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A sexual conflict in collared flycatchers, Ficedula albicollis: early male moult reduces female fitness
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Animal Ecology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Animal Ecology.
1998 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 265, no 1409, 2003-2007 p.Article in journal (Refereed) Published
Abstract [en]

A sexual conflict over levels of parental care occurs in most animals with biparental care, and studies of sexual differences in levels of parental care have usually focused on its intra-annual fitness consequences. We investigated inter-annual fitness consequences of a sexual difference in timing of feather replacement (moult) in collared flycatchers (Ficedula albicollis). In this study, males overlapped reproduction and moult more often than females, they also initiated their moult at an earlier stage of breeding than females. Females mated to males with a moult-breeding overlap had significantly lowered survival chances than females mated with males initiating moult after breeding. Furthermore, females mated with moulting males risked a lowered future fecundity in terms of a delayed start to breeding in the following season. However, early moulting males achieved a similar reproductive success as males initiating moult after breeding. Likewise, male survival probability to the following breeding season did not differ between early and late moulting individuals, nor was there any evidence that males gained or lost in future mating advantages by moulting early. These results show not only that a sexual conflict over timing of moult may operate, but also that it can impose severe fitness consequences, in terms of reduced future fecundity and survival probability, upon the 'losing' sex.

Place, publisher, year, edition, pages
1998. Vol. 265, no 1409, 2003-2007 p.
Keyword [en]
costs of reproduction, moult-breeding overlap, sexual conflict, trade-off
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-83333DOI: 10.1098/rspb.1998.0532PubMedID: 1689485OAI: oai:DiVA.org:uu-83333DiVA: diva2:111241
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-14Bibliographically approved

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