Change search
ReferencesLink to record
Permanent link

Direct link
Sex-specific, counteracting responses to inbreeding in a bird
School of Biology, University of Leeds.
Stockholm University, Faculty of Science, Department of Zoology. Etologi.
Dept of Animal & Plant Science, University of Sheffield.
2004 (English)In: Proceedings of the Royal Society of London B, ISSN 0962-8452, Vol. 271, no 1553, 2115-2121 p.Article in journal (Refereed) Published
Abstract [en]

Inbreeding often depresses offspring fitness. Because females invest more than males in a reproductive event, inbreeding is expected to be more costly to mothers than fathers, creating a divergence between the reproductive interests of each sex and promoting sex-specific inbreeding strategies. Males and females may bias the probability of inbreeding by selecting copulation partners, and, in sexually promiscuous species, through male strategic sperm investment in different females and female selection of the sperm of different males. However, these processes are often difficult to study, and the way that different male and female strategies interact to determine inbreeding remains poorly understood. Here we demonstrate sex-specific, counteracting responses to inbreeding in the promiscuous red junglefowl, Gallus gallus. First, a male was just as likely to copulate with his full-sib sister as with an unrelated female. In addition, males displayed a tendency to: (i) initiate copulation faster when exposed to an unrelated female than when exposed to a sister, and (ii) inseminate more sperm into sisters than into unrelated females. Second, females retained fewer sperm following insemination by brothers, thus reducing the risk of inbreeding and counteracting male inbreeding strategies.

Place, publisher, year, edition, pages
2004. Vol. 271, no 1553, 2115-2121 p.
Keyword [en]
cryptic female choice, genetic compatibility, incest, kin, sperm allocation, sexual conflict
URN: urn:nbn:se:su:diva-21618OAI: diva2:188145
Available from: 2007-12-13 Created: 2007-12-13 Last updated: 2011-01-12Bibliographically approved

Open Access in DiVA

No full text

By organisation
Department of Zoology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 19 hits
ReferencesLink to record
Permanent link

Direct link