Do riverine barriers, history or introgression shape the genetic structuring of a common shrew (Sorex araneus) population?

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Type
Article: article from journal or magazin.
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Publications
Institution
Title
Do riverine barriers, history or introgression shape the genetic structuring of a common shrew (Sorex araneus) population?
Journal
Heredity
Author(s)
Lugon-Moulin N., Brunner H., Balloux F., Hausser J., Goudet J.
ISSN
1365-2540[electronic], 0018-067X[linking]
Publication state
Published
Issued date
1999
Volume
83
Number
2
Pages
155-161
Language
english
Abstract
The common shrew (Sorex araneus) is subdivided into numerous chromosome races. The Valais and Cordon chromosome races meet and hybridize at a mountain river in Les Houches (French Alps). Significant genetic structuring was recently reported among populations found on the Valais side of this hybrid zone. In this paper, a phylogenetic analysis and partial Mantel tests are used to investigate the patterns and causes of this structuring. A total of 185 shrews were trapped at 12 localities. All individuals were typed for nine microsatellite loci. Although several mountain rivers are found in the study area, riverine barriers do not have a significant influence on gene flow. Partial Mantel tests show that our result is caused by the influence of the hybrid zone with the Cordon race. The geographical patterns of this structuring are discussed in the context of the contact zone, which appears to extend up to a group of two rivers. The glacier they originate from is known to have cut the Arve valley as recently as 1818. The recent history of this glacier, its moraine and possibly rivers, may therefore be linked to the history of this hybrid zone.
Keywords
genetic differentiation, hybrid zone, microsatellites, partial Mantel tests, phylogenetic analysis, Sorex araneus
Pubmed
Web of science
Open Access
Yes
Create date
24/01/2008 17:10
Last modification date
20/08/2019 15:14
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