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Sexual conflict and speciation

G A Parker1, L Partridge

  • 1Population Biology Research Group, School of Biological Sciences, University of Liverpool, UK.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|April 9, 1998
PubMed
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Sexual conflict drives genetic divergence and speciation by influencing mating behaviors and reproductive isolation between populations. Females often resist interpopulation mating, promoting reproductive isolation and potentially reducing genetic diversity.

Area of Science:

  • Evolutionary Biology
  • Genetics
  • Speciation

Background:

  • Sexual conflict arises from differing evolutionary interests between males and females.
  • This conflict can influence genetic differentiation and the evolution of reproductive isolation between populations.

Purpose of the Study:

  • To review the significance of sexual conflict in population genetic differentiation and reproductive isolation.
  • To explore theoretical models of sexual conflict resolution and its impact on speciation.

Main Methods:

  • Review of theoretical models on sexual conflict.
  • Analysis of genetic conflict at single and multiple loci.
  • Examination of sex-limited traits and pleiotropic genetic correlations.

Main Results:

Related Experiment Videos

  • Sexual conflict can lead to sexual dimorphism and reduced hybrid fitness.
  • Conflict over interpopulation mating can drive rapid coevolution of male traits and female preferences, promoting speciation.
  • Females often resist interpopulation mating, potentially leading to reinforcement and reduced genetic diversity in 'female-win' clades.

Conclusions:

  • Sexual conflict is a significant factor in the evolution of reproductive isolation and speciation.
  • Female resistance to interpopulation mating plays a key role in reinforcement and speciation.
  • The balance of 'value of winning' and 'power' determines the resolution of sexual conflict, influencing speciation rates.