【摘要】 通过测定不同氨氮条件下的九孔鲍内脏囊中的过氧化氢酶（ＣＡＴ）和超氧化物歧化酶（ＳＯＤ）活力，观察氨氮对九孔鲍ＣＡＴ和ＳＯＤ酶活力的影响。实验结果表明：不同氨氮浓度下的这两种酶活力不同，ＣＡＴ活力随氢氮浓度的升降而变化，当氨氮浓度为３～４ｍｇ／Ｌ时，其活力高于对照组，当浓度增大至５～６ｍｇ／Ｌ时，ＣＡＴ活力低于对照组；在氨氮为１～４ｍｇ／Ｌ时，ＳＯＤ活力随氨氮浓度增大而上升，在４ｍｇ／Ｌ时达到最大，而当氨氮增至５～６ｍｇ／Ｌ时，ＳＯＤ活力下降。不同温度下的氨氮浓度对九孔鲍的ＣＡＴ和ＳＯＤ酶活力变化也有一定的影响。更多还原

【Abstract】 The activities of CAT and SOD and the effects of the activities of CAT and SOD under the different conditions of NH3-N in internal sac of Haliotis diversicolor supertexta were investigated. The results showed that the activities of CAT and SOD were different in the varying concentrations of NH3-N,and the activities of CAT declined with the increasing of the concentrations of NH3-N. When the concentrations of NH3-N was 1-4 mg/L, the activity of CAT was higher than that of the control group, and when 5-6 mg/L, the activity of CAT was lower than that of the control group, on the other hand, when the concentrations of NH3-N was 1-4 mg/L, the activities of SOD increased with the increasing of the concentrations of NH3-N, and when 4mg/L, the activities of SOD were maximum, and when 5 - 6mg/L, the activities of SOD declined. The activities of CAT and SOD of abalone also were affected by the concentrations of NH3-N at the different temperatures.更多还原