Quantitative genetic models of sexual selection by male choice

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Abstract

There are many examples of male mate choice for female traits that tend to be associated with high fertility. I develop quantitative genetic models of a female trait and a male preference to show when such a male preference can evolve. I find that a disagreement between the fertility maximum and the viability maximum of the female trait is necessary for directional male preference (preference for extreme female trait values) to evolve. Moreover, when there is a shortage of available male partners or variance in male nongenetic quality, strong male preference can evolve. Furthermore, I also show that males evolve to exhibit a stronger preference for females that are more feminine (less resemblance to males) than the average female when there is a sexual dimorphism caused by fertility selection which acts only on females.

Original languageEnglish
Pages (from-to)167-181
Number of pages15
JournalTheoretical Population Biology
Volume74
Issue number2
DOIs
Publication statusPublished - 2008 Sep 1

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Keywords

  • Position reversal between sexes
  • Runaway process
  • Sex role reversal
  • Sexual dimorphism
  • Shortage of available male partners
  • Variance in male quality

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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