Evolution of sexual size monomorphism: the influence of passive mate guarding

@article{Dunham2009EvolutionOS,
  title={Evolution of sexual size monomorphism: the influence of passive mate guarding},
  author={April Dunham and Volker H. W. Rudolf},
  journal={Journal of Evolutionary Biology},
  year={2009},
  volume={22}
}
  • A. Dunham, V. Rudolf
  • Published 1 July 2009
  • Biology, Psychology
  • Journal of Evolutionary Biology
Some species have potential for intense mate competition yet exhibit little or no sexual size dimorphism, despite predictions from sexual selection theory. Using a conceptual model, we show the conditions for which passive mate guarding with copulatory plugs can be an alternative and more successful strategy to active (direct) guarding, reducing selection pressure on large male size. The model predicts that copulatory plugs in mammals should be favoured in species for which females have short… 
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