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首页> 外文期刊>Journal of oceanography >Metabolism and chemical composition of pelagic decapod shrimps: synthesis toward a global bathymetric model
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Metabolism and chemical composition of pelagic decapod shrimps: synthesis toward a global bathymetric model

机译：浮游十足虾的代谢和化学成分：合成全球测深模型

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Respiration, ammonia excretion and chemical composition data [water content, ash, carbon (C), nitrogen (N) and C:N ratios] of 16-43 pelagic decapods from epi-pelagic 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 (respira-tion: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.
机译：汇编了从上层远洋到世界海洋的深海带的16-43个浮游十足动物的呼吸，氨气排泄和化学成分数据[水含量，灰分，碳（C），氮（N）和C：N比]。对于呼吸而言，包括身体干重，生境温度和采样深度在内的自变量都是经验回归模型的重要预测指标，而前两个变量是理论回归模型的重要预测指标。对于氨的排泄，身体干重和栖息地温度是两个回归模型的重要预测指标。总体而言，这些变量占数据方差的68-87％。原子O：N比率（呼吸：氨气排泄）范围为9.1至91（中值16.4），并且未检测到这三个变量的明显影响。除栖息地温度对灰分的正向影响和采样深度对氮组分的负向影响外，这三个变量均未对人体组成成分产生显着影响。通过C：N比值​​判断，蛋白质被认为是大多数浮游十足动物的主要有机成分。一些深度大于500 m的浮游十足动物显示出高的C：N比（8.6-10.2），表明脂质在体内沉积。将当前结果与虾青虾和类腮腺的全球水深模型进行比较后发现，这些中上层甲壳类群具有很大的相似性，它们具有共同的行为和形态特征，例如活跃的游泳，发达的复眼和呼吸respiratory器官。

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