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Postglacial recolonization in a cold climate specialist in western Europe: patterns of genetic diversity in the adder (; Vipera berus; ) support the central–marginal hypothesis

Ursenbacher, Sylvain and Guillon, Michaël and Cubizolle, Hervé and Dupoué, Andréaz and Blouin-Demers, Gabriel and Lourdais, Olivier. (2015) Postglacial recolonization in a cold climate specialist in western Europe: patterns of genetic diversity in the adder (; Vipera berus; ) support the central–marginal hypothesis. Molecular ecology, 24 (14). pp. 3639-3651.

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Official URL: http://edoc.unibas.ch/41518/

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Abstract

Understanding the impact of postglacial recolonization on genetic diversity is essential in explaining current patterns of genetic variation. The central–marginal hypothesis (CMH) predicts a reduction in genetic diversity from the core of the distribution to peripheral populations, as well as reduced connectivity between peripheral popula- tions. While the CMH has received considerable empirical support, its broad applica- bility is still debated and alternative hypotheses predict different spatial patterns of genetic diversity. Using microsatellite markers, we analysed the genetic diversity of the adder (Vipera berus) in western Europe to reconstruct postglacial recolonization. Approximate Bayesian Computation (ABC) analyses suggested a postglacial recoloniza- tion from two routes: a western route from the Atlantic Coast up to Belgium and a cen- tral route from the Massif Central to the Alps. This cold-adapted species likely used two isolated glacial refugia in southern France, in permafrost-free areas during the last glacial maximum. Adder populations further from putative glacial refugia had lower genetic diversity and reduced connectivity; therefore, our results support the predic- tions of the CMH. Our study also illustrates the utility of highly variable nuclear markers, such as microsatellites, and ABC to test competing recolonization hypotheses.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Integrative Biologie > Naturschutzbiologie (Baur)
UniBasel Contributors:Ursenbacher, Sylvain
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Blackwell
ISSN:0962-1083
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:27 May 2020 08:27
Deposited On:30 Aug 2016 09:27

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