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ネズミイルカの流し網への羅網過程に関する実験
https://fra.repo.nii.ac.jp/records/2007959
https://fra.repo.nii.ac.jp/records/2007959f6554060-1fe6-403c-8aab-1a427d2a9bd0
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-06-19 | |||||||||||
| タイトル | ||||||||||||
| タイトル | ネズミイルカの流し網への羅網過程に関する実験 | |||||||||||
| 言語 | ja | |||||||||||
| タイトル | ||||||||||||
| タイトル | Process of Harbor Porpoise's Entanglement in the Gill Net | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | article | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | metadata only access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||||||
| 著者 |
赤松, 友成
× 赤松, 友成
× 畠山, 良己
× 石井, 憲
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | In the Bering sea and Northern Pacific Ocean, Dall's porpoises Phocoenoides dalli get entangled in gill nets. To reduce the number of entangled porpoises, we researched the mechanism of porpoise's entanglements. We used Harbor porpoises Phocoena Phocoena in the coastal area of Hokkaido, Japan. Harbor porpoises are of the same family as Dall's porpoises. We observed the porpoise's behavior in the net enclosure in which we set the gill net, the float line, as well as the rope. The results may be summarized as follows: Harbor porpoises can recognize the gill net at daytime, if they are aware of it. At night, porpoises can also recognize the gill net, if they have already know the existence of it. Porpoises can easier recognize a line than a netting. The fin of porpoises get entangled in the gill net. When they obliquely thrust into the gill net, they get entangled in it. The food causes reduction of porpoises' cautiousness. The source level of porpoise's clicks is in the range 125 to 150dB. | |||||||||||
| 言語 | en | |||||||||||
| bibliographic_information |
ja : 水産工学研究所技報. 漁業生産 en : Technical report of National Research Institute of Fisheries Engineering. Fishing gear and methods 巻 5, p. 25-36, ページ数 12, 発行日 1991-03 |
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| 出版者 | ||||||||||||
| 出版者 | 水産工学研究所 | |||||||||||
| 言語 | ja | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | National Research Institute of Fisheries Engineering | |||||||||||
| 言語 | en | |||||||||||
| item_10002_source_id_9 | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0289-5153 | |||||||||||
| item_10002_source_id_11 | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00048467 | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | nrife_gs_5_25 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010500882 | |||||||||||
| 言語 | ja | |||||||||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||||||||
