Wing reduction influences male mating success but not female fitness in cockroaches

Abstract Although cockroaches (Blattodea s. str.) exhibit high proportion of species with reduced wings, the underlying evolutionary forces remain unclear. Wing reduction in insects is generally considered advantageous for females and a trade-off between investment into the flying apparatus and repr...

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Autores principales:	Michael Kotyk, Zuzana Varadínová
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c109aad9372e4b30acff757363c03829
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spelling	oai:doaj.org-article:c109aad9372e4b30acff757363c038292021-12-02T16:06:24ZWing reduction influences male mating success but not female fitness in cockroaches10.1038/s41598-017-02647-72045-2322https://doaj.org/article/c109aad9372e4b30acff757363c038292017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02647-7https://doaj.org/toc/2045-2322Abstract Although cockroaches (Blattodea s. str.) exhibit high proportion of species with reduced wings, the underlying evolutionary forces remain unclear. Wing reduction in insects is generally considered advantageous for females and a trade-off between investment into the flying apparatus and reproduction is predicted to explain its evolution. However, what if the wing maintenance is an important issue for males’ fitness? Males raise wings during the ritualized courtship which is viewed as an unavoidable movement unveiling the tergal glands for female access. We, however, propose a novel male mating success hypothesis suggesting that male wings are essential for their successful mating. We tested these two competing, but not mutually exclusive hypotheses in the cockroach Eublaberus distanti. We found no effect of female wing loss on any of the measured fecundity characteristics despite that alatectomized females histolyzed flight muscles. On the contrary, alatectomized males did not histolyze wing muscles, but experienced a markedly decreased mating success. Our findings, therefore, provide the first evidence on the crucial mechanical role of wings on male mating success. Consequently, selection for the retention of wings in males rather than for their reduction in females can explain the evolution of sexual wing dimorphism in cockroaches and other insects.Michael KotykZuzana VaradínováNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michael Kotyk Zuzana Varadínová Wing reduction influences male mating success but not female fitness in cockroaches
description	Abstract Although cockroaches (Blattodea s. str.) exhibit high proportion of species with reduced wings, the underlying evolutionary forces remain unclear. Wing reduction in insects is generally considered advantageous for females and a trade-off between investment into the flying apparatus and reproduction is predicted to explain its evolution. However, what if the wing maintenance is an important issue for males’ fitness? Males raise wings during the ritualized courtship which is viewed as an unavoidable movement unveiling the tergal glands for female access. We, however, propose a novel male mating success hypothesis suggesting that male wings are essential for their successful mating. We tested these two competing, but not mutually exclusive hypotheses in the cockroach Eublaberus distanti. We found no effect of female wing loss on any of the measured fecundity characteristics despite that alatectomized females histolyzed flight muscles. On the contrary, alatectomized males did not histolyze wing muscles, but experienced a markedly decreased mating success. Our findings, therefore, provide the first evidence on the crucial mechanical role of wings on male mating success. Consequently, selection for the retention of wings in males rather than for their reduction in females can explain the evolution of sexual wing dimorphism in cockroaches and other insects.
format	article
author	Michael Kotyk Zuzana Varadínová
author_facet	Michael Kotyk Zuzana Varadínová
author_sort	Michael Kotyk
title	Wing reduction influences male mating success but not female fitness in cockroaches
title_short	Wing reduction influences male mating success but not female fitness in cockroaches
title_full	Wing reduction influences male mating success but not female fitness in cockroaches
title_fullStr	Wing reduction influences male mating success but not female fitness in cockroaches
title_full_unstemmed	Wing reduction influences male mating success but not female fitness in cockroaches
title_sort	wing reduction influences male mating success but not female fitness in cockroaches
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c109aad9372e4b30acff757363c03829
work_keys_str_mv	AT michaelkotyk wingreductioninfluencesmalematingsuccessbutnotfemalefitnessincockroaches AT zuzanavaradinova wingreductioninfluencesmalematingsuccessbutnotfemalefitnessincockroaches
_version_	1718385051010334720

Wing reduction influences male mating success but not female fitness in cockroaches

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