A mitochondrial phylogeographic scenario for the most widespread African rodent, Mastomys natalensis

Paolo Colangelo 1 Erik Verheyen 2 Herwig Leirs 3, 4 Caroline Tatard 5 Christiane Denys 6 Gauthier Dobigny 5 Jean-Marc Duplantier 5 Carine Brouat 5 Laurent Granjon 5 Emilie Lecompte 7
1 Department of Biology and Biotechnologies
2 Department Vertebrates
3 Evolutionary Ecology Group
4 Danish Pest Infestation Laboratory, Faculty of Agricultural Sciences, Department of Integrated Pest Management
5 UMR CBGP - Centre de Biologie pour la Gestion des Populations
6 OSEB - Origine, structure et évolution de la biodiversité
7 EDB - Evolution et Diversité Biologique
Abstract : In order to evaluate the contribution of geological, environmental, and climatic changes to the spatial distribution of genetic variation of Mastomys natalensis, we analysed cytochrome b sequences from the whole distribution area of the species to infer its phylogeographic structure and historical demography. Six well-supported phylogroups, differentiated during the Pleistocene, were evidenced. No significant correlation between genetic and geographic distances was found at the continental scale, and the geographic distributions of the observed phylogroups have resulted from extensive periods of isolation caused by the presence of putative geographic and ecological barriers. The diversification events were probably influenced by habitat contraction/expansion cycles that may have complemented topographic barriers to induce genetic drift and lineage sorting.According to our results, we propose a scenario where climate-driven processes may have played a primary role in the differentiation among phylogroups.
Keywords : African savannah climate change geographic barrier isolation by distance vicariance
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https://hal.archives-ouvertes.fr/hal-00939819
Contributeur : Archive Ouverte Prodinra <>
Soumis le : jeudi 30 janvier 2014 - 22:48:01
Dernière modification le : lundi 23 décembre 2019 - 11:04:19

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Paolo Colangelo, Erik Verheyen, Herwig Leirs, Caroline Tatard, Christiane Denys, et al.. A mitochondrial phylogeographic scenario for the most widespread African rodent, Mastomys natalensis. Biological Journal of the Linnean Society, Linnean Society of London, 2013, 108 (4), pp.901-916. ⟨10.1111/bij.12013⟩. ⟨hal-00939819⟩

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