La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Hybridization between sister taxa versus non-sister taxa: a case study in birds (2013)
Auteurs :	Ali Gholamhosseini, Auteur ; Michalis Vardakis, Auteur ; Mansour Aliabadian, Auteur ; Vincent Nijman, Auteur ; Ronald Vonk, Auteur
Type de document :	Article
Dans :	Bird Study (60(2) MAY 1 2013)
Article en page(s) :	195-201
Langues:	Anglais
Résumé :	CapsuleSister taxa hybridize more frequently than non-sister taxa. AimsTo test whether the frequency of hybridization is higher in avian sister species than in non-sister species, based on molecular phylogenetic relationships and reports of hybridizing bird species globally. MethodsA literature based survey of hybridizing bird species was conducted on genera that: (1) have a completely known phylogenetic molecular tree for at least 90% of the total number of species, (2) have at least four species, (3) have an incidence of hybridization more than 25% recorded from the wild, and (4) have at least two pairs of hybridizing species. The frequency of hybridization for avian sister species was compared to that of non-sister species. ResultsTwenty-nine genera were identified that met our four selection criteria. In 25 genera, sister species hybridized more than non-sister species (mean frequencies of 0.520.35 versus 0.16 +/- 0.13). ConclusionThe frequency of hybridization within sister species was found to be higher than within non-sister species.

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