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Morphological changes and otolith growth during metamorphosis of Japanese eel leptocephali in captivity
https://doi.org/10.15083/00040668
https://doi.org/10.15083/00040668c6b69920-f4eb-4c30-8db8-8e1dbe6b1ab0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
CMS340105.pdf (1.3 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-05-25 | |||||
| タイトル | ||||||
| タイトル | Morphological changes and otolith growth during metamorphosis of Japanese eel leptocephali in captivity | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Anguilla japonica | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | leptocephalus | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | metamorphosis | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | morphology | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | otolith increment formation | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | survival | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | water temperature | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/00040668 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
Kuroki, Mari
× Kuroki, Mari× Fukuda, Nobuto× Yamada, Yoshiaki× Okamura, Akihiro× Tsukamoto, Katsumi |
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| 著者所属 | ||||||
| 著者所属 | The University Museum, The University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | Atmosphere and Ocean Research Institute, The University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | IRAGO Institute Co. Ltd | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | To know the morphological changes in body shape and otolith growth during metamorphosis of anguillid eel larvae, we observed the process of metamorphosis in artificially reared leptocephali of the Japanese eel Anguilla japonica that were reared at four different temperatures, 15, 20, 25 and 30℃ for 30 days. After the onset of metamorphosis, total length and relative preanal length decreased following the progress of metamorphosis. Relative body depth showed almost constant values at the early metamorphosis stage, but showed a rapid decrease at the late metamorphosis stage. Survival of the 11 leptocephali of each experimental group held at four different temperatures showed the highest rate of 81.8% at 25℃. Similarly, the number of leptocephali that completed metamorphosis to be glass eels was greatest at 25℃ (5 specimens), suggesting that the temperature of 25℃ facilitated the metamorphosis and survival of leptocephali. Otoliths drastically grew fast after the initiation of metamorphosis and deposited a mean width of 47.0μm during the 30 days of the experimental period, while otoliths of non-metamorphosed leptocephali showed only a slight mean increase of 11.2μm during the same one-month period. These results are the first demonstration of morphological change and otolith deposition during the metamorphosis process in anguillid eels. | |||||
| 書誌情報 |
Coastal marine science 巻 34, 号 1, p. 31-38, 発行日 2010-08-20 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 13493000 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11957899 | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 452 | |||||
| 出版者 | ||||||
| 出版者 | International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo | |||||
| 出版者別名 | ||||||
| 東京大学大気海洋研究所国際沿岸海洋研究センター | ||||||
