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Seasonal change in the opportunity for sexual selection
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SYSNO ASEP 0093562 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Seasonal change in the opportunity for sexual selection Title Sezónní změny v potenciálu pohlavního výběru Author(s) Reichard, Martin (UBO-W) RID, ORCID, SAI, SAI
Smith, C. (GB)
Bryja, Josef (UBO-W) RID, SAI, ORCIDSource Title Molecular Ecology. - : Wiley - ISSN 0962-1083
Roč. 17, č. 2 (2008), s. 642-651Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords bitterling ; body size ; sexual selection ; mating success ; reproductive skew Subject RIV EH - Ecology, Behaviour R&D Projects KJB600930501 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z60930519 - UBO-W (2005-2011) UT WOS 000252398300013 EID SCOPUS 38149062589 DOI 10.1111/j.1365-294X.2007.03602.x Annotation We investigated seasonal changes in variation in reproductive success, measured as the opportunity for sexual selection, using parentage analysis in 20 experimental populations of the bitterling, a small freshwater fish with a promiscuous, resource-based mating system. We showed that although the largest males sired most offspring over the entire reproductive season, variation in reproductive success and hence the opportunity for sexual selection was low at the start of the season but increased significantly at its end. This seasonal difference probably arose from the superior competitive endurance of large males and from a higher temporal clustering of reproductively active females at the start of the breeding season than later in the season. The spatial distribution of oviposition sites had a negligible effect on the variation in reproductive success. We discuss the potential implications of our results for the importance and strength of sexual selection in natural populations. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2008
Number of the records: 1