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Life history patterns of silver eels Anguilla japonica collected in the Sanriku Coast of Japan
https://doi.org/10.15083/00040714
https://doi.org/10.15083/00040714e3b4727c-a15b-4d95-b363-78ae8656cd9a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
CMS320108.pdf (121.9 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-02-18 | |||||
| タイトル | ||||||
| タイトル | Life history patterns of silver eels Anguilla japonica collected in the Sanriku Coast of Japan | |||||
| 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 | migration | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | otolith Sr : Ca ratios | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | marine resident | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | silver eels | |||||
| 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 | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/00040714 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
CHINO, Naoko
× CHINO, Naoko× YOSHINAGA, Tatsuki× HIRAI, Akio× ARAI, Takaomi |
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| 著者所属 | ||||||
| 値 | School of Marine Biosciences, Kitasato University | |||||
| 著者所属 | ||||||
| 値 | International Coastal Research Center, Ocean Research Institute, The University of Tokyo | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The migratory history in the silver eel stage of the Japanese eel, Anguilla japonica, collected in the mouth of Kozuchi River along the Sanriku Coast of Japan, was examined using the otolith microstructure and analysis of strontium (Sr) and calcium (Ca) concentrations with wavelength dispersive X-ray spectrometry by an electron microprobe. The line analysis of Sr :Ca ratios along the life history transect of each otolith showed a peak (ca 12-15×10<-3>), which corresponded to the period of their leptocephalus and early glass eel stages in the ocean. The mean Sr : Ca ratios from the elver mark to the otolith edge indicated that there were eels with several general categories of migratory history, that included sea eels that never entered freshwater (average Sr : Ca ratios, >_6.0×10<-3>) and others that had entered freshwater for brief periods, but returned to the estuary or bay. This evidence of the occurrence of sea eels in this northern area indicates that Japanese eels of the Sanriku Coast do not necessarily migrate into freshwater rivers during recruitment as glass eels at the beginning of their growth phase, and even those that do enter freshwater may later return to the marine environment. | |||||
| 書誌情報 |
Coastal marine science 巻 32, 号 1, p. 54-56, 発行日 2008-08-20 |
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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 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 452 | |||||
| 出版者 | ||||||
| 出版者 | International Coastal Research Center, Ocean Research Institute, the University of Tokyo | |||||
| 出版者別名 | ||||||
| 値 | 東京大学海洋研究所国際沿岸海洋研究センター | |||||
