書誌事項
- タイトル別名
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- Carbon and nitrogen stable isotope evidence for the involvement of a captured Asiatic black bear in damages at a rainbow trout farm
- チッソ タンソ アンテイ ドウイタイ ニ ヨル ツキノワグマ ホカク コタイ ノ ヨウギョジョウ ニジマス カガイ リレキ ノ スイテイ
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An adult male Asiatic black bear (Ursus thibetanus), 105 kg in body weight and 130 cm in total length, was captured at a fish farm in Miyadamura village, Nagano Prefecture, Japan in June 2005, due to its nuisance activity. We analyzed δ13C and δ15N in the hairs and plasma of the bear and in the muscles of rainbow trouts (Oncorhynchus mykiss) at the farm to discern whether the bear was actually involved in the farm damages. Both δ13C and δ15N values in the hairs and plasma were similar to those in rainbow trout muscles, confirming that the bear indeed ate a considerable number of the farm's rainbow trouts. The δ13C and δ15N values of serum were closer to those of the trout muscles than those of the hairs, indicating that the bear depended heavily on trouts in the spring of 2005 in comparison with the previous year. Moreover, stable isotope levels in the tips of the hairs were closer to those of trout muscles than those at the bases of the hairs. This suggests that the bear depended much more heavily on trouts in the previous spring than in the previous fall.<br>
収録刊行物
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- 哺乳類科学
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哺乳類科学 47 (1), 19-23, 2007
日本哺乳類学会
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詳細情報 詳細情報について
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- CRID
- 1390282679701080448
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- NII論文ID
- 10019587180
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- NII書誌ID
- AN00231656
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- ISSN
- 1881526X
- 0385437X
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- NDL書誌ID
- 8881975
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可