Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1998-02-01 |
タイトル |
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タイトル |
FEEDING RATE AND DAILY ENERGY INTAKE OF DALL'S PORPOISE IN THE NORTHEASTERN SEA OF JAPAN (19th Symposium on Polar Biology) |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Dall's porpoise |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Phocoenoides dalh |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
feeding rate |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
energy intake |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
stomach contents |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00005365 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
記事種別(英) |
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en |
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Proceeding |
論文名よみ |
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その他のタイトル |
FEEDING RATE AND DAILY ENERGY INTAKE OF DALL'S PORPOISE IN THE NORTHEASTERN SEA OF JAPAN (19th Symposium on Polar Biology) |
著者名よみ |
オオイズミ, ヒロシ
ミヤザキ, ノブユキ
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著者名(英) |
OHIZUMI, Hiroshi
MIYAZAKI, Nobuyuki
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著者所属(英) |
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en |
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Otsuchi Marine Research Center, Ocean Research Institute, The University of Tokyo |
著者所属(英) |
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en |
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Otsuchi Marine Research Center, Ocean Research Institute, The University of Tokyo |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
We examined thirty stomachs of Dall's porpoises (Phocoenoides dalli) collected on board a hand harpoon fishery vessel in the Sea of Japan off Hokkaido in May 1995 Maximum ratio of stomach content weight to body weight of the sated animals (MRSCW, 1 68%) was recorded early in the morning, and average of the ratio decreased in the daytime T TOBAYAMA (Studies on the feeding habits of the little toothed whales. Ph. D. thesis, Umv Tokyo, 1974) reported that digestion time was eight hours from full stomach to empty on captive Tursiops gilli and Delphmus delphis The eight hour digestion profile was almost middle of the possible digestion time range found in this study. Assuming that the digestion time was eight hours, maximum daily digestible food intake was estimated at 5.04% (MRSCW×24/8) of body weight. This value is between the feeding rate indirectly obtained from the biological concentration rate of mercury in the wild Dall's porpoise (2-3%), and that directly measured from a captive porpoise (12 5%) Daily intake of energy was calculated as 27 2MJ for a 108kg Dall's porpoise from prey energy density, weight contribution rate of prey and 5% feeding rate. This is close to 25 5MJ of the daily energy requirement calculated by the allometnc method using body weight. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10819561 |
書誌情報 |
Proceedings of the NIPR Symposium on Polar Biology
巻 11,
p. 74-81,
発行日 1998-02
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出版者 |
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出版者 |
National Institute of Polar Research |