Investigating population density and habitat use of the introduced Japanese weasel

A research team led by Professor Eiji Inoue from the Department of Biology, Faculty of Science, Toho University have conducted a study on the Japanese weasel (Mustela itatsi). The Japanese weasel is an endemic species to Japan, but it was intentionally introduced to a number of non-native islands and its naturalization on some islands has resulted in severe negative consequences to the local ecosystems.