Abstract：Ammonia-N and nitrite-N are the main pollutants in the shrimp culture environment. After Macrobrachi-
um rosenbergii were exposed to 1mg /L non-ionic ammonia-N and 1mg /L nitrite-N for 1, 4, 7, and 10 days, phenol-
oxidase(PO) activity in hemolymph and muscle decreased significantly , but the phenoloxidase activity in hepatopan-
creas increased appreciably. Superoxide dismutase (SOD) activity increased at first and decreased after 10 days. Al-
kaline phosphatase(ALP) and acid phosphatase (ACP) activities increased significantly. It was shown that the four
immune Enzyme activities of M. rosenbergii were affected significantly by exposure to 1mg /L non-ionic ammonia-N
王玥, 胡义波, 姜乃澄. 氨态氮、亚硝态氮对罗氏沼虾免疫相关酶类的影响[J]. 浙江大学学报（理学版）, 2005, 32(6): 698-705.
WANG Yue, HU Yi-Bo, JIANG Nai-Cheng. Effects of ammonia-N and nitrite-N on immune enzymes of Macrobrachium rosenbergii. Journal of ZheJIang University(Science Edition), 2005, 32(6): 698-705.