IMPACT OF ENVIRONMENTAL ACIDIC PH ON OXIDATIVE ENZYMES OF FRESH WATER FISH, CYPRINUS CARPIO (L)U. SRINEETHA, M. VENKATA REDDY AND M. BHASKARAbstract In the present study the activities of oxidative enzymes like glucose-6-phosphate dehydrogenase (G-6-PDH), lactate dehydrogenase (LDH), glutamate dehydragenase (GDH), succinate dehydrogenase (SDH) and malate dehydrogenase (MDH) in gill and brain of Cyprinus carpio at 7th and 15th days of exposure to sub lethal concentration of acidic media(PH5.0) besides controls, are presented in Table 1 and 2. The activities of G-6-PDH, SDH and MDH decreased at day 7 and 15 in the gill and brain of experimental fish with a corresponding increased in the activities of LDH and GDH of experimental fish over control. But in between the two organs the degree of decrease was greater in gill than the brain of fish. Probably, more suppression of oxidative metabolism occurs in gills than the brain of fish. Interestingly, in the case of GDH activity was high in brain than the gill of fish.
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