著者

吉行 瑞子

出版者

国立科学博物館

雑誌

自然教育園報告 (ISSN:0385759X)

巻号頁・発行日

vol.34, pp.157-162, 2002-06

被引用文献数

1

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The tunnel of Mogera wogura wogura (Temminck, 1843) was investigated at a cold temperature forest zone in Tsukuba Botanical Gardens, Ibaraki Prefecture. Japan, on 27-28 April, 1988. The research area was 24m^2 (6x4m). A cast of tunnel was made with plaster mixed with water; the diameter of the tunnel was measured in crosssection of the cast. The result revealed that the species makes the larger tunnel (average 56mm in diameter), difference from the other species so far known, e.g. Talpa europaea Linnaeus, 1758. The depth of the tunnel was also measured from the surface of the ground to the bottom of the tunnel. Three types of depth of tunnel were detected I.e., shallow (40-90 mm), medium (100-210mm), and deep tunnels (280-420mm). Among them, the medium type was found to be more dominant than the shallow and deep tunnels. The fortress with a nest charnber recorded in Talpa europaea were noto observed.