Histochemical effects of some biological agents on culex pipiens larvae

The histochemical effects of the lethal concentration that kills 50% of larvae [LC[50]] of three biological agents, abamectin, Bacillus thuringiensis and spinosad on the carbohydrates [polysaccharides], proteins, nucleic acids and lipids content of the midgut and fat bodies of Culex pipiens 2[nd] instar larvae were studied. The results showed that the three tested compounds reduced the carbohydrates [polysaccharides], proteins, RNA synthesis and lipids content after 72 hours of treatment where abamectin was the most effective followed by Bacillus thuringiensis then spinosad