1. Department of Natural History Sciences Graduate School of Science Hokkaido University Sapporo Japan
2. Department of Biological Sciences Graduate School of Science Hokkaido University Sapporo Japan
3. Zoological Institute Russian Academy of Sciences Saint Petersburg Russia
4. Russian Research Institute of Game Management and Fur Farming Kirov Russia
5. Institute of Plant and Animal Ecology, Ural Branch Russian Academy of Sciences Ekaterinburg Russia
6. Federal Scientific Center of the East Asia Terrestrial Biodiversity Far Eastern Branch of the Russian Academy of Sciences Vladivostok Russia
7. Agricultural Faculty Trakia University Stara Zagora Bulgaria
8. Finnish Museum of Natural History University of Helsinki Helsinki Finland
9. Carnivore Ecology and Conservation Research Group Tokyo University of Agriculture and Technology Tokyo Japan