author(s)
Shaymaa Hussein Mahmoud

abstract
The biochemical effects of entomopathogenic fungi, Beauveria bassiana were studied in larvae of Culex pipiens in laboratory. Results revealed that the mean total glucose, protein and lipid contents decreased after treatment of second instar larvae with LC₂₅, LC₅₀ and LC₉₀ compared with control larvae 96 h post treatment. The decreasing effect was dose dependent. A noticeable decrease in the activity of acetylcholine esterase, alpha esterase and beta esterase compared with control was recorded. Additionally, the activity of Glutathione- S-transferase was reduced after treatment with LC₂₅, LC₅₀ and LC₉₀ of B. bassiana. Similarly, data showed that B. bassiana treated larvae induced a significant decrease of peroxidase activity and ascorbic acid compared to that of control larvae.