La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Rhodopechys obsoleta (desert finch): a pale ancestor of greenfinches (Carduelis spp.) according to molecular phylogeny
Auteurs :	Jorge Zamora, Auteur ; Lowy Ernesto, Auteur ; Valentin Ruiz-del-Valle, Auteur ; Juan Moscoso, Auteur ; Juan Ignacio Serrano-Vela, Auteur ; Juan Rivero-de-Aguilar, Auteur ; Antonio Arnaiz-Villena, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (147(3) JUL 2006)
Article en page(s) :	448-456
Langues:	Anglais
Résumé :	The evolutionary history of three out of four birds traditionally classified into the genus Rhodopechys birds has been studied by comparing their mitochondrial cytochrome b DNA sequence with that of greenfinches and other genus Carduelis finches. The desert finch (Rhodopechys obsoleta) or a sister extinct species seems to have existed about 6 million years ago in Asian and perhaps African desert-like areas. This bird has no molecular relationship with other Rhodopechys birds and seems to have given rise to the greenfinches radiation, probably by allopatry of marginal or isolated groups; the latter would have evolved to green plumage colours and more simple song modulations (i.e., greenfinches). The possible role of assortative mating and the newly postulated acquired phenotypic characters in greenfinches speciation are discussed.

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