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Related Concept Videos

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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
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Reproductive interference explains persistence of aggression between species.

Jonathan P Drury1, Kenichi W Okamoto2, Christopher N Anderson3

  • 1Department of Ecology and Evolutionary Biology, University of California, 621 Charles E. Young Drive South, Los Angeles, CA 90095-1606, USA.

Proceedings. Biological Sciences
|March 6, 2015
PubMed
Summary
This summary is machine-generated.

When males can

Keywords:
Hetaerinacharacter displacementdamselflyinterference competitioninterspecific territorialityspecies recognition

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Behavioral Ecology

Background:

  • Interspecific territoriality, where different species compete for space, can arise when closely related territorial species interact.
  • The costs of defending space must be outweighed by the benefits of excluding other species for natural selection to favor divergence in competitor recognition.
  • Reproductive interference occurs when males cannot distinguish females of sympatric species, leading to competition for mates and shared resources.

Purpose of the Study:

  • To model how reproductive interference can prevent or even reverse the divergence of traits used for competitor recognition.
  • To test the model's predictions using a genus of visually orienting insects.
  • To investigate the relationship between reproductive interference, female coloration, and interspecific aggression.

Main Methods:

  • Mathematical modeling of trait evolution under conditions of reproductive interference.
  • Empirical testing using a specific genus of insects with visual orientation.
  • Analysis of species differences in female coloration and their correlation with interspecific aggression levels.

Main Results:

  • The model demonstrated that reproductive interference can impede interspecific divergence or promote convergence in competitor recognition traits.
  • Empirical data from insects supported the model, showing that reproductive interference levels predict interspecific aggression.
  • Differences in female coloration were found to be causally related to the level of reproductive interference between species pairs.

Conclusions:

  • Reproductive interference is a significant factor that can maintain or drive convergence in traits related to interspecific aggression.
  • Female coloration plays a crucial role in mediating reproductive interference and subsequent interspecific aggression.
  • Interspecific reproductive interference is widespread and may explain the persistence of aggression between species across various taxa.