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Metabolic measurements and parameter estimations for bioenergetics modelling of Pacific Chub Mackerel Scomber japonicus
Fisheries Oceanography ( IF 2.6 ) Pub Date : 2020-01-25 , DOI: 10.1111/fog.12465
Chenying Guo 1 , Shin‐ichi Ito 1 , Nicholas C. Wegner 2 , Laura N. Frank 3 , Emmanis Dorval 3 , Kathryn A. Dickson 4 , Dane H. Klinger 5
Affiliation  

As a crucial step in developing a bioenergetics model for Pacific Chub Mackerel Scomber japonicus (hereafter chub mackerel), parameters related to metabolism, the largest dissipation term in bioenergetics modelling, were estimated. Swimming energetics and metabolic data for nine chub mackerel were collected at 14°C, a low temperature within the typical thermal range of this species, using variable‐speed swim‐tunnel respirometry. These new data were combined with previous speed‐dependent metabolic data at 18 and 24°C and single‐speed (1 fork length per second: FL/s) metabolic data at 15 and 20°C to estimate respiration parameters for model development. Based on the combined data, the optimal swimming speed (the swimming speed with the minimum cost of transport, Uopt) was 42.5 cm/s (1.5–3.0 FL/s or 2.1 ± 0.4 FL/s) and showed no significant dependence on temperature or fish size. The daily mass‐specific oxygen consumption rate (R, g O2 g fish−1 day−1) was expressed as a function of fish mass (W), temperature (T) and swimming speed (U): R = 0.0103W−0.490 e(0.0457T) e(0.0235U). Compared to other small pelagic fishes such as Pacific Herring Clupea harengus pallasii, Pacific Sardine Sardinops sagax and various anchovy species, chub mackerel respiration showed a lower dependence on fish mass, temperature and swimming speed, suggesting a greater swimming ability and lower sensitivity to environmental temperature variation.

中文翻译:

代谢测量和参数估计,为太平洋丘比鲭鱼S的生物能学建模

作为开发太平洋Chu鱼鲭鱼(以下称鲭鱼)生物能学模型的关键步骤,估计了与代谢相关的参数,这是生物能学建模中最大的耗散项。使用变速游泳隧道呼吸测定法,在14°C(该物种典型温度范围内的低温)下,收集了9个鱼的游泳能量和代谢数据。这些新数据与之前在18和24°C下与速度有关代谢数据以及在15和20°C下的单速(1叉每秒的长度:FL / s)代谢数据相结合,以估计用于模型开发的呼吸参数。基于组合数据,获得最佳游泳速度(以最小的运输成本获得的游泳速度,Uopt)为42.5 cm / s(1.5–3.0 FL / s或2.1±0.4 FL / s),对温度或鱼的大小没有显着依赖性。每日质量的比耗氧率([R ,克邻2克鱼-1 天-1)表示为鱼的质量(的函数w ^),温度(Ť)和游泳速度(Û):- [R  = 0.0103 w ^ - 0.490 e (0.0457 T e (0.0235 U。与其他小中上层鱼类相比,例如太平洋鲱鱼Clupea harengus pallasii太平洋沙丁鱼Sardinops sagax和各种凤尾鱼物种,鲐鱼呼吸显示对鱼的质量,温度和游泳速度较低的相关性,这表明更大的游泳能力和较低的灵敏度,以环境温度变化。
更新日期:2020-01-25
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