Levels of social tolerance between snow voles Chionomys nivalis during over-wintering periods

摘要: We examined winter social behaviour of the snow voleChionomys nivalis Martins, 1842, a rock-dwelling microtine found principally in high-mountain biotopes. conducted dyadic encounters among wild-caughtC. to determine patterns intraspecific tolerance and degree aggressiveness between within sexes during wintering periods. Our data show high frequency agonistic behaviours all encounters. Male pairs spent less time being aggressive than female but more investigative behaviours. In contrast, intensity aggression displayed interactions was significantly higher male-male female-female encounters, with an intermediate level male-female The low seems be agreement available on organization this species further suggests that individuals may not spatially associate over-wintering Although both males females were socially intolerant, different observed underlie strategies.