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Related Experiment Videos

Mate-sampling costs and sexy sons.

H Kokko1, I Booksmythe, M D Jennions

  • 1Centre of Excellence in Biological Interactions, Evolution, Ecology and Genetics, Research School of Biology, Australian National University, Canberra, ACT, Australia; Wissenschaftskolleg zu Berlin, Berlin, Germany; Institute of Evolutionary Biology and Environmental Sciences, University of Zurich, Zurich, Switzerland.

Journal of Evolutionary Biology
|November 18, 2014
PubMed
Summary
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Female mating preferences for costly male traits can persist if mate-sampling costs are considered. Explicitly modeling how females find mates reveals new possibilities for trait coevolution and preference stability.

Area of Science:

  • Evolutionary biology
  • Behavioral ecology
  • Population genetics

Background:

  • Costly female mating preferences for male traits are generally unstable at equilibrium.
  • The indirect benefit of 'sexy sons' often fails to offset direct survival costs, leading to preference loss.
  • Existing models often assume fixed costs and rely on biased mutation for trait persistence.

Purpose of the Study:

  • To investigate the conditions under which costly female mating preferences can coevolve with male traits.
  • To explore the role of mate-sampling costs in maintaining preferences and traits at equilibrium.
  • To assess the detectability of selection at equilibrium.

Main Methods:

  • Development of theoretical models incorporating explicit mate-sampling costs.
Keywords:
costly female choicefisherian sexual selectionmate sampling

Related Experiment Videos

  • Analysis of evolutionary dynamics of female preferences and male traits.
  • Comparison of model predictions with and without biased mutation.

    • Main Results:

    • Costly mating preferences can persist when mate-sampling costs are explicitly modeled.
    • Coevolution of preferences and male traits is possible even without biased mutation.
    • Selection at equilibrium may be difficult to detect empirically.

    Conclusions:

    • Integrating mate-sampling theory with models of mating preferences can alter predicted evolutionary equilibria.
    • The process of mate acquisition is crucial for understanding the stability of costly preferences.
    • Explicit consideration of sampling costs provides a novel framework for understanding sexual selection.