Studies on acute toxicity and behavioral responses of Heteropneustes fossilis (Linn.) exposed to Diazinon

Abstract

In the present study, acute toxicity of the organophosphate pesticide, diazinon, was evaluated under experimental condition to adult Heteropneustes fossilis. The 96 h LC₅₀ with 95% confidence limits of Heteropneustes fossilis is 16.56 (14.32- 18.04) mg/l. None of the unexposed control fish died during the experiment. Mortality rate between each dose and mortality rate between 24-96 h depending on time was correlated. In the fish, significant relationship (p<0.05) was recorded between mortality rate and exposure times (24, 48, 72 and 96 h) at all concentrations of diazinon. Significant variation was observed between mortality rate of fish at all the exposure concentrations at all the exposure times (p<0.01). Effects of the toxicant on the behavioral changes of the fish were directly proportional to the increasing concentration of diazinon.

Keywords: Acute toxicity, Diazinon, Heteropneustes fossilis, 96 h LC₅₀, behavior.

Cite this Article

Saha S, Mukherjee D, Saha NC. Studies on acute toxicity and behavioral responses of Heteropneustes fossilis (Linn.) exposed to Diazinon. Research & Reviews: A Journal of Toxicology. 2018; 8(1): 9–13p.