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Related Experiment Videos

Postcopulatory sexual selection.

Timothy R Birkhead1, Tommaso Pizzari

  • 1Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK. t.r.birkhead@sheffield.ac.uk

Nature Reviews. Genetics
|April 23, 2002
PubMed
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Sperm competition in female reproductive tracts drives rapid evolution and diverse adaptations. Further research is needed on the genetic basis of male fertility and female sperm selection traits and their coevolution.

Area of Science:

  • Evolutionary biology
  • Reproductive biology
  • Genetics

Background:

  • The female reproductive tract is a key site for sperm competition.
  • Postcopulatory sexual selection, influenced by females, drives rapid evolutionary change.
  • This leads to diverse adaptations in morphology, behavior, and physiology.

Purpose of the Study:

  • To advance the understanding of postcopulatory sexual selection.
  • To identify the genetic basis of male fertility and female sperm selection traits.
  • To determine the coevolutionary trajectory between sexes.

Main Methods:

  • Investigating genetic underpinnings of reproductive traits.
  • Analyzing genes and genomic regions controlling these traits.
  • Examining coevolutionary patterns between male and female reproductive strategies.

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Main Results:

  • Sperm competition is a significant evolutionary force.
  • Females actively mediate sperm selection.
  • Diverse adaptations arise from inter-sexual conflict.

Conclusions:

  • Resolving the genetic basis of fertility and selection traits is crucial.
  • Understanding coevolution is key to explaining reproductive diversity.
  • Further research will illuminate the evolutionary dynamics of sexual selection.