Effect of profenofos on Na + - K + , Mg 2+ and Ca 2+ ATPaseof Indian carp Labeo rohita (Hamilton)

摘要

Groups of 10 fish in 15L test water wereexposed to lethal and sub lethal concentrations of profenofos for 24, 48, 72, 96h and 1, 4, 8 and16 days. Experiments were conducted in triplicates for each concentration of pesticide. Na+- K+,Mg2+ and Ca2+ ATPase activities were determined in gill, liver, kidney and muscle of fish.Results showed a decline in Mg 2+, Na + - K + and Ca 2+ ATPases in gill, muscle, kidney and liver in allexposed fish compared with non-treated controls. With lethal concentrations the decline in Na +- K + and Ca 2+ and Na + - K + , Mg 2+ and Ca 2+ ATPases suggested severe disruption of cellular ionicregulation.