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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Plio-Pleistocene history of West African Sudanian savanna and the phylogeography of the Praomys daltoni complex (Rodentia): The environment/geography/genetic interplay
Molecular Ecology, Volume 19, No. 21, Year 2010
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Description
Rodents of the Praomys daltoni complex are typical inhabitants of the Sudanian savanna ecosystem in western Africa and represent a suitable model for testing the effects of Quaternary climatic oscillations on extant genetic variation patterns. Phylogeographical analyses of mitochondrial DNA sequences (cytochrome b) across the distribution range of the complex revealed several well-defined clades that do not support the division of the clade into the two species currently recognized on the basis of morphology, i.e. P.daltoni (Thomas, 1892) and Praomys derooi (Van der Straeten & Verheyen 1978). The observed genetic structure fits the refuge hypothesis, suggesting that only a small number of populations repeatedly survived in distinct forest-savanna mosaic blocks during the arid phases of the Pleistocene, and then expanded again during moister periods. West African rivers may also have contributed to genetic differentiation, especially by forming barriers after secondary contact of expanding populations. The combination of three types of genetic markers (mtDNA sequences, microsatellite loci, cytogenetic data) provides evidence for the presence of up to three lineages, which most probably represent distinct biological species. Furthermore, incongruence between nuclear and mtDNA markers in some individuals unambiguously points towards a past introgression event. Our results highlight the importance of combining different molecular markers for an accurate interpretation of genetic data. © 2010 Blackwell Publishing Ltd.
Authors & Co-Authors
Bryja, Josef
Czech Republic, Brno
Institute of Vertebrate Biology of the Academy of Sciences of the Czech Republic
Granjon, Laurent
France, Montpellier
Inrae's Occitanie-montpellier Centre
France, Paris
Cirad
Dobigny, Gauthier
France, Montpellier
Inrae's Occitanie-montpellier Centre
Niger, Niamey
Centre Régional Agrhymet
Patzenhauerová, Hana
Czech Republic, Brno
Institute of Vertebrate Biology of the Academy of Sciences of the Czech Republic
Konečný, Adam
Czech Republic, Brno
Institute of Vertebrate Biology of the Academy of Sciences of the Czech Republic
France, Montpellier
Inrae's Occitanie-montpellier Centre
Duplantier, Jean Marc
France, Montpellier
Inrae's Occitanie-montpellier Centre
Gauthier, Philippe
France, Montpellier
Inrae's Occitanie-montpellier Centre
Colyn, Marc M.
France, Rennes
Écosystèmes, Biodiversité, Évolution
Durnez, Lies
Belgium, Antwerpen
Universiteit Antwerpen
Belgium, Antwerpen
Prins Leopold Instituut Voor Tropische Geneeskunde
Lalis, Aude
France, Paris
Museum National D'histoire Naturelle
Nicolas, Violaine
France, Paris
Museum National D'histoire Naturelle
Statistics
Citations: 56
Authors: 11
Affiliations: 8
Identifiers
Doi:
10.1111/j.1365-294X.2010.04847.x
ISSN:
09621083
e-ISSN:
1365294X
Research Areas
Cancer
Environmental
Genetics And Genomics