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dc.contributor.authorBurdfield-Steel, Emily Rose
dc.contributor.authorAuty, Sam
dc.contributor.authorShuker, David Michael
dc.identifier.citationBurdfield-Steel , E R , Auty , S & Shuker , D M 2015 , ' Do the benefits of polyandry scale with outbreeding? ' Behavioral Ecology , vol. 26 , no. 5 , pp. 1423-1431 .
dc.identifier.otherPURE: 195568826
dc.identifier.otherPURE UUID: fe2c40e3-c83b-481e-9548-9ed6468148a1
dc.identifier.otherScopus: 84941659483
dc.description.abstractThere have been many potential explanations put forward as to why polyandry often persists despite the multiple costs it can inflict on females. One such explanation is avoidance of costs associated with mating with genetically incompatible males. Genetic incompatibility can be thought of as a spectrum from individuals that are genetically too similar (inbreeding) to those that are too dissimilar (outbreeding or hybridization). Here we look for evidence that the level of outbreeding influences the benefits of polyandry in the seed bug Lygaeus equestris. Our system allows us to test for benefits of polyandry at levels of genetic similarity ranging from full siblings to heterospecifics, both in terms of egg production and hatching success. We found that while outbreeding level appeared to have no effect on fitness for intra-specific matings, and polyandry did not appear to result in any increase in fertility or fecundity, hybridization with a closely-related species, L. simulans, carried considerable fitness costs. However, these costs could be rescued with a single mating to a conspecific. Thus, polyandry may be beneficial in populations that co-occur with closely-related species and where there is reproductive interference. However, within-species genetic incompatibility is unlikely to be the driving force behind polyandry in this species. Furthermore, the mechanism underlying this rescue of fertility remains unclear as manipulation of male cuticular hydrocarbon profile, a possible mechanism by which females can assess male identity, had no effect on female offspring production.
dc.relation.ispartofBehavioral Ecologyen
dc.rights© The Author 2015. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.subjectReproductive interferenceen
dc.subjectSexual selectionen
dc.subjectGenetic compatabilityen
dc.subjectQH426 Geneticsen
dc.titleDo the benefits of polyandry scale with outbreeding?en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
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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