The evolution of infidelity in socially monogamous passerines: the strength of direct and indirect selection on extrapair copulation behavior in females.

@article{Arnqvist2005TheEO,
  title={The evolution of infidelity in socially monogamous passerines: the strength of direct and indirect selection on extrapair copulation behavior in females.},
  author={G{\"o}ran Arnqvist and Mark Kirkpatrick},
  journal={The American naturalist},
  year={2005},
  volume={165 Suppl 5},
  pages={S26-37}
}
Many studies have been aimed at understanding the maintenance of female infidelity in socially monogamous birds. Because engaging in extrapair copulations (EPCs) is believed to be costly for females, it has been argued that EPC behavior must bring indirect benefits to females by elevating offspring fitness. We use empirical data from the literature to assess the relative strength of indirect and direct selection on female EPC behavior, using quantitative genetic approximations of selection… CONTINUE READING
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