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Effects of larval ontogeny, turbulence, and prey density on survival in red sea bream Pagrus major larvae
https://doi.org/10.15083/00040661
https://doi.org/10.15083/0004066190296a78-af73-4ba3-955c-9a2578ee7d83
名前 / ファイル | ライセンス | アクション |
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CMS350136.pdf (711.2 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2012-05-25 | |||||
タイトル | ||||||
タイトル | Effects of larval ontogeny, turbulence, and prey density on survival in red sea bream Pagrus major larvae | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | red sea bream | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | oceanic turbulence | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | energy dissipation rate | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | RNA/DNA ratio | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Pacific bluefin tuna | |||||
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 | 10.15083/00040661 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Kato, Yoshiki
× Kato, Yoshiki× Ohshima, Masakane× Yamashita, Yoh× Kitagawa, Takashi× Kimura, Shingo |
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著者所属 | ||||||
著者所属 | Fisheries Research Agency, National Research Institute of Far Seas Fisheries | |||||
著者所属 | ||||||
著者所属 | Maizuru Fisheries Research Station, Field Science Education and Research Center, Kyoto University | |||||
著者所属 | ||||||
著者所属 | Atmosphere and Ocean Research Institute, The University of Tokyo | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The effect of turbulence on red sea bream larvae survival was tested at two prey densities and four turbulence levels in the laboratory for red sea bream. The effect of ontogenic stage on feeding behavior parameters was examined. The range of turbulence at which red sea bream larvae could survive and ingest prey increased with larval growth. Therefore, turbulence is an important condition impacting survival of small larvae during the initial period of feeding. At low prey density, larvae fed at the highest feeding rate and had a high RNA : DNA ratio at a medium turbulence level on the order of 10(-6.5)m2s(-3). Thus, an optimum turbulence level induces faster growth, and it can be concluded that turbulence plays an important role in larval growth and survival. For interspecific comparison, a feeding success index calculated by numerical modeling in sea bream was compared to that of Pacific bluefin tuna using data reported by Kato et al. (2008). There were large differences in the index. The equivalent curve for red sea bream showed a linear relationship, while that for Pacific bluefin tuna showed a dome-shaped relationship. These results suggest that open-ocean-dwelling Pacific bluefin tuna likely prefer prey that is moving and under conditions of moderate turbulence. Further, tuna requires a greater degree of turbulence during initial feeding periods than does red sea bream. | |||||
書誌情報 |
Coastal marine science 巻 35, 号 1, p. 262-268, 発行日 2012-03-20 |
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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 | 452 | |||||
主題Scheme | NDC | |||||
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 |