Sexual conflict and ecology: Species composition and male density interact to reduce male mating harassment and increase female survival

Evolution; International Journal of Organic Evolution
Miguel A Gomez-LlanoErik I Svensson

Abstract

Sexual conflict is a pervasive evolutionary force that can reduce female fitness. Experimental evolution studies in the laboratory might overestimate the importance of sexual conflict because the ecological conditions in such settings typically include only a single species. Here, we experimentally manipulated conspecific male density (high or low) and species composition (sympatric or allopatric) to investigate how ecological conditions affect female survival in a sexually dimorphic insect, the banded demoiselle (Calopteryx splendens). Female survival was strongly influenced by an interaction between male density and species composition. Specifically, at low conspecific male density, female survival increased in the presence of heterospecific males (C. virgo). Behavioral mating experiments showed that interspecific interference competition reduced conspecific male mating success with large females. These findings suggest that reproductive interference competition between con- and heterospecific males might indirectly facilitate female survival by reducing mating harassment from conspecific males. Hence, interspecific competitors can show contrasting effects on the two sexes thereby influencing sexual conflict dynamics. Our res...Continue Reading

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Citations

Sep 22, 2018·Evolution; International Journal of Organic Evolution·Yasuoki TakamiMasakado Kawata
Apr 4, 2019·Evolution; International Journal of Organic Evolution·Grant C McDonaldTommaso Pizzari
Jan 12, 2020·Evolution; International Journal of Organic Evolution·David C S FiliceReuven Dukas
Jul 22, 2020·Biological Reviews of the Cambridge Philosophical Society·Roberto García-RoaPau Carazo
Mar 14, 2020·BMC Evolutionary Biology·Aleksandra Łukasiewicz
Aug 29, 2018·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jennifer C Perry, Locke Rowe
Apr 1, 2021·Trends in Ecology & Evolution·Miguel Gómez-LlanoAdam M Siepielski
May 8, 2021·Biological Reviews of the Cambridge Philosophical Society·Agata Plesnar-Bielak, Aleksandra Łukasiewicz

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