Chromosomal Versus Mitochondrial-Dna Evolution - Tracking The Evolutionary History Of The Southwestern European Populations Of The Sorex-Araneus Group (Mammalia, Insectivora) - Laboratoire d'écologie alpine Accéder directement au contenu
Article Dans Une Revue Evolution - International Journal of Organic Evolution Année : 1994

Chromosomal Versus Mitochondrial-Dna Evolution - Tracking The Evolutionary History Of The Southwestern European Populations Of The Sorex-Araneus Group (Mammalia, Insectivora)

Résumé

The shrews of the Sorer araneus group have undergone a spectacular chromosome evolution. The karyotype of Sorer granarius is generally considered ancestral to those of Sorer coronatus and S. araneus. However, a sequence of 777 base pairs of the cytochrome b gene of the mitochondrial DNA (mtDNA) produces a quite different picture: S. granarius is closely related to the populations of S. araneus from the Pyrenees and from the northwestern Alps, whereas S. coronatus and S. araneus from Italy and the southern Alps represent two well-separated lineages. It is suggested that mtDNA and chromosomal evolution are in this case largely independant processes. Whereas mtDNA haplotypes are closely linked to the geographical history of the populations, chromosomal mutations were probably transmitted from one population to another. Available data suggest that the impressive chromosome polymorphism of this group is quite a recent phenomenon.
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halsde-00281058 , version 1 (20-05-2008)

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  • HAL Id : halsde-00281058 , version 1

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P. Taberlet, L. Fumagalli, J. Hausser. Chromosomal Versus Mitochondrial-Dna Evolution - Tracking The Evolutionary History Of The Southwestern European Populations Of The Sorex-Araneus Group (Mammalia, Insectivora). Evolution - International Journal of Organic Evolution, 1994, 48 (3), pp.623-636. ⟨halsde-00281058⟩
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