Heterospecific harassment of native endangered fishes by invasive guppies in Mexico.

Biology Letters
Alejandra ValeroA E Magurran

Abstract

Persistent courtship by male Trinidadian guppies (Poecilia reticulata) is costly for conspecific females. Since male guppies are known to attempt matings with other poeciliid females, we asked whether persistent courtship is also directed towards morphologically similar but phylogenetically distant females encountered following invasion. Skiffia bilineata is one of several endangered viviparous goodeids from Central México, whose remaining habitats are increasingly shared with invasive guppies. Experiments in which guppy sex ratios were manipulated to vary the proportion of heterospecific to conspecific females showed that male guppies courted and attempted forced copulations with S. bilineata females even when females of their own species were in excess. This behaviour places an additional, and previously unrecognized, burden on a group of endemic Mexican fishes already in risk of extinction.

References

Oct 28, 1999·Nature·J L KelleyA E Magurran
Aug 6, 2004·Proceedings. Biological Sciences·S A Becher, A E Magurran
May 2, 2006·The American Naturalist·Darren P CroftJens Krause

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Citations

Oct 10, 2008·Biology Letters·Jennifer M GummMurray Itzkowitz
Jan 23, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Luke Holman, Hanna Kokko
May 21, 2011·The American Naturalist·Daniel J RankinHanna Kokko
Oct 24, 2013·Ecological Applications : a Publication of the Ecological Society of America·Tara M HolitzkiKarla J McDermid
Jun 13, 2015·Royal Society Open Science·Morelia Camacho-CervantesAnne E Magurran
Feb 15, 2018·PloS One·Morelia Camacho-CervantesAnne E Magurran
Feb 9, 2018·Biological Reviews of the Cambridge Philosophical Society·Susana A M VarelaIngo Schlupp
Apr 14, 2017·Ecology and Evolution·Brenda Manzano-WinklerMohamed A F Noor

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