Reproductive interference explains persistence of aggression between species

Proceedings. Biological Sciences
J P DruryG F Grether

Abstract

Interspecific territoriality occurs when individuals of different species fight over space, and may arise spontaneously when populations of closely related territorial species first come into contact. But defence of space is costly, and unless the benefits of excluding heterospecifics exceed the costs, natural selection should favour divergence in competitor recognition until the species no longer interact aggressively. Ordinarily males of different species do not compete for mates, but when males cannot distinguish females of sympatric species, females may effectively become a shared resource. We model how reproductive interference caused by undiscriminating males can prevent interspecific divergence, or even cause convergence, in traits used to recognize competitors. We then test the model in a genus of visually orienting insects and show that, as predicted by the model, differences between species pairs in the level of reproductive interference, which is causally related to species differences in female coloration, are strongly predictive of the current level of interspecific aggression. Interspecific reproductive interference is very common and we discuss how it may account for the persistence of interspecific aggression in...Continue Reading

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Citations

Jan 13, 2016·Ecology Letters·Neil LosinGregory F Grether
Jan 6, 2016·BMC Evolutionary Biology·Topi K LehtonenBob B M Wong
Sep 18, 2015·Proceedings. Biological Sciences·Topi K LehtonenBob B M Wong
Mar 2, 2018·Current Zoology·Alycia C R LackeyRobin M Tinghitella
Apr 4, 2019·Evolution; International Journal of Organic Evolution·Grant C McDonaldTommaso Pizzari
Nov 17, 2019·Ecology Letters·Gregory F GretherChristopher N Anderson
Jul 28, 2020·Evolution; International Journal of Organic Evolution·Madeline C CowenGregory F Grether
Aug 8, 2020·Journal of Evolutionary Biology·Daisuke Kyogoku, David Wheatcroft
Jul 18, 2019·Royal Society Open Science·Tarun GuptaBrent L Lockwood
Jan 11, 2020·Nature Communications·Gregory F Grether
May 28, 2020·Proceedings of the National Academy of Sciences of the United States of America·Jonathan P DruryGregory F Grether

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