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Intersexual correlation for same-sex sexual behaviour in an insect
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Evolutionsbiologi.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Zooekologi.
2013 (engelsk)Inngår i: Animal Behaviour, ISSN 0003-3472, E-ISSN 1095-8282, Vol. 85, nr 4, s. 759-762Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Same-sex sexual behaviour is widespread across taxa and is particularly common in insects, in which up to 50% of copulation attempts by males are directed towards other males in some species. Research effort has focused on male-male same-sex behaviour and the prevailing theory is that benefits of high mating rate combined with poor sex discrimination explain the high incidence of male-male mounting. However, the evolution of female-female mounting is more enigmatic, since females typically do not mount males in order to mate. Using a full-sib design, we found an intersexual correlation for same-sex mounting in the beetle Callosobruchus maculatus. Variation in male-male mounting across families explained over 20% of variation in female-female mounting. Moreover, we found no evidence that same-sex behaviour was related to general activity level in either sex or carried a fitness cost to females. Taken together, our results suggest that female-female mounting is a relatively low-cost behaviour that may be maintained in the population via selection on males.

sted, utgiver, år, opplag, sider
2013. Vol. 85, nr 4, s. 759-762
Emneord [en]
Callosobruchus maculatus, homosexuality, male-female coevolution, mating behaviour, seed beetle, sexual selection
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Identifikatorer
URN: urn:nbn:se:uu:diva-198892DOI: 10.1016/j.anbehav.2013.01.017ISI: 000316726900010OAI: oai:DiVA.org:uu-198892DiVA, id: diva2:619300
Tilgjengelig fra: 2013-05-02 Laget: 2013-04-29 Sist oppdatert: 2017-12-06bibliografisk kontrollert

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