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研究水中Ｃｕ２＋、Ｚｎ２＋对真鲷幼鱼组织ＣＡＴ、ＧＰＴ、胃蛋白酶活性的影响．结果表明：真鲷幼鱼暴露于不同浓度Ｃｕ２＋（０．５、０．７５、１．５ｍｇ／Ｌ）、Ｚｎ２＋（１、２、４ｍｇ／Ｌ）海水中４ｄ后，Ｃｕ２＋、Ｚｎ２＋对鳃、肝脏ＣＡＴ，胃蛋白酶都有抑制作用．当Ｃｕ２＋浓度最大时，对鳃、肝脏ＣＡＴ，胃蛋白酶抑制率分别为７３％、３４％和４２．８％；当Ｚｎ２＋浓度最大时，对３种酶活性的抑制率分别为３０％、６８．５％和３２．８％．Ｃｕ２＋、Ｚｎ２＋尤其可使真鲷肝脏ＧＰＴ活性显著降低，当Ｃｕ２＋、Ｚｎ２＋浓度最大时，肝脏ＧＰＴ活性分别是对照组的２４％和３３％．Ｃｕ２＋、Ｚｎ２＋对真鲷幼鱼组织中３种酶活性的抑制作用均有剂量－效应关系
To investigate the effects of Cu2 + and Zn2 + in water on CAT, GPT and pepsin activities in juvenile red sea bream. The results showed that the activities of Cu2 + and Zn2 + on the gill and liver of sea cucumber after exposure to Cu2 + (0.5,0.75,1.5mg / L) and Zn2 + (1,2,4mg / L) CAT, pepsin have inhibitory effect. When the concentration of Cu2 + was the largest, the inhibition rates of CAT and pepsin in gill and liver were 73%, 34% and 42.8%, respectively. When the concentration of Zn2 + was the largest, the inhibitory rates of the three enzymes were 30% and 68%, respectively. 5% and 32.8%. In particular, Cu2 + and Zn2 + could significantly reduce GPT activity in the liver of the red sea bream. When the concentrations of Cu2 + and Zn2 + were the largest, the hepatic GPT activity was 24% and 33% of the control group, respectively. Cu2 +, Zn2 + inhibited the activity of the three enzymes in juvenile red sea fish with dose-effect relationship