乗鞍岳畳平で人身事故を引き起こしたツキノワグマの食性履歴の推定 ―安定同位体分析による食性解析―

中下 留美子; 鈴木 彌生子; 林 秀剛; 泉山 茂之; 中川 恒祐; 八代田 千鶴; 淺野 玄; 鈴木 正嗣

doi:10.11238/mammalianscience.50.43

Short Communications

Feeding habit analysis of an Asiatic black bear that attacked on humans in Mt. Norikura by stable isotopes

Rumiko Nakashita, Yaeko Suzuki, Hidetake Hayashi, Shigeyuki Izumiyama, Kousuke Nakagawa, Chizuru Yayota, Makoto Asano, Masatsugu Suzuki

Author information

Rumiko Nakashita
Shinshu Black Bear Research Group, NPO
Japan Certification Services, Inc.
Present address: Forestry and Forest Products Research Institute
Yaeko Suzuki
Japan Certification Services, Inc.
Hidetake Hayashi
Shinshu Black Bear Research Group, NPO
Shigeyuki Izumiyama
Shinshu Black Bear Research Group, NPO
Education and Research Center of Alpine Field Science, Faculty of Agriculture, Shinshu University
Kousuke Nakagawa
Faculty of Applied Biological Sciences, Gifu University
Chizuru Yayota
Doctoral Course of the United Graduate School of Veterinary Sciences, Gifu University
Makoto Asano
Faculty of Applied Biological Sciences, Gifu University
Masatsugu Suzuki
Faculty of Applied Biological Sciences, Gifu University

Keywords: Asiatic black bear, δ¹⁵N, δ¹³C, feeding history, bear attack

JOURNAL FREE ACCESS

2010 Volume 50 Issue 1 Pages 43-48

DOI https://doi.org/10.11238/mammalianscience.50.43

Details

Abstract

Carbon and nitrogen stable isotope ratios (δ¹³C and δ¹⁵N) were measured in hair samples from an Asiatic black bear (Ursus thibetanus) that mauled 10 humans at a bus station on the west slope of Mt. Norikura, in Gifu Prefecture, Central Japan on September 19th, 2009. Our objective was to examine the feeding history of the bear. The δ¹³C and δ¹⁵N values of the hair were similar to those of natural bears living in that area of the Northern Japan Alps, refuting all suspicion that this bear may have been a garbage habituated bear.

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