Females use multiple mating and genetically loaded sperm competition to target compatible genes

Sarah R. Pryke, Lee A. Rollins, Simon C. Griffith

Research output: Contribution to journalArticle

49 Citations (Scopus)


Individuals in socially monogamous species may participate in copulations outside of the pair bond, resulting in extra-pair offspring. Although males benefit from such extra-pair behavior if they produce more offspring, the adaptive function of infidelity to females remains elusive. Here we show that female participation in extra-pair copulations, combined with a genetically loaded process of sperm competition, enables female finches to target genes that are optimally compatible with their own to ensure fertility and optimize offspring viability. Such female behavior, along with the postcopulatory processes demonstrated here, may provide an adaptive function of female infidelity in socially monogamous animals.

Original languageEnglish
Pages (from-to)964-967
Number of pages4
Issue number5994
Publication statusPublished - 20 Aug 2010


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