Influence of total dissolved gas-supersaturated water on silver carp(Hypophthalmichthys molitrix)

作     者：Lu Cao Rui-feng Liang You-cai Tuo Yong Li Ke-feng Li 

作者机构：State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan University 

出 版 物：《Water Science and Engineering》 (水科学与水工程（英文版）)

年 卷 期：2016年第9卷第4期

页      面：324-328页

核心收录：

学科分类：0908[农学-水产] 09[农学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51379136) 

主　　题：Total dissolved gas supersaturation Silver carp CAT activity Gas bubble disease Median lethal time Median lethal concentration 

摘      要：Dam discharges over spillways are the main reason for the gas-supersaturated water generated in *** aquatic organisms,especially fish,readily develop gas bubble disease(GBD) in a river with total dissolved gas supersaturation(TDGS).Sometimes,fish will die after a specific exposure period,which negatively affects the biological *** this study,the influence of TDGS on silver carp was *** carp were exposed to gas-supersaturated water with TDGS levels of 140%,135%,130%,125%,120%,and 110%to test the impact of *** silver carp died when the TDGS level was 120%or higher,and all the silver carp exposed to a TDGS level of 140%died within10 *** comparison with the Chinese sucker,Prenant s schizothoracin,and rock carp,silver carp seem less sensitive to *** addition,we tested the catalase(CAT) activity in the muscles and gills of silver carp after they were exposed to gas-supersaturated water with a TDGS level of140%.The CAT activity changed with time;it increased first and then decreased until it was lower than the initial CAT *** results of this study can provide basic data for developing a standard for environmental evaluation.