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EN
Monogamous canid home range size is often negatively correlated with population density. Home range size, in turn, may be affected by the habitat. Here we examined landscape features that may affect home range size of the invasive raccoon dogNyctereutes procyonoides (Gray, 1834), an important vector of diseases and parasites in Europe. The aim was thus to reveal the habitats where population density and the risk for epizootics is highest. We radio tracked 42 raccoon dogs in three areas in southern Finland between 2001 and 2007. There was an inverse relationship between home range size and the proportions of meadows and gardens, as well as habitat richness. Also mixed forests were more common in areas where home ranges were small. The risk for epizootics, such as rabies, is thus highest in areas which constitute of a mosaic of small patches of meadows, gardens and mixed forests. The preventive measures, such as bait vaccinations, against epizootics should therefore be concentrated in these areas which are mainly in and around villages.
EN
The proportion of time that male and female raccoon dogs Nyctereutes procyonoides (Gray, 1834) spent at the den during pup rearing was studied in Finland using radio- tracking. Results were compared with the behaviour of some other canids. Male raccoon dogs spent even more time at the den than females, especially during the day when males remained almost 80% of the time at the den, but females only about 60%, The behaviour of males and females did not differ at night. Consequently, the behaviour of males differed at various times of day and night, but that of females did not. During the 1st month after birth pups were seldom left by themselves: during day both parents were often at the den, but at night only one of them was usually at the den. That males spend more time at the den with pups than females is common behaviour in the raccoon dog and the bat-eared fox Ofocyon megalotis. These canids feed on small food items that are difficult to carry to the den, especially if food is scarce and widely distributed. Instead, the female forages and nurses the pups, and the male guards the litter. In species with larger food items, the males usually carry food to the den. When food items are very large they cannot be carried to the den, but males and other pack members feed from the carcass and regurgitate food at the den.
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