La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	No evidence of genetic benefits from extra-pair fertilisations in female sand martins (Riparia riparia)
Auteurs :	Jakob Augustin, Auteur ; Donald Blomqvist, Auteur ; Tibor Szép, Auteur ; Zoltan D. Szabo, Auteur ; Richard H. Wagner, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (148(2) APR 2007)
Article en page(s) :	189-198
Langues:	Anglais
Résumé :	Genetic parentage studies of socially monogamous birds reveal a widespread prevalence of extra-pair paternity. Variation in extra-pair paternity among individuals may depend on how different individuals benefit from extra-pair fertilisations and on the opportunity to pursue extra-pair copulations. A long-term study of sand martins (Riparia riparia) in Hungary allowed us to examine patterns of extra-pair fertilisations in a large colony of over 3,000 breeding pairs with many known age individuals. We used multi-locus DNA fingerprinting to determine whether extra-pair fertilisations occur when females are paired to (1) presumably low quality mates, or (2) genetically similar or dissimilar mates, and whether extra-pair fertilisations result in offspring of higher quality. Extra-paternal young were found in 38% of

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