Are extra-pair males different from cuckolded males? A case study and a meta-analytic examination.

@article{Hsu2015AreEM,
  title={Are extra-pair males different from cuckolded males? A case study and a meta-analytic examination.},
  author={Yu-Hsun Hsu and Julia Schr{\"o}der and Isabel Winney and Terry Burke and Shinichi Nakagawa},
  journal={Molecular ecology},
  year={2015},
  volume={24 7},
  pages={
          1558-71
        }
}
Traditional models for female extra-pair matings assume that females benefit indirectly from extra-pair mating behaviour. Under these so-called adaptive models, extra-pair males are hypothesized to have more compatible genotypes, larger body size, exaggerated ornaments or to be older than cuckolded males. Alternatively, ('nonadaptive') models that consider female extra-pair matings to be a by-product posit that female extra-pair mating can be maintained even if there is no benefit to females… CONTINUE READING
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