemism suggesting a major contribution to the phylogeography of European species. But, to date, the role of the Pyrenees and surrounding areas as a glacial refugium for temperate species remains poorly explored. In the current study, we investigated the biogeographic role of the Pyrenean region through the analyses of genetic polymorphism and morphology of a typical forest-dwelling small mammal, the bank vole (Myodes glareolus). Analyses of the mitochondrial cytochrome b gene and the third upper molar (M3) show a complex phylogeographic structure in the Pyrenean region with at least three distinct lineages: the Western European, Spanish and Basque lineages. The Basque lineage in the northwestern (NW) Pyrenees was identified as a new clearly differentiated and geographically localized bank vole lineage in Europe. The average M3 shape of Basque bank voles suggests morphological differentiation but also restricted genetic exchanges with other populations. Our genetic and morphological results as well as palaeo-environmental and fossils records support the hypothesis of a new glacial refugium in Europe situated in the NW Pyrenees. The permissive microclimatic conditions that prevailed for a long time in this region may have allowed the survival of temperate species, including humans. Moreover, local differentiation around the Pyrenees is favoured by the opportunity for populations to track the shift of the vegetation belt in altitude rather than in latitude. The finding of the Basque lineage is in agreement with the high level of endemic taxa reported in the NW Pyrenees.Keywords
This publication has 74 references indexed in Scilit:
- Range-wide phylogeography of Juniperus thurifera L., a presumptive keystone species of western Mediterranean vegetation during cold stages of the PleistoceneMolecular Phylogenetics and Evolution, 2008
- A northern glacial refugium for bank voles ( Clethrionomys glareolus )Proceedings of the National Academy of Sciences, 2006
- An unusual phylogeography in the bushcricket Ephippiger ephippiger from Southern FranceHeredity, 2006
- A new Puumala hantavirus subtype in rodents associated with an outbreak of Nephropathia epidemica in South-East Germany in 2004Epidemiology and Infection, 2006
- A highly divergent mitochondrial DNA lineage of Microtus agrestis in southern EuropeHeredity, 2003
- On Steiner trees and minimum spanning trees in hypergraphsOperations Research Letters, 2003
- CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choiceNucleic Acids Research, 1994
- Adaptive protein evolution at the Adh locus in DrosophilaNature, 1991
- Variabilité de la troisième molaire supérieure de Clethrionomys glareolus (Arvicolidae, Rodentia) et sa signification évolutiveMammalia, 1987
- Evolutionary trees from DNA sequences: A maximum likelihood approachJournal of Molecular Evolution, 1981