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Título

Temporal variation of heterozygosity-based assortative mating and related benefits in a lesser kestrel population

AutorOrtego, Joaquín ; Calabuig, Gustau ; Bonal, Raúl ; Muñoz, Alberto ; Aparicio, José Miguel ; Cordero, Pedro J.
Palabras claveAssortative mating
Fitness
Genetic diversity
Heterozygosity
Lek paradox
Mate preferences
Fecha de publicación2009
EditorWiley-Blackwell
CitaciónJournal of Evolutionary Biology 22: 2488-2495 (2009)
ResumenHeterozygosity as a target of mate choice has received much attention in recent years and there is growing evidence supporting its role in the evolution of mate preferences. In this study we analyse mating patterns in relation to heterozygosity in a lesser kestrel (Falco naumanni) population intensively monitored over six study years (2002–2007). The magnitude of heterozygosity- based assortative mating varied over time, being particularly patent in the last study years (2006, 2007). We have found evidence that this mating pattern entails both direct and indirect-genetic benefits. Clutch size increased with female heterozygosity and more heterozygous males raised a higher number of fledglings particularly in those years when the strength of the heterozygosity-based assortative mating was markedly higher. In the last study year, parent–offspring correlation of heterozygosity was stronger and higher than the expected if individuals would have randomly mated with respect to heterozygosity. Overall, our results offer empirical support to the heterozygous mate hypothesis of sexual selection but suggest that genetic diversity may act as a temporally variable target for mate choice.
Descripción9 pages, figures, and tables statistics.
Versión del editorhttp://dx.doi.org/10.1111/j.1420-9101.2009.01865.x
URIhttp://hdl.handle.net/10261/23575
DOI10.1111/j.1420-9101.2009.01865.x
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