Condition-dependent genetic benefits of extrapair fertilization in female blue tits Cyanistes caeruleus.

Details

Serval ID
serval:BIB_40C30BC56E6D
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Condition-dependent genetic benefits of extrapair fertilization in female blue tits Cyanistes caeruleus.
Journal
Journal of Evolutionary Biology
Author(s)
Dreiss A.N., Silva N., Richard M., Moyen F., Théry M., Møller A.P., Danchin E.
ISSN
1420-9101[electronic], 1010-061X[linking]
Publication state
Published
Issued date
2008
Peer-reviewed
Oui
Volume
21
Number
6
Pages
1814-1822
Language
english
Abstract
In many socially monogamous birds, both partners perform extrapair copulations (EPC). As this behaviour potentially inflicts direct costs on females, they are currently hypothesized to search for genetic benefits for descendants, either as 'good' or 'complementary' genes. Although these hypotheses have found some support, several studies failed to find any beneficial consequence of EPC, and whether this behaviour is adaptive to females is subject to discussion. Here, we test these two hypotheses in a natural population of blue tits by accounting for the effect of most parameters known to potentially affect extrapair fertilization. Results suggest that female body mass affected the type of extrapair genetic benefits obtained. Heavy females obtained extrapair fertilizations when their social male was of low quality (as reflected by sexual display) and produced larger extrapair than within-pair chicks. Lean females obtained extrapair fertilizations when their social mate was genetically similar, thereby producing more heterozygous extrapair chicks. Our results suggest that mating patterns may be condition-dependent.
Keywords
Animals, Body Weight/physiology, Female, Fertilization/physiology, Genetic Variation, Male, Phenotype, Pigmentation/physiology, Principal Component Analysis, Sexual Behavior, Animal/physiology, Songbirds/genetics, Vocalization, Animal/physiology
Pubmed
Web of science
Open Access
Yes
Create date
29/01/2009 22:14
Last modification date
20/08/2019 13:39
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