The measurement of muscle fatigue in walleye pollock (Theragra chalcogramma) captured by trawl
The measurement of muscle fatigue in walleye pollock (Theragra chalcogramma) captured by trawl
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拖网捕捞的狭鳕（Theragra chalcogramma）肌肉疲劳测量
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Y. Inoue
中科院分区：
文献类型：
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作者：
Gang Xu;T. Arimoto;Y. Inoue
在日本北部北海道附近的渔场，用水母拖网捕获了大眼鳕鱼。为了研究鱼在捕获过程中的肌肉疲劳与其游动能力的关系，在实验室中采集了平均叉长为43 cm的捕获鱼的背部白肌样本，并测定了乳酸和ATP相关物质(AD-P、AMP、IMP)的浓度。捕获后即刻，鱼体内乳酸浓度为52~239 mg·100g~(-1)湿肌，ATP浓度为0.13~1.57 mg·g~(-1)湿肌。其中一些鱼的ATP浓度较高，约为1/1molg-1，乳酸浓度较低，约为50 mg 100g-1，与在500升储罐中恢复24 h后观察到的情况非常相似。在恢复期的2 4h内，三磷酸腺苷浓度没有增加，但腺苷脱氢酶、环磷酸腺苷等与三磷酸腺苷相关的化合物浓度逐渐升高。结果表明，一些大眼鳕鱼可能没有经历完全的肌肉疲劳，可能能够在以4.0至4.6节的速度拖网内游泳更长时间。
Walleye pollock ( Theragra chalcogramma) were captured by otter trawl in the fishing grounds off Hokkaido, northern Japan. In order to investigate the muscle fatigue of a fish in relation to its swimming ability during the capture process, samples of the dorsal white muscle of captured fish with a mean fork length of 43 cm were taken on board and the concentrations of lactic acid and ATP-related compounds (AD P, AMP, IMP) were later determined in the laboratory. Lactic acid concentration ranged from 52 to 239 mg 100 g-1 wet muscle and ATP concentration from 0.13 to 1.57 //mol g _1 wet muscle in the fish immediately after capture. Some of the fish had a higher ATP concentration of about 1 /^mol g~1 with a lower lactic acid concentration of about 50 mg 100 g-1 , very similar to that observed in the fish after 24 h recovery in a 500 litre holding tank. During a recovery period of 24 h, the ATP concentration did not increase, but the concentration of ATP-related compounds such as A D P and AMP increased gradually. The resuits suggest that some of the walleye pollock might not have experienced complete muscle fatigue, and might be able to swim longer inside the net, which was towed at speeds of 4.0 to 4.6 knots.