Vol. 7, Issue 12 (2018)

Author(s):
Haribabu Gogula, Lalitha V and Venkata Rathnamma V

Abstract:
Insecticides are used extensively in agriculture, but their levels in superficial waters generally range far below lethal concentrations for aquatic organisms. However, sub lethal adverse effects might result from exposure of aquatic organisms to insecticides at environmentally relevant concentrations. Acetyl cholinesterase activity is routinely used as a biomarker of the exposure to certain groups of pesticides, such as organophosphates. The fish Ctenopharyngodon idella was exposed to lethal (1/5^{th of} LC₅₀ of 96hrs = 24µgL^-1) and sub lethal ((1/10^{th of} LC₅₀ of 96hrs = 12µgL^-1) concentrations of Profex (profenofos 50%EC) for 4 days. The gill, liver, kidney, brain and muscle tissues were analysed for the activities of Acetylcholinesterase and Acid Phosphatase and all the experiments were compared with controls.