Please use this identifier to cite or link to this item:
http://hdl.handle.net/2282/337
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| Title: | Use of space and movement patterns in monogamous adult Eurasian beavers (Castor fiber) |
| Authors: | Herr, Jan
Rosell, Frank |
| Issue Date: | 2004 |
| Publishers version: | http://dx.doi.org/10.1017/S0952836903004606 |
| Abstract: | Monogamy in mammals is characterized by reduced sexual dimorphism in morphology and behaviour. Ten pairs of
Eurasian beaver Castor fiber were radio-tracked to test how far this concept can be applied to movement behaviour
by focusing on sex-related effects on territory sizes and movement patterns. Within monogamous pairs, males and
females occupied territories of almost equal size during the whole radio-tracking period and more specifically after
parturition. The territories of pair members overlapped on average by 81.6±14.0% SD while the territory overlap
between residents and their neighbours was small to non-existent (on average between 0.5% and 2.2%). Males
had larger 95% utility distributions than did females during the whole tracking period and after parturition. There
was no significant difference between the 50% utility distributions for both sexes. Furthermore, males and females
spent equal proportions of their time in territory border zones. There was a non-significant trend for males to move
greater distances at night than females. Nightly distance moved correlated positively with territory size in females
but not in males. Nightly distance moved correlated with neither body weight nor colony size. These results suggest
that beavers show reduced sexual dimorphism in space use and movement patterns within adult monogamous pairs. |
| Keywords: | Beavers
Distance moved
Monogamy
Radio-tracking
Territory |
| Publisher: | Cambridge University Press |
| Document type: | Journal article |
| URI: | http://hdl.handle.net/2282/337 |
| Appears in Collections: | Institutt for natur-, helse- og miljøvernfag
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