A hybrid zone with coincident clines for autosomal and sex-specific markers in the Sorex araneus group.

Détails

ID Serval
serval:BIB_67C3FBB90DAA
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A hybrid zone with coincident clines for autosomal and sex-specific markers in the Sorex araneus group.
Périodique
Journal of Evolutionary Biology
Auteur(s)
Yannic G., Basset P., Hausser J.
ISSN
1420-9101 (Electronic)
ISSN-L
1010-061X
Statut éditorial
Publié
Date de publication
2008
Volume
21
Numéro
3
Pages
658-667
Langue
anglais
Résumé
In hybrid zones, endogenous counter-selection of hybrids is usually first expressed as reduced fertility or viability in hybrids of the heterogametic sex, a mechanism known as Haldane's rule. This phenomenon often leads to a differential of gene flow between sex-linked markers. Here, we address the possibility of a differential gene flow for Y chromosome, mtDNA and autosomal markers across the hybrid zone between the genetically and chromosomally well-differentiated species Sorex antinorii and Sorex araneus race Vaud. Intermarker comparison clearly revealed coincidental centre and very abrupt clines for all three types of markers. The overall level of genetic differentiation between the two species must be strong enough to hinder asymmetric introgression. Cyto-nuclear mismatches were also observed in the centre of hybrid zone. The significantly lower number of mismatches observed in males than in females possibly results from Y chromosome-mtDNA interactions. Results are compared with those previously reported in another hybrid zone between S. antinori and S. araneus race Cordon.
Mots-clé
Animals, DNA, Mitochondrial/genetics, Female, Gene Flow/genetics, Genetic Markers/genetics, Genetic Speciation, Hybridization, Genetic, Karyotyping, Male, Selection, Genetic, Sex Characteristics, Shrews/classification, Shrews/genetics, Y Chromosome/genetics
Pubmed
Web of science
Open Access
Oui
Création de la notice
10/06/2008 17:27
Dernière modification de la notice
20/08/2019 15:23
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