鳳凰山の小哺乳類に関する二,三の知見

概要

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The authers collected small mammals in two areas surronding Minamiomuro (2500m. alt.) and Hoo (2400m. alt.) cottages of Mt. Hoo in the South Alps of Japan, The vegetation of Minamiomuro area is a mixed forest consisting chiefly of Tsuga diversifolia and Abies veitchii. Hoo area is covered mainly by Betula ermanii forest. Collecting was carried out during September 4-7, 1967, using snap traps and an oil can. From these investions, 7 species of insectivores and rodents were collected, including one species which had never before been collected in the South Alps district. The collected specimens are shown in Table 1-4. The following observations seem to be especially noteworthy; 1) Two species of Sorex, S. hosonoi and chouei, were collected in a same area. 2) . One specimen of Urotrichus hondonis was collected with eight specimens of Dymecodon pirilostris in Hoo area. As they are allopatric each other and Urotrichus is generally confined to lowmountain zones, this evidence may be important to clarify the competition between them, to be a new record to this region of the South Alps.
日本哺乳類学会の論文