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首页> 外文期刊>Marine biology >An approach to integrating specific dynamic action (SDA) with routine metabolism for improved estimation of the realistic metabolism of marine metazooplankton in the field
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An approach to integrating specific dynamic action (SDA) with routine metabolism for improved estimation of the realistic metabolism of marine metazooplankton in the field

机译：常规代谢集成特定动态动作（SDA）的方法，以改善田野Marine Metazooplankton逼真代谢的估计

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摘要

An increase in respiration (R-SDA) associated with food ingestion (I) was estimated from routine rates (R-routine) determined in the absence of food with sealed-chamber methods. Based on regression analyses of R-SDA on I for metazooplankton in the laboratory, the fraction of I allocated to R-SDA was calculated to be 0.10. Likely food ingestion of metazooplankton in the field (I-field) was derived from "basic balanced equations" in which parameters such as R-routine, laboratory-obtained food absorption efficiency (AE) and gross growth efficiency (K-1) were incorporated (I&M model). Based on differences in AE values, metazooplankton were separated into particle-feeders (herbivores, omnivores) and carnivores and R-SDA was computed to be 0.37 times R-routine for the former and 0.25 times R-routine for the latter. Hence, realistic respiration rates of metazooplankton feeding in the field (R-field = R-SDA + R-routine) accounted for 1.37 times R-routine for particle-feeders and 1.25 times R-routine for carnivores. The increase in ammonia excretion (E-SDA) accompanied by SDA in particle-feeders and carnivores was calculated from R-SDA coupled with carbon-to-nitrogen (C:N by mass) ratios of possible natural foods (6.5 for the former and 4.5 for the latter). Results indicated that E-SDA is 0.080 times R-SDA for particle-feeders, and 0.116 times R-SDA for carnivores.
机译：根据在没有用密封室方法的情况下确定的常规速率（R-常规）估计与食物摄取（I）相关的呼吸（R-SDA）的增加。基于R-SDA对实验室Metazooplankton的R-SDA的回归分析，计算分配给R-SDA的一部分为0.10。可能在田间（I字段）中的Metazooplankton的食物来自“基本平衡方程”，其中掺入了诸如R-常规，实验室的食物吸收效率（AE）和总增长效率（K-1）的参数（I＆M型号）。基于AE值的差异，Metazooplankton分离成颗粒饲养剂（草食物，omnivores）和肉食病毒，R-SDA被计算为前者的0.37倍的r-常规和后者的0.25倍的r-常规。因此，在现场（R-Field = R-SDA + R-常规）中饲喂Meta​​zooplankton的现实呼吸率占颗粒饲养剂的1.37倍r-常规，并为食肉动物进行1.25倍r-常规。由颗粒 - 饲养剂和肉食病毒中的SDA伴随SDA的氨排泄（E-SDA）的增加由R-SDA与可能的天然食物的碳 - 氮（C：N质量）比率（6.5为前者4.5为后者）。结果表明，e-SDA为颗粒馈线的0.080倍R-SDA，以及用于肉食病毒的0.116倍的R-SDA。

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  • 来源
    《Marine biology》 |2021年第5期|65.1-65.9|共9页
  • 作者

    Ikeda Tsutomu;

  • 作者单位

    16-3-1001 Toyokawa Cho Hakodate Hokkaido 0400065 Japan;

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