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Population dynamics of five rodent species were studied, from March 1991 to August 1994, in an area located in the ecotonal steppe of northwestern Patagonia, Argentina {at about 40°S). Seasonal and annual fluctuations in population numbers were found in all sigmodontine species. The reproductive period, sex ratio and longevity of the five species were also studied. Abrothrix xanthorhinus (Waterhouse,...
We investigated the propensity for wild muskoxen Ovibos moschatus (Zimmerman, 1780) to exhibit right or left bias in foreleg use while foraging during winter. We found little evidence of such latéralisation, either on the individual or population level. Only 3 of 40 animals exhibited significant right- or left-footedness, and the distribution across the population for use of either limb was near 50%...
The home range size, spacing pattern and intraspecific relations in the lynx Lynx lynx (Linnaeus, 1758) were studied in Białowieża Primeval Forest (eastern Poland), in 1991-19S6. Eighteen lynx (11 males and 7 females) were captured and radio-collared. The mean autumn-winter home range size was 165 km2 for males and 94 km2 for females. In spring-summer, it was 143 and 55 km2, respectively. The mean...
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