Effects of chronic tetrabromodiphenyl ether stress on growth and antioxidant enzyme activity in fat greenling Hexagrammos otakii
ZHANG Sai－sai1，2， SUN De－qi1， JIANG Xin－tong1， DONG An－ran1， WANG Wei1
1.Key Laboratory of Mariculture＆ Stock Enhancement in North China's Sea，Ministry of Agriculture， Dalian Ocean University，Dalian 116023，China；2.Fisheries Technical Extension Station of Dalian， Dalian 116023， China
Abstract: The growth and activities of related antioxidant enzymes were determined in fat greenling Hexagrammos otakii in plastic tanks of each 70 cm×40 cm×32 cm exposed to tetrabromodiphenyl ether(BDE－47)at concentration of 0 ng/L(blank control group)， 5 ng/L(Group A)， 50 ng/L(Group B)， 500 ng/L(Group C)， 5 μg/L(Group D)and 50 μg/L(Group E)and to dimethyl sulfoxide(DMSO)at a dose of 25 μg/L(DMSO control group)at water temperature of(21±1)℃ for 42 days to investigate the biological toxic effects of BDE－47 on fat greenling.The results showed that there was a dose－dependent relationship between growth of fat greenling and BDE－47 concentration， degrowth in body weight in fat greenling in groups D(－38.66%)and E(－23.41%)， even 100%of survival.Significant inductive effects have been observed in the activities of superoxide dismutase(SOD)and catalase(CAT)in liver of fat greenling(p＜0.05)， the activities of SOD and CAT showing increase first and then decrease in each treatment group.The SOD activities in muscle tissue were shown to be elevated first and then declined in Group C，Group D and Group E，without significant difference in CAT activity in Group B.The findings indicate that high concentration of BDE－47 results in inhibition of growth of fat greenling， specially body weight and activities of SOD and CAT in liver.
2017, Vol. 32 
