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Metabolism and chemical composition of pelagic decapod shrimps: synthesis toward a global bathymetric model

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タイトル: Metabolism and chemical composition of pelagic decapod shrimps: synthesis toward a global bathymetric model
著者: Ikeda, Tsutomu 著作を一覧する
キーワード: ammonia excretion
decapods
CN composition
global-bathymetric model
O:N ratio
respiration
発行日: 2013年12月
出版者: Springer
誌名: Journal of Oceanography
巻: 69
号: 6
開始ページ: 671
終了ページ: 686
出版社 DOI: 10.1007/s10872-013-0200-x
抄録: espiration, ammonia excretion and chemical composition data [water content, ash, carbon (C), nitrogen (N) and C:N ratios] of 16–43 pelagic decapods from epipelagic through abyssopelagic zones of the world’s oceans were compiled. For respiration, the independent variables including body dry mass, habitat temperature and sampling depth were all significant predictors of the empirical regression model, whereas the former two variables were significant predictors of the theoretical regression model. For ammonia excretion, body dry mass and habitat temperature were significant predictors of both regression models. Overall, these variables accounted for 68–87 % of the variance in the data. Atomic O:N ratios (respiration:ammonia excretion) ranged from 9.1 to 91 (median 16.4), and no appreciable effects of the three variables were detected. Body composition components were not significantly affected by the three variables, except positive effects of habitat temperature on ash and negative effects of sampling depth on N composition. As judged by C:N ratios, protein was considered to be the major organic component of most pelagic decapods. Some pelagic decapods from >500 m depth exhibited high C:N ratios (8.6–10.2), suggesting a deposition of lipids in the body. Comparison of the present results with global bathymetric models of euphausiids and mysids revealed great similarities among these pelagic crustacean taxa characterized by common behavioral and morphological features such as active swimming, developed compound eyes and respiratory gill organ.
記述: The final publication is available at Springer via http://dx.doi.org/10.1007/s10872-013-0200-x
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/59726
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 池田 勉

 

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