Vol. 8, Issue 6 (2019)

Author(s):
DS Yasodha, KM Umarajan and S Malathy

Abstract:
Acetamiprid is a new generation, highly active neonicotinoid insecticide which has been used to control insect pests and mites in our study the effect of this insecticide on blue green algae namely, Anabaena aequalis Borge and Oscillatoria salina Biswas was been investigated. Cyanobacteria plays an important role in enhancing the soil fertility by fixing the atmospheric nitrogen in addition to this they also help to degrade harmful pollutants from the soil thereby reducing the toxicity from the environment. The insecticide acetamiprid which are applied to eradicate the insect pest have impact on the cyanobacteria. Hence in our study the estimation of chl-a, carotenoids, phycobilins, protein and nitrogen reductase activity showed that the insecticide drastically decreases the above said components at the selected concentration during the first week. All the response were found to be dose dependant and satistically significant. Hence the insectidcide acetamiprid was found to have microbial ecotoxicity effect.