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Sex-specific dispersal patterns of wolverines: Insights from microsatellite markers
Stockholm University, Faculty of Science, Department of Zoology.
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2007 (English)In: Journal of Mammalogy, ISSN 0022-2372, E-ISSN 1545-1542, Vol. 88, no 3, 793-800 p.Article in journal (Refereed) Published
Abstract [en]

Dispersal of individuals can be defined as movement and settling outside the natal home range. Such dispersal is often sex-biased among vertebrates, and is generally expected to be male-biased in polygynous mammals. We used microsatellite markers scored on harvested wolverines (Gulo gulo) to test the prediction of male-biased dispersal in a population in the western Brooks Range, Alaska. Our analyses suggested a high rate of dispersal within the population, but provided no support for sex differences in dispersal tendencies across the sampled spatial scale. Previous studies have implied male-biased dispersal among wolverine populations on an interpopulation scale. We suggest 3, not exclusive, explanations to reconcile these differences: low power to detect sex biases in dispersal tendencies in this panmictic population; a scale-dependent component in dispersal tendencies, where males are overrepresented among interpopulation migrants; and lower reproductive success for dispersing females compared to more philopatric ones.

Place, publisher, year, edition, pages
2007. Vol. 88, no 3, 793-800 p.
Keyword [en]
carnivore, genetics, Gulo gulo, isolation by distance, mustelid, social structure, spatial patterns, wolverine
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URN: urn:nbn:se:su:diva-56247ISI: 000247110100028OAI: diva2:410305
authorCount :5Available from: 2011-04-13 Created: 2011-04-12 Last updated: 2011-04-13Bibliographically approved

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