La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Rare extra-pair fertilizations in the semi-colonially breeding linnet Carduelis cannabina
Auteurs :	J. Bonlokke-Pedersen, Auteur ; J. Drachmann, Auteur ; J. Frydenberg, Auteur ; J. J. Boomsma, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (33(2) JUN 2002)
Article en page(s) :	203-206
Langues:	Anglais
Résumé :	Microsatellite analysis was used to analyse the level of extra-pair paternity (EPP) in the semi-colonially breeding linnet Carduelis cannabina in Denmark. During the breeding seasons of 1998 and 1999 EPP accounted for only 3.8% of young (4/106, 95% CL = 1-13%). These extra-pair young were found in 9.1% of the broods (2/22, 95% CL = 1-29%). We hypothesize that this low level of EPP is due to an efficient use of both mate guarding and frequent copulations as paternity guards. However, experimental tests with temporary detainment of males would be needed to establish whether there is a causal relationship between the low EPP level and the double paternity guard.

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