Please use this identifier to cite or link to this item:
http://hdl.handle.net/2282/1198
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| Title: | Sex-biased dispersal in a northern ungulate population |
| Authors: | Haanes, Hallvard
Røed, Knut H.
Rosef, Olav |
| Issue Date: | 2011 |
| Abstract: | In most mammals dispersal is male-biased and in many polygynous ungulates female philopatry and matrilineal grouping involve small-scale genetic structure. We have through sex-related differences in microsatellite allele distribution addressed sex-biased dispersal in a spatially expanding northern ungulate population. The Norwegian red deer
population (Cervus elaphus atlanticus) has the last hundred years grown substantially and expanded spatially after a major
decline from 300 to 100 years ago. Previous Bayesian analyses suggest a present division of genetic variation into five
geographically separated subpopulations. Among these subpopulations the overall F
st
values were 0.067 (SE=0.014) for
males and 0.094 (SE=0.017) for females. Pairwise F
st
values were significantly higher for females than males, demonstrating a stronger genetic structure among females, and that dispersal has been lower in females than males. Accordingly, a higher number of male than female first generation dispersers were identified among the five subpopulations
using Bayesian assignment with prior population information, but significantly so only with relaxed stringency levels
of assignment. The identified male-biased dispersal distances varied from 30 to 300 kilometers suggesting male biased
dispersal on a large scale in red deer. |
| Keywords: | Bayesian assignment
Cervus elaphus
Norwegian deer
range expansion
sex-biased dispersal |
| Document type: | Journal article |
| Peer reviewed: | Peer reviewed |
| Licence: | Licenced under a Creative Commons licence |
| Appears in Collections: | Institutt for natur-, helse- og miljøvernfag
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