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A Fundamental Study on the Behaviour of Milkfish Fry for Improving the Efficiency of Traditional Fry Collecting Gear in the Philippines
http://hdl.handle.net/10232/15594
http://hdl.handle.net/10232/15594e9706970-73ba-4ae9-a7b6-0ab53da6e8ae
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00182029_v1-1_P65-74.pdf (6.5 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-01-22 | |||||
| タイトル | ||||||
| タイトル | A Fundamental Study on the Behaviour of Milkfish Fry for Improving the Efficiency of Traditional Fry Collecting Gear in the Philippines | |||||
| タイトル言語 | en | |||||
| 著者 |
川村, 軍蔵
× 川村, 軍蔵× HARA, Shiro× BAGARINAO, Teodora |
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| 言語 | ||||||
| 言語 | eng | |||||
| 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 | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The reaction of milkfish fry to moving and stationary nets of different meshes and colors in an experimental tank was determined. The underwater visibility of the nets was measured and the water filtration in a fry-sweeper was observed. Milkfish fry were both driven well by the moving nets and retained well by the stationary nets, with the fine-meshed black net most effective in both cases. The white and blue nets were found to be quite invisible to the fry in the blue-painted tank, particularly under contour lighting conditions; the black net was found to be very visible to the fry under both surface and contour light. The underwater visibility of the nets was found to vary with the sea conditions and the light direction. Water filteration in the fry-sweeper was found to be almost perfect. From the results, it was concluded that milkfish fry are caught by the moving fry collecting gear through driving and not by filtering. Since fry collection grounds are usually turbid, it was recommended that dark-colored materials be used for effective driving. It is also deemed much better to use larger mesh nets in the wings of the fry gear to minimize net resistance in the water and facilitate operation. |
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| 内容記述言語 | en | |||||
| 収録雑誌名 |
ja : 南総研紀要 en : Memoirs of the Kagoshima University Research Center for the South Pacific 巻 1, 号 1, p. 65-74, 発行日 1980-12-25 |
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| 作成日 | ||||||
| 日付 | 1980-12-25 | |||||
| 日付タイプ | Issued | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| ISSN | 03895351 | |||||
| NII書誌ID（雑誌） | ||||||
| 収録物識別子タイプ | NCID | |||||
| NC ID | AN00182029 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| NDC | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 660 | |||||
| 公開者・出版者 | ||||||
| 出版者 | 鹿児島大学 | |||||
| 出版者言語 | ja | |||||
| 公開者・出版者 | ||||||
| 出版者 | Kagoshima University | |||||
| 出版者言語 | en | |||||
