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The dynamics of sexually antagonistic coevolution and the complex influences of mating system and genetic correlation.

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Author

  • Roger Härdling
  • Kristina Karlsson

Summary, in English

Sexual conflict has been proposed to be a mediator of speciation but recent theoretical work, as well as empirical studies, suggests that sexual conflict may also be able to prevent speciation and to preserve genetic polymorphism within a species. Here, we develop a population genetic model and study the effects of sexual conflict in a polymorphic population. The morphs mate assortatively based on different sexually antagonistic traits and females are assumed to suffer a cost when the proportion of matching males is high. We consider the model in two different mating systems; promiscuity and polygyny. Our results show that genetic polymorphism may be maintained through negative frequency dependent selection established by assortative mating and female conflict costs. However, the outcome significantly differs between mating systems. Furthermore, we show that indirect selection may have profound effects on the evolutionary dynamics of a sexual conflict.

Publishing year

2009

Language

English

Pages

276-282

Publication/Series

Journal of Theoretical Biology

Volume

260

Document type

Journal article

Publisher

Academic Press

Topic

  • Biological Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1095-8541