Article
When mothers make sons sexy: maternal effects contribute to the increased sexual attractiveness of extra-pair offspring.
Proceedings. Biological sciences - 22 Mar 2012
Tschirren Barbara, Postma Erik, Rutstein Alison N, Griffith Simon C
Abstract excerpt
Quality differences between offspring sired by the social and by an extra-pair partner are usually assumed to have a genetic basis, reflecting genetic benefits of female extra-pair mate choice. In the zebra finch (Taeniopygia guttata), we identified a colour ornament that is under sexual selection and appears to have a heritable basis. Hence, by engaging in extra-pair copulations with highly ornamented males,...
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