Factors Affecting the Distribution of the Japanese WeaselMustela itatsiand the Siberian WeaselM. sibiricain Japan

The vertical distribution of introduced Siberian weasels Mustela sibirica and endemic Japanese weasels M. itatsi in the Seburi Mountains in Kyushu, Japan, was examined from October 1996 to February 1998. Siberian weasels occurred near villages with paddy and cultivated fields, whereas Japanese weasels occurred in grasslands and plantations. The dispersion of yearlings destabilized the distributions of both weasel species. The horizontal...