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ウナギの磁気感覚と磁気コンパス定位に関する研究
http://hdl.handle.net/10232/00032096
http://hdl.handle.net/10232/000320961a6d47b2-aa25-4873-a147-e583b0b5ae8a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00040498_55(2)_p107-159 (59.8 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-08-31 | |||||
| タイトル | ||||||
| タイトル | ウナギの磁気感覚と磁気コンパス定位に関する研究 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Studies on the Magnetosensitivity and Magnetocompass Orientation in the Japanese Eel Anguilla japonica | |||||
| タイトル言語 | en | |||||
| 著者 |
西, 隆昭
× 西, 隆昭 |
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| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Japanese eel | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | yellow eel | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | glass eel | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | magnetosensitivity | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | magnetocompass | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | migration | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | electrocardiogram conditioning | |||||
| 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 spawning area of Japanese eels {Anguillajaponica) has been found to be west of the Marianas, close to the North Equatorial Current. After 5 to 8 years growing at sea off eastern and northeastern Asia, adult eels migrate thousands of kilometers to their spawning area. This study was carried out to obtain evidence for the hypothesis that Japanese eels are sensitive to magnetic fields and that they can use the geomagnetic field as a cue for long distance migration to the spawning area. Magnetosensitivity of the Japanese eel was determined by conditioning and electrocardiography. Marine eels, river eels, farmed eels and glass eels showed typical conditioned cardiac responses to the artificial magnetic fields, indicating that these Japanese eels may also be highly magnetosensitive and probably acquire geomagnetic information early in life. Japanese eels made anosmic by injection of boiling petroleum jelly into their nares lost the magnetosensitivity, suggesting that they have a magnetosensitive organ in or around the nares. Yellow eels conditioned to choose a north shelter in an indoor testing tank placed under geomagnetic field. The conditioned eels were shifted their preference to north-east shelter or showed shelter choice in random directions when the geomagnetic field was shifted easterly by the application of an artificial magnetic field. Glass eels released in atesting tank preferred to escape in the north-east direction under the geomagnetic field, and showed random orientation when the direction of the geomagnetic field was artificially shifted. These results indicate that the Japanese eel is able to orient itself by means of geomagnetic cues. From these results, it can be hypothesized that silver-phase adult eels find their way back to their oceanic spawning ground byreversing the geomagnetic direction that had been detected and ' memorized' during their glass eel phase, when migrating from the open ocean towards the continental shelf and coastal waters. | |||||
| 内容記述言語 | en | |||||
| 収録雑誌名 |
ja : 鹿児島大学水産学部紀要 en : Memoirs of Faculty of Fisheries Kagoshima University 巻 55, 号 2, p. 107-159, 発行日 2006-12-25 |
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| 作成日 | ||||||
| 日付 | 2006-12-25 | |||||
| 日付タイプ | Issued | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| ISSN | 0453087X | |||||
| NII書誌ID（雑誌） | ||||||
| 収録物識別子タイプ | NCID | |||||
| NC ID | AN00040498 | |||||
| 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 | |||||
| 備考 | ||||||
| 備考言語 | ja | |||||
| 備考 | 東京大学学位審査論文（2006年9月）。執筆者は水産学部教員。 | |||||
