The use of nest boxes by the woodland dormouse, Graphiurus murinus, was investigated over a 13-month period in a riverine forest of the Great Fish River Reserve, South Africa. We predicted that some characteristics of nest box placement would affect nest box use and that the seasonal pattern of nest box use would be linked to the species' life cycle and physiological and socioecological characteristics. Generalized linear models indicated that the time since nest box installation and nest box height above ground positively affected the frequency and intensity of nest box use. Male and female dormice, as well as adults and juveniles, did not differ in the number of nest boxes used and equally occupied individual nest boxes. The percentage of nest boxes used peaked during spring and summer (breeding period) and dropped during winter (hibernation). However, whereas significantly more males were caught during the mating season (spring), the number of females occupying nest boxes was constant during the year. As female dormice successfully bred in the nest boxes, the observed sexual patterns suggest that (artificial) nest sites represent an important resource for females, whereas females seem to constitute the main resource for males, as predicted by the socioecological model.
We studied the socio-spatial organization of the woodland dormouse, Graphiurus murinus, by means of a monthly live-trapping and nest-box monitoring programme. Adult male (N = 5) home ranges were almost twice as large as those of females (N = 8), and both intra and intersexual home-range overlap was significantly larger in males than in females. However, the dispersion pattern of females was rather clumped, even during the breeding period, suggesting that females are not territorial. Sexual receptivity in females was asynchronous. In such circumstances, the Female in Space and Time hypothesis predicts that males will be non-territorial, a scenario which is matched by our data. Therefore, it is likely that the woodland dormouse has a promiscuous mating system.
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