Sexual conflict over the duration of copulation in Drosophila montana: why is longer better?

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Show simple item record Mazzi, Dominique Kesäniemi, Jenni Hoikkala, Anneli Klappert, Kirsten 2012-11-20T08:10:55Z 2012-11-20T08:10:55Z 2009 fi
dc.identifier.citation Mazzi, D., Kesäniemi, J., Hoikkala, A., & Klappert, K. (2009). Sexual conflict over the duration of copulation in Drosophila montana: why is longer better?. BMC Evolutionary Biology, 9 (132). Retrieved from fi
dc.identifier.issn 1471-2148
dc.description.abstract Background. Conflicts of interest between the sexes are increasingly recognized as an engine driving the (co-)evolution of reproductive traits. The reproductive behaviour of Drosophila montana suggests the occurrence of sexual conflict over the duration of copulation. During the last stages of copulation, females vigorously attempt to dislodge the mounting male, while males struggle to maintain genital contact and often successfully extend copulations far beyond the females' preferred duration. Results. By preventing female resistance, we show that females make a substantial contribution towards shortening copulations. We staged matings under different sex ratio conditions, and provide evidence that copulation duration is a form of male reproductive investment that responds to the perceived intensity of sperm competition as predicted by game theoretical models. Further, we investigated potential benefits to persistent males, and costs to females coerced into longer matings. While males did not benefit in terms of increased progeny production by protracting copulation, female remating was delayed after long first copulations. Conclusion. Copulation time is a trait subject to sexual conflict. Mating durations exceeding female optima serve males as a form of 'extended mate guarding': by inducing mating refractoriness in the female, a male extends the time over which its sperm is exclusively used to sire progeny and reduces the likelihood of the female being reinseminated by a competitor. fi
dc.language.iso eng
dc.publisher BioMed Central (BMC)
dc.relation.ispartofseries BMC Evolutionary Biology
dc.rights © 2009 Mazzi et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License.
dc.rights openAccess fi
dc.subject.other seksuaalinen konflikti
dc.subject.other parittelun pituus
dc.title Sexual conflict over the duration of copulation in Drosophila montana: why is longer better? fi
dc.type Article
dc.subject.kota 118
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.contributor.laitos The Department of Biological and Environmental Science en
dc.identifier.doi 10.1186/1471-2148-9-132 2012-11-15T14:52:50Z
dc.description.version Publisher's PDF
dc.rights.holder Dominique Mazzi et al.; licensee BioMed Central Ltd.
dc.type.coar journal article
dc.description.reviewStatus peerReviewed
dc.relation.issn 1471-2148
dc.type.version publishedVersion

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