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Assessment of Sexual Behavior of Male Mice
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Sexual selection drives the evolution of male wing interference patterns.

M F Hawkes1, E Duffy1,2, R Joag1,2

  • 11 Centre for Ecology and Conservation, University of Exeter , Tremough, Penryn TR10 9FE , UK.

Proceedings. Biological Sciences
|May 30, 2019
PubMed
Summary

Insect wing colors, known as wing interference patterns (WIPs), evolve due to sexual selection. These structural colors influence mate choice and male attractiveness in Drosophila.

Keywords:
Drosophilacourtshipevolutionsensory ecologysexual selection

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Area of Science:

  • Evolutionary biology
  • Animal behavior
  • Structural coloration

Background:

  • Insect wings can exhibit structural coloration, forming wing interference patterns (WIPs), which may play roles in species recognition and mate selection.
  • The evolutionary mechanisms driving the development of WIPs and their perception by viewers' color vision remain underexplored.

Purpose of the Study:

  • To investigate the evolutionary processes shaping wing interference patterns (WIPs) in Drosophila.
  • To determine if WIPs evolve in response to sexual selection and if they correlate with male sexual attractiveness.

Main Methods:

  • Utilized multispectral digital imaging to capture WIPs from male and female Drosophila simulans.
  • Employed a model of Drosophila vision to analyze WIPs.
  • Compared WIPs in populations subjected to sexual selection versus those without for 68 generations.

Main Results:

  • Wing interference patterns (WIPs) in Drosophila were shown to evolve under the influence of sexual selection.
  • A correlation was found between WIPs and male sexual attractiveness.
  • The study provides evidence that wing colors evolve through sexual selection.

Conclusions:

  • Sexual selection is a significant evolutionary driver for the structural coloration observed in insect wings (WIPs).
  • WIPs contribute to the complex courtship displays in Drosophila, influencing mate choice.
  • This research adds a new dimension to understanding Drosophila courtship and the evolution of visual signals.