中国水产科学2025，Vol.32Issue(6)：849-858,10.DOI:10.12264/JFSC2025-0015
不同障碍物对3种幼鱼游泳能力的影响
The impact of different obstacles on swimming ability of three juvenile fishes
摘要
Abstract
To understand the effects of the complex current environment created by different obstacles on the swimming ability of fish,juvenile black carp(Mylopharyngodon piceus),Chinese barb(Spinibarbus sinensis),and long-finned kissing fish(Rhinogobio ventralis)were used as target species.Critical swimming speeds and changes in induced current speeds were measured by placing round,square,and semi-circular barriers in the swimming flume.The results showed that there was no significant difference(P＞0.05)between the critical swimming speeds of juvenile black carp under no obstacle and semicircular obstacle.The critical swimming speeds were significantly reduced(P＜0.05)under cylindrical and square obstacles,with Uacrit reduced by 36.3％and 15.6％,and Urcrit reduced by 34.9％and 15.3％,respectively.The Urcrit of juvenile Chinese barb was(15.20±0.84)BL/s under square,which was 12.7％(P＜0.05)lower compared to the control group(17.42±0.55)BL/s.The critical swimming speeds of juvenile long-finned kissing fish were significantly lower than those of the group with no obstacle in all the three types of obstacles(P＜0.05).The effect was most pronounced in the group with a round type obstacle Uacrit and Urcrit were(62.83±7.52)cm/s,(8.17±0.73)BL/s.There was no significant difference in the induced flow velocity of juvenile black carp and Chinese barb with no obstacle and different types of obstacles(P＞0.05).The induced flow velocity of juvenile long finned kissing fish was significantly different(P＜0.05)under round and square type of obstacles.The flow-sensing velocity ranges for the three species were as follows:Uaind from 1.60 cm/s to 5.20 cm/s,and Urind from 0.17 BL/s to 0.62 BL/s.In the same obstacle environment,the Urcrit and Urind values of juvenile Chinese barbs were significantly higher than those of juvenile black carp and long-finned kissing fish.The critical swimming speeds of all the three experimental fish species were higher than their flow-sensing velocities.This study found that obstacles and their types significantly affected the critical swimming ability of fish,whereas the impact on flow-sensing velocity was significant only among different species.These results provide a reference for fish habitat and fishway design.关键词
障碍物/青鱼/中华倒刺鲃/长鳍吻鮈/临界游泳速度/感应流速Key words
obstacle/Mylopharyngodon piceus/Spinibarbus sinensis/Rhinogobio ventralis/critical swimming speed/induced flow velocity分类
农业科技引用本文复制引用
曾钰评,俞立雄,林小菊,吴池杰,王敏,段辛斌,朱峰跃,汪登强..不同障碍物对3种幼鱼游泳能力的影响[J].中国水产科学,2025,32(6):849-858,10.基金项目
国家重点研发计划项目(2023YFC3205903) （2023YFC3205903）
国家自然科学基金项目(32202942) （32202942）
中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金项目(2023TD09). （2023TD09）
