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Age and body size of Japanese eels, Anguilla japonica, at the silver-stage in the Hamana Lake system, Japan
https://doi.org/10.15083/00040623
https://doi.org/10.15083/00040623c49dd178-3c41-4922-80aa-5f15792f6c34
名前 / ファイル | ライセンス | アクション |
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CMS360102.pdf (517.1 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2014-09-03 | |||||
タイトル | ||||||
タイトル | Age and body size of Japanese eels, Anguilla japonica, at the silver-stage in the Hamana Lake system, Japan | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Silver eel | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | growth rates | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | body size | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | otolith microchemistry | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | salinity | |||||
主題Scheme | Other | |||||
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 | 10.15083/00040623 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Sudo, Ryusuke
× Sudo, Ryusuke× Fukuda, Nobuto× Aoyama, Jun× Tsukamoto, Katsumi |
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著者所属 | ||||||
著者所属 | Faculty of Marine Science, Tokyo University of Marine Science and Technology | |||||
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 | College of Bioresource Science, Nihon University | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Effects of salinity-different habitats on growth rate, age and body size of Japanese eels at the silver-stage were investigated. Fish were sampled in one drainage system, that includes the brackish Hamana Lake and its inlet freshwater rivers, and were evaluated using otolith strontium:calcium (Sr : Ca) analysis to determine whether the eels had been living in estuarine or freshwater habitats. The growth rate of estuarine eels was found to be significantly higher than that of river eels for both females and males. In male silver eels, there was no difference in age between estuarine and river eels, but the total length and body mass (BM) of estuarine eels were significantly larger than river eels. In female silver eels, the age of river eels was significantly older than those of estuarine eels and the BM of river eels was significantly greater than in estuarine eels. These results indicate that effects of habitat use and salinity differences on age and body size at the silver-stage were different between female and male eels in this system. | |||||
書誌情報 |
Coastal marine science 巻 36, 号 1, p. 13-18, 発行日 2013-12 |
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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 | |||||
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 |