E. G. Arashkevich, A. V. Drits, A. F. Pasternak, S. E. Frenkel, V. A. Karmanov
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Abstract
The dependence of the respiration rate (R) on an animal’s weight (W) is described by the equation R = aWb, where the exponential coefficient b is usually taken equal to 3/4. However, several authors have indicated that the value of coefficient b may vary with temperature changes, as well as during ontogeny. In Arctic seas, copepods spend most of their lives at temperatures below or close to zero. Meanwhile, there are very few respiration rate measurements at temperature ≤ 0°C, which does not allow us to estimate the value of coefficient b at subzero temperature. The study was carried out on three cruises of the R/V Akademik Mstislav Keldysh in the Siberian Arctic seas in 2018–2020. Copepods caught from the sea were adapted to the experimental temperature and placed in tightly capped vials filled with filtered seawater for 24 h. The oxygen concentration was measured with a fiber-optic oxygen probe. The results of 120 respiration rate measurements and 111 body carbon measurements in five species of copepods at a temperature of –1.5°C are presented. The obtained relationship between body carbon content (W) and prosome length (L) is described by the equation W = 6.982L3.221, and the dependence of respiration on body weight is described by the equation R = 0.077W0.753. No effect of subzero temperature on coefficient b was revealed. The parameters of regression R(W) did not change with the ontogenetic development of Calanus glacialis.
摘要呼吸速率（R）与动物体重（W）的关系用公式 R = aW b 来描述，其中指数系数 b 通常等于 3/4。不过，一些学者指出，系数 b 的值可能会随着温度变化和本体发育而变化。在北极海域，桡足类大部分时间都生活在零度以下或接近零度的环境中。同时，温度≤0°C时的呼吸速率测量数据很少，因此无法估算零下温度时的系数b值。这项研究是在 2018-2020 年 Akademik Mstislav Keldysh 号考察船在西伯利亚北极海域的三次航行中进行的。从海中捕获的桡足类适应了实验温度，并被放置在装满过滤海水的密闭小瓶中 24 小时，用光纤氧气探头测量氧气浓度。本文介绍了在 -1.5°C 温度下对五种桡足类进行的 120 次呼吸速率测量和 111 次体碳测量的结果。体碳含量（W）与前体长度（L）之间的关系用公式 W = 6.982L3.221 描述，呼吸作用与体重的关系用公式 R = 0.077W 0.753 描述。零下温度对系数 b 没有影响。回归参数 R（W）没有随冰川鲣的个体发育而变化。
期刊介绍：
Oceanology, founded in 1961, is the leading journal in all areas of the marine sciences. It publishes original papers in all fields of theoretical and experimental research in physical, chemical, biological, geological, and technical oceanology. The journal also offers reviews and information about conferences, symposia, cruises, and other events of interest to the oceanographic community.
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