摘要
为探究不同流速下鲫鱼的生理响应,以红鲫鱼(Carassius auratus Linnaeus)为研究对象,采用流速渐变环形水槽通过设置5个流速区模拟研究了不同流速条件对鲫鱼体重及酶活等指标的影响。结果表明,鲫鱼的体重及增长率基本随流速增加而减少,而超氧化物歧化酶(SOD)、α-淀粉酶(AMY)活性和活性氧(ROS)含量基本随着水流速度增大先减小后增加。高流速区域(76.3cm/s)鲫鱼ROS、SOD、AMY含量的变化显著(P<0.05),而其它流速区域变化较小,这表明高流速(76.3cm/s)对鲫鱼产生胁迫作用。鲫鱼流速适宜曲线研究发现36~42cm/s是鲫鱼最适宜的生存环境。研究结果可为闸坝建设后生态管理提供理论依据。
In order to explore the physiological response of crucian carp at different flow rates,Carassius auratus Linnaeus was taken as the research object.The influences of different hydrodynamic conditions on the body weight and enzyme activity of Carassius auratus Linnaeus were studied by setting five flow rate zones in the ring-shaped flume with gradient flow rate.The results showed that the weight and growth rate of Carassius auratus Linnaeus decreased with the flow velocity increasing from 16.4 cm/s to 76.3 cm/s.the superoxide dismutase(SOD),enzyme-amylase(AMY),and reactive oxygen(ROS) of Carassius auratus Linnaeus first decreased and then increased with the increase of flow velocity.The SOD,AMY,ROS of Carassius auratus Linnaeus changed significantly(p < 0.05) under high velocity condition(76.3 cm/s),while in other flow velocity areas varied little.These results indicated that the high velocity(76.3 cm/s) have a stress effect on the growth of Carassius auratus Linnaeus.Moreover,the optimum velocity curve suggested that the flow velocity between 36 to 42 cm/s is the most suitable living environment for the Carassius auratus Linnaeus.The results of this study can provide a theoretical basis for ecological management of the sluice dam.
作者
李玉蕴
王沛芳
王超
范秀磊
王洵
LI Yu-yun;WANG Pei-fang;WANG Chao;FAN Xiu-lei;WANG Xun(Key Laboratory of Integrated Regulation&Resources Development on Shallow Lakes,Ministry of education,Hohai university,Nanjing 210098,China;College of Enironment,Hohai University,Nanjing 210098,China)
出处
《四川环境》
2020年第4期1-8,共8页
Sichuan Environment
基金
国家自然科学基金面上项目“水动力驱动的典型鱼类动态响应与闸坝运行调控机制”(51479065)
国家创新研究群体项目“水资源高度开发的河流水、沙及污染物生态效应”(51421006)。
关键词
鲫鱼
流速
生化指标
抗氧化酶
闸坝
Carassius auratus Linnaeus
flow velocity
biochemical index
antioxidase
dam
