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アイテム
北日本沿岸におけるウニおよびアワビの摂食に及ぼす波浪の影響とその評価
https://fra.repo.nii.ac.jp/records/2010765
https://fra.repo.nii.ac.jp/records/20107655ebfcce7-a87a-4c49-aaab-5ed223b0c634
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fra_k_1_59.pdf (1.5 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
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| 公開日 | 2024-10-02 | |||||||||||
| タイトル | ||||||||||||
| タイトル | 北日本沿岸におけるウニおよびアワビの摂食に及ぼす波浪の影響とその評価 | |||||||||||
| 言語 | ja | |||||||||||
| タイトル | ||||||||||||
| タイトル | Effect of Waves on Grazing by Sea Urchins and Abalone on the Coast of Northern Japan | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Abalone; Algal recruitment; Barrens; Grazing; Kelp bed; Sea urchin; Waves; Water velocity | |||||||||||
| 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 | departmental bulletin paper | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | open access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| 著者 |
川俣, 茂
× 川俣, 茂
WEKO
474
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Laboratory and field studies were conducted to explore the effect of wave-induced water motion on grazing by commercially important sea urchins Strongylocentrotus nudus, S. intermedius and abalone Haliotis discus hannai as an important mechanism regulating their distribution and the abundance of food algae on the coast of northern Japan. Oscillating-flow-tank experiments conducted at moderate temperatures（10-15˚C）indicated that grazing on a leaf-like kelp by sea urchins was nearly impossible when water velocity amplitude, Umax, was only about 0.4m/s. This velocity limit for grazing was considerably lower than that for movement（approximating 0.7m/s）because of their unstable grazing posture. In contrast, H. discus hannai could graze on adult kelp of Undaria pinnatifida at much higher velocities（Umax>0.9m/s）. Flow-tank experiments simulating natural subtidal areas with a depth gradient of water velocity showed that S. nudus could graze freely on small juvenile algae where Umax<0.3m/s but could scarcely crawl into areas with Umax>0.45m/s at temperatures of 4-13˚C. This result and observations in Oshoro Bay on the Japan Sea coast of Hokkaido, which was characterized by shallow algal and deep S. nudus-dominated barren zones, suggested that wave-induced limitation of sea urchin grazing would lead to colonization by algae of barren areas even adjacent to large aggregation of sea urchins if the frequency of Umax<0.4m/s remains at <0.5 from the settlement of spores to establishment of kelp beds. S. nudus are susceptible to the whiplash effect of kelp blades swaying under waves so that they never move into dense kelp stands and graze only on the peripheral plants during periods of calm seas. A laboratory flow-tank experiment with kelp beds showed that S. nudus were completely dispersed from dense Laminaria stands when Umax>0.2m/s. Although S. intermedius had higher tolerance to water motion independent of temperature, they rarely graze even on small juvenile algae for Umax>0.4m/s. In contrast, S. intermedius appeared less susceptible to the whiplash effect of blades than S. nudus: they moved into dense Laminaria beds and remained there for Umax<0.25-0.30m/s. H. discus hannai have highest tenacity to water motion but lowest resistance to low temperature. The abalone remains at areas with least water motion fat low temperature up to 10˚C if food algae are there. For higher temperalture with established kelp beds, the tank-flow experiment showed that foraging by H. discus hannai dramatically become active regardless of water motion of <0.6m/s. This result is consistent with the observation that the abalone occurred only inside a dense Laminaria bed in Oshoro Bay. Monthly averaged probabilities of Umax<0.4n/s and <0.2m/s were estimated from 19-20 year long offshore wave data along the Japan Sea coast of southwestern Hokkaido and along the Sanriku,（northeastern Pacific）coast of Honshu, where food algae have been often limited by overgrazing by Strongylocentrotus nudus. The estimates partially explain the marked differences in physical disturbances and food availability to abalone and sea urchins between the two coasts. The paper describes the importance of wave-induced physical disturbance in abalone and sea urchin aquaculture and in artificial development of kelp beds in sea urchin-dominated barren areas. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
ja : 水産総合研究センター研究報告 en : Bulletin of Fisheries Research Agency 巻 1, p. 59-107, ページ数 49, 発行日 2001-12 |
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| 出版者 | ||||||||||||
| 出版者 | 水産総合研究センター | |||||||||||
| 言語 | ja | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 1346-9894 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA11589591 | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | fra_k_1_59 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010642435 | |||||||||||
| 関連名称 | 日本農学文献記事索引（AgriKnowledge） | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
