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Role of the cortisol on the onset of downstream migration in hatchery reared chum salmon Oncorhynchus keta fry
https://doi.org/10.15083/00040730
https://doi.org/10.15083/00040730f81f0315-dd8c-4e72-90d2-60e8c5a8c9de
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2008-10-17 | |||||
タイトル | ||||||
タイトル | Role of the cortisol on the onset of downstream migration in hatchery reared chum salmon Oncorhynchus keta fry | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | chum salmon | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | cortisol | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | downstream migration | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Oncorhynchus keta | |||||
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 | 10.15083/00040730 | |||||
ID登録タイプ | JaLC | |||||
著者 |
OJIMA, Daisuke
× OJIMA, Daisuke× YOSHINAGA, Tatsuki× HARADA, Masafumi× IWATA, Munehico |
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著者所属 | ||||||
著者所属 | Laboratory of Ecophysiology, School of Fisheries Sciences, Kitasato University | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The relationship between downstream migration and plasma cortisol (F) level in chum salmon fry was investigated. The releases of chum fry (age 0, BW: 0.8.1.8 g) were carried out twice either in a day and a night. Approximately a million individuals of chum fry were released from the hatchery raceways to a hatchery pool, and the fry schools spontaneously moved down from the pool to the hatchery creek. The fish were sampled in the raceways (initial: before the migration), in the pool (staying: preparing period for the onset of migration), and in the creek (migrating: immediately after onset of the migration). The plasma concentrations of the migrating fry were significantly higher than those of the staying fry at 1 h after the releases in both the day- and the night-release. In addition, the F levels of the staying and migrating fry in the night-released were significantly higher than those of the day-released. Results can be interpreted that the F secretion ability may active with higher stress sensitivity in night. Chum fry show the downstream migration in nighttime in the early migratory season. Thus, the cortisol can relate to the onset of the downstream migration in the chum salmon fry. | |||||
書誌情報 |
Coastal marine science 巻 31, 号 1, p. 47-52, 発行日 2007-06-25 |
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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 | 452 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | International Coastal Research Center, Ocean Research Institute, the University of Tokyo | |||||
出版者別名 | ||||||
東京大学海洋研究所国際沿岸海洋研究センター |