State Key Laboratory of Mariculture Breeding, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China.
Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China.
Mar Biotechnol (NY). 2024 Apr;26(2):380-388. doi: 10.1007/s10126-024-10303-1. Epub 2024 Mar 14.
Swimming is critical for fish survival, and little attention has been paid to the swimming performance of large yellow croaker, the largest farmed marine fish in China. To address this gap, we conducted a study to measure the critical swimming speed (U) of 1050 croaker in a designed swim test flume. Our findings shed light on the effects of group size, U test protocol, and recovery time on swimming performance. The water flow in the swim flume increased steadily and linearly. The linear fit equation was y = 2.89x + 1.79 with an R of 0.99. With the help of the swim flume, we found that group size, and the U test protocol had a significant effect on the U values, except for the recovery time: The U values obtained in the ramp-U test averaged 28.32 ± 6.11 cm.s, which was significantly lower than that obtained in the traditional U test of 32.75 ± 7.60 cm.s; The U value of a group size of 50 fish was 33.51 ± 5.96 cm.s, which was significantly higher than that of a group of 200 fish (28.49 ± 6.37 cm.s). These results provide insights into the swimming performance of large yellow croaker and can be used to standardize the swimming test protocols.
游泳对鱼类的生存至关重要，但人们对大黄鱼（中国最大的养殖海水鱼）的游泳性能关注甚少。为了填补这一空白，我们进行了一项研究，在设计的游泳测试水槽中测量了 1050 条大黄鱼的临界游泳速度（U）。我们的研究结果揭示了群体大小、U 测试方案和恢复时间对游泳性能的影响。水槽中的水流平稳且呈线性增加。线性拟合方程为 y=2.89x+1.79，R 值为 0.99。借助游泳水槽，我们发现群体大小和 U 测试方案对 U 值有显著影响，但恢复时间除外：斜坡-U 测试中获得的 U 值平均为 28.32±6.11 cm/s，显著低于传统 U 测试中获得的 32.75±7.60 cm/s；50 条鱼一组的 U 值为 33.51±5.96 cm/s，显著高于 200 条鱼一组的 U 值（28.49±6.37 cm/s）。这些结果深入了解了大黄鱼的游泳性能，并可用于标准化游泳测试方案。
