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'Heritability' of dispersal propensity in a patchy population
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
2009 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 276, no 1668, 2829-2836 p.Article in journal (Refereed) Published
Abstract [en]

Although dispersal is often considered to be a plastic, condition-dependent trait with low heritability, growing evidence supports medium to high levels of dispersal heritability. Obtaining unbiased estimates of dispersal heritability in natural populations nevertheless remains crucial to understand the evolution of dispersal strategies and their population consequences. Here we show that dispersal propensity (i.e. the probability of dispersal between habitat patches) displays a significant heritability in the collared flycatcher Ficedula albicollis, as estimated by within-family resemblance when accounting for environmental factors. Offspring of dispersing mothers or fathers had a higher propensity to disperse to a new habitat patch themselves. The effect of parental dispersal status was additional to that of local habitat quality, as measured by local breeding population size and success, confirming previous results about condition-dependent dispersal in this population. The estimated levels of heritability varied between 0.30+/-0.07 and 0.47+/-0.10, depending on parent-offspring comparisons made and correcting for a significant assortative mating with respect to dispersal status. Siblings also displayed a significant resemblance in dispersal propensity. These results suggest that variation in between-patch natal dispersal in the collared flycatcher is partly genetically determined, and we discuss ways to quantify this genetic basis and its implications.

Place, publisher, year, edition, pages
2009. Vol. 276, no 1668, 2829-2836 p.
Keyword [en]
assortative mating, between-patch dispersal, conditional dispersal, dispersal determinism, parent-offspring and sibling similarity, spatial constraints
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-128407DOI: 10.1098/rspb.2009.0454ISI: 000267373700018PubMedID: 19419988OAI: oai:DiVA.org:uu-128407DiVA: diva2:331537
Available from: 2010-07-23 Created: 2010-07-20 Last updated: 2017-12-12Bibliographically approved

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Gustafsson, Lars

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