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Darwin, sexual selection, and the brain.

Michael J Ryan1,2

  • 1Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712; mryan@utexas.edu.

Proceedings of the National Academy of Sciences of the United States of America
|February 17, 2021
PubMed
Summary
This summary is machine-generated.

Darwin's theory of sexual selection proposed females prefer beautiful mates. Recent research integrates behavioral ecology, sensory ecology, and neuroscience to explain the mechanisms behind female mate choice and attraction to beauty.

Keywords:
mate choiceneurosciencesexual selection

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Area of Science:

  • Evolutionary Biology
  • Neuroscience
  • Behavioral Ecology

Background:

  • Charles Darwin's theory of sexual selection emphasized sexual beauty and female mate choice.
  • Renewed interest in Darwin's theories 50 years ago spurred research into mate choice mechanisms.
  • Early research focused on fitness advantages, later shifting to sensory ecology and neural underpinnings.

Purpose of the Study:

  • To review the progress in understanding Darwin's "taste for the beautiful" conjecture.
  • To explore the evolution of female mate choice and attraction.
  • To synthesize research across diverse fields to understand the chooser's mate choices.

Main Methods:

  • Review of historical and contemporary research on sexual selection.
  • Integration of findings from behavioral ecology, sensory ecology, neuroscience, psychophysics, behavioral economics, and neuroaesthetics.
  • Analysis of the underlying mechanisms of sexual attraction and mate preference.

Main Results:

  • Female preferences for elaborate male traits can stem from an innate "taste for the beautiful."
  • Sensory ecology and neural mechanisms significantly influence female mate preferences.
  • Higher-order cognitive and aesthetic mechanisms contribute to sexual attraction.

Conclusions:

  • Understanding sexual attraction requires an interdisciplinary approach, integrating evolutionary, ecological, and neurobiological perspectives.
  • Darwin's conjecture on the "taste for the beautiful" is supported by modern research across multiple scientific domains.
  • Continued research promises deeper insights into the complexities of mate choice and sexual selection.