雅鲁藏布江流域不同裂腹鱼幼鱼游泳能力研究
RESEARCH ON THE SWIMMING PERFORMANCE OF JUVENILE SCHIZOTHORAX FISH IN THE YARLUNG ZANGBO RIVER BASIN
摘要
Abstract
The design of fish passage facilities in hydropower projects primarily relies on the swimming ability parame-ters of target fish species.This study investigated interspecific differences in the individual swimming capacities of juvenile fish from five Schizothorax species in the Yarlung Zangbo River basin,aiming to provide a scientific basis for fishway design and ecological conservation.The subjects comprised juveniles of five species:Schizothorax oconnori,S.macropogon,S.waltoni,Schizopygopsis younghusbandi,and Oxygymnocypris stewartii.The mean body lengths of experimental fish were(9.2±0.8),(3.1±0.1),(8.3±0.8),(5.8±0.9),and(5.4±0.6)cm,respectively.Using an incremental velocity test,the induced flow velocity(Uind),critical swimming speed(Ucrit),and burst swimming speed(Uburst)of the five species were measured.Results revealed that the mean Uaind varied between 2.3 and 6.7 cm/s,while the mean Urind varied between 0.4 and 0.8 BL/s.The mean Uacrit varied between 31.1 and 60.8 cm/s,and the mean Urcrit ranged from 6.3 to 10.4 BL/s.The mean Uaburst varied between 39.7 and 88.1 cm/s,with the mean relative Urburst varied between 9.7 and 14.6 BL/s.One-way ANOVA and bivariate correlation analysis(body length & swimming capacity metrics)demonstrated significant differences were observed in the swimming performance among the five studied Schizotho-racinae fish species at juvenile stages.Schizothorax oconnori and Schizothorax waltoni exhibited higher response flow velocities,whereas Oxygymnocypris stewartii and Schizopygopsis younghusbandi demonstrated advantages in burst swimming speed.This difference is primarily reflected in their adaptation strategies to torrential and slow-flow habitats.Within the body length range studied,body size was found to influence certain performance metrics.The results provide crucial data support for understanding the swimming capabilities of Schizothoracine fish and for the design effective fishways in the Yarlung Zangbo River basin,revealing interspecific differences in individual swimming performance and offering to scientifically informed ecological conservation.关键词
雅鲁藏布江/裂腹鱼/游泳能力/过鱼设施Key words
Yarlung Zangbo River/Schizothorax spp./Swimming capacity/Fish passage facilities分类
农业科技引用本文复制引用
陈俊,俞立雄,王敏,黄翠,刘明典,朱峰跃,段辛斌..雅鲁藏布江流域不同裂腹鱼幼鱼游泳能力研究[J].水生生物学报,2026,50(3):20-28,9.基金项目
国家重点研发计划课题"长江上游物理生境变化对鱼类影响机理与综合适宜性评价"(2023YFC3205903) （2023YFC3205903）
中华人民共和国农业农村部财政专项(西南地区重点水域渔业资源与环境调查) （西南地区重点水域渔业资源与环境调查）
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(2023TD09)资助[Supported by the National Key R & D Program of China"Impact Mechanisms of Physical Habitat Changes on Fish in the Upper Yangtze River and Integrated Habitat Suitability Assessment"(2023YFC3205903) （2023TD09）
Finance Special Fund of Chinese Ministry of Agriculture and Rural Affairs of the People's Republic of China(Fisheries Resources and Environ-ment Survey in the Key Water Areas of Southwest China) （Fisheries Resources and Environ-ment Survey in the Key Water Areas of Southwest China）
Central Public-interest Scientific Institution Basal Research Fund,CAFS(2023TD09)] （2023TD09）
