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dc.contributor.authorDougherty, Liam R.
dc.contributor.authorShuker, David M.
dc.identifier.citationDougherty , L R & Shuker , D M 2016 , ' Variation in pre- and post-copulatory sexual selection on male genital size in two species of lygaeid bug ' Behavioral Ecology and Sociobiology , vol. 70 , no. 4 , pp. 625-637 . DOI: 10.1007/s00265-016-2082-6en
dc.identifier.otherPURE: 240791285
dc.identifier.otherPURE UUID: 866f3780-c1b3-40b5-9615-b1be1660dd6c
dc.identifier.otherScopus: 84961061931
dc.descriptionThis study was funded by the Natural Environmental Research Council (DTG studentship 1109354 to LRD).en
dc.description.abstractSexual selection has been shown to be the driving force behind the evolution of the sometimes extreme and elaborate genitalia of many species. Sexual selection may arise before and/or after mating, or vary according to other factors such as the social environment. However, bouts of selection are typically considered in isolation. We measured the strength and pattern of selection acting on the length of the male intromittent organ (or processus) in two closely related species of lygaeid seed bug: Lygaeus equestris and Lygaeus simulans. In both species, we measured both pre- and post-copulatory selection. For L. equestris, we also varied the experimental choice design used in mating trials. We found contrasting pre- and post-copulatory selection on processus length in L. equestris. Furthermore, significant pre-copulatory selection was only seen in mating trials in which two males were present. This selection likely arises indirectly due to selection on a correlated trait, as the processus does not interact with the female prior to copulation. In contrast, we were unable to detect significant pre- or post-copulatory selection on processus length in L. simulans. However, a formal meta-analysis of previous estimates of post-copulatory selection on processus length in L. simulans suggests that there is significant stabilising selection across studies, but the strength of selection varies between experiments. Our results emphasise that the strength and direction of sexual selection on genital traits may be multifaceted and can vary across studies, social contexts and different stages of reproduction.en
dc.relation.ispartofBehavioral Ecology and Sociobiologyen
dc.rights© The Author(s) 2016. This article is published with open access at This article is distributed under the terms of the Creative Commons At tribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.en
dc.subjectGenital evolutionen
dc.subjectSexual selectionen
dc.subjectSocial environmenten
dc.subjectQH301 Biologyen
dc.titleVariation in pre- and post-copulatory sexual selection on male genital size in two species of lygaeid bugen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Centre for Higher Education Researchen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews. Centre for Biological Diversityen
dc.description.statusPeer revieweden

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