La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Recent speciation and elevated Z-chromosome differentiation between sexually monochromatic and dichromatic species of Australian teals
Auteurs :	Kirandeep K. Dhami, Auteur ; Leo Joseph, Auteur ; David A. Roshier, Auteur ; Jeffrey L. Peters, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (47(1) JAN 2016)
Article en page(s) :	92-102
Langues:	Anglais
Résumé :	Sex chromosomes potentially have an important role in speciation and often have elevated differentiation between closely related species. In birds, traits associated with male plumage, female mate preference, and hybrid fitness have been linked to the Z-chromosome (females are heterogametic, ZW). We tested for elevated Z-differentiation between two recently diverged species of Australian ducks, the sexually monochromatic grey teal Anas gracilis and the dichromatic chestnut teal A. castanea. Despite prominent morphological differences, these two species are genetically indistinguishable at both mitochondrial DNA (mean phi(ST)

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