Acute Toxicity and Behavioral Alterations of Oligochaete Worm, Branchiura sowerbyi Exposed to Diazinon

Abstract

In the present study, acute toxicity of the organophosphate pesticide, diazinon, was evaluated under experimental condition to Oligochaete worm, Branchiura sowerbyi. The 96 h LC₅₀ with 95% confidence limits of B. sowerbyi was 2.87 (2.50–3.17) mg/l. None of the unexposed control worm died during the experiment. Mortality rate between each dose and mortality rate between 24–96 h depending on time was correlated. The mortality rate also varied significantly (p<0.05) with the increasing concentration for the organisms at all the exposure concentrations except 6.00 mg/l, 6.50 mg/l and 7.00 mg/l (p>0.05) at all the exposure times. The relationship between mortality rate and exposure times was found to be significant (p<0.01). The effect of toxicant on the behavioral changes of the Oligochaete worm was directly proportional to the increasing concentration of diazinon.

Keywords: Acute toxicity, diazinon, Branchiura sowerbyi, 96 h LC₅₀, behavior 

Cite this Article

Saha S, Saha NC, Mukherjee D. Acute toxicity and behavioral alterations of Oligochaete worm, Branchiura sowerbyi exposed to Diazinon. Research & Reviews: A Journal of Life Sciences. 2018; 8(2):
1–5p.