Chromosomal rearrangements and genetic structure at different evolutionary levels of the Sorex araneus group.

Détails

ID Serval
serval:BIB_617E0725310F
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Chromosomal rearrangements and genetic structure at different evolutionary levels of the Sorex araneus group.
Périodique
Journal of Evolutionary Biology
Auteur(s)
Basset P., Yannic G., Hausser J.
ISSN
1420-9101 (Electronic)
ISSN-L
1010-061X
Statut éditorial
Publié
Date de publication
2008
Volume
21
Numéro
3
Pages
842-852
Langue
anglais
Résumé
Robertsonian (Rb) fusions received large theoretical support for their role in speciation, but empirical evidence is often lacking. Here, we address the role of Rb rearrangements on the genetic differentiation of the karyotypically diversified group of shrews, Sorex araneus. We compared genetic structure between 'rearranged' and 'common' chromosomes in pairwise comparisons of five karyotypic taxa of the group. Considering all possible comparisons, we found a significantly greater differentiation at rearranged chromosomes, supporting the role of chromosomal rearrangements in the general genetic diversification of this group. Intertaxa structure and distance were larger across rearranged chromosomes for most of the comparisons, although these differences were not significant. This last result could be explained by the large variance observed among microsatellite-based estimates. The differences observed among the pairs of taxa analysed support the role of both the hybrid karyotypic complexity and the level of evolutionary divergence.
Mots-clé
Animals, Biological Evolution, Chromosomes/genetics, Genetic Variation, Karyotyping, Microsatellite Repeats, Shrews/genetics
Pubmed
Web of science
Création de la notice
05/12/2008 10:16
Dernière modification de la notice
20/08/2019 14:18
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