La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Ecological, social, and genetic contingency of extrapair behavior in a socially monogamous bird
Auteurs :	Erin R. Lindstedt, Auteur ; Kevin P. Oh, Auteur ; Alexander V. Badyaev, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (38(2) MAR 2007)
Article en page(s) :	214-223
Langues:	Anglais
Résumé :	Extrapair mating strategies are common among socially monogamous birds, but vary widely across ecological and social contexts in which breeding occurs. This variation is thought to reflect a compromise between the direct costs of mates' extrapair behavior and indirect benefits of extrapair fertilizations (EPF) to offspring fitness. However, in most free-living populations, the complete spatial and temporal distribution of mating attempts, genetic characteristics of available mates, and their relative contribution to EPF strategies are difficult to assess. Here we examined prevalence of EPF in relation to breeding density, synchrony, and genetic variability of available mates in a wild population of house finches Carpodacus mexicanus where all breeding attempts are known and all offspring are genotyped. We found that 15% of

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...