长江流域资源与环境 >> 2012, Vol. 21 >> Issue (Z2): 70-.

• 自然资源 • 上一篇    下一篇

鳙幼鱼游泳能力和游泳行为的研究与评价

蔡 露|涂志英|袁 喜|刘国勇|刘德富|石小涛|黄应平   

  1. (三峡大学三峡库区生态环境教育部工程研究中心|湖北 宜昌 443002)
  • 出版日期:2012-12-19

SWIMMING CAPABILITY AND SWIMMING BEHAVIOUR OF JUVENILE 〖WTHX〗ARISTICHTHYS NOBILIS

CAI Lu, TU Zhiying, YUAN Xi, LIU Guoyong, LIU Defu, SHI Xiaotao, HUANG Yingping   

  1. (Engineering Research Center of Ecoenvironment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang |443002, China)〖
  • Online:2012-12-19

摘要:

利用自制的鱼类游泳实验装置,采用递增流速法,研究了鳙幼鱼游泳能力和游泳行为。结果表明:鳙标准代谢率SMR实际测定值为18727±545 mgO2/(kg·h),方程拟合值为18281mgO2/(kg·h),实测值与拟合值接近;鳙耗氧率MO2与游泳速度U的拟合方程为MO2=18281+3983 U1.30,耗氧率幂函数方程中U的幂值为130,U的幂值越小游泳效率越高,说明鳙游泳效率较高;鳙临界游泳速度Ucrit为457±056 BL/s,与青鱼近似;鳙疲劳后的耗氧率迅速降低,在疲劳后45~60 min时耗氧率恢复到标准代谢率。鳙EPOC值为10716 mgO2/kg,说明鳙运动疲劳后的恢复能力较高;运动耗能COT与游泳速度相关关系曲线中,在4~6 BL/s时COT较低,说明此时鳙的能量利用效率较高,拟合方程为COT=664 U-1+131 U0.34;通过实验测定,鳙摆尾率TBF和游泳速度相关关系拟合方程为TBF=202+053 U。研究可为鱼道设计提供参考,对鳙保护具有指导意义

Abstract:

The juvenile Aristichthys nobilis swimming capability and swimming behaviour were tested using experiment apparatus by increasing velocity method.The results showed as follows.(1) The actual standard metabolic rate (SMR) was 18727±545 mgO2/(kg·h) which was closed to the estimated SMR (18281 mgO2/(kg·h)).(2) There was high swimming efficiency in Aristichthys nobilis because the power value of swimming speed (U) was 130 which was low level in the oxygen consumption rate (MO2) power equationMO2=18281+3983 U1.30. (3) In the experiment, critical swimming speed (Ucrit) was 457±056 BL/s which was similar to Piceus’ critical swimming speed. (4) The ability for recovery in Aristichthys nobilis was high,because the excess postexercise oxygen cost (EPOC) was 10716 mgO2/kg which was lower than other fishes.The aerobic metabolic rate renewed to the normal level after 45-60 min later,when Aristichthys nobilis was fatigue.(5) In the relation curve between the cost of transport (COT) and swimming speed,the value of COT was low level in 4-6BL/s swimming speed.Therefore,the efficiency of energy was excellent at that condition. And the equation COT was COT=664 U-1+131 U0.34.(6) The equation TBF=202+053 U obtained by the relationship between the tail beat frequency (TBF) and the swimming speed.〖HJ1〗〖HJ〗

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