Figure 1. Effect of high temperature stress on antioxidant enzyme activity in 2^nd instar larvae of F. occidentalis.

(A) SOD, superoxide dismutase; (B) POD, peroxidase; (C) GST, glutathione-S-transferase. Larvae were exposed to 31, 33, 35, 37, 39, and 41 °C for 1 h in glass tubes; 26 °C was used as the control. Each value represents the mean (±SE) of four replications. Columns labeled with different letters indicate significance at P < 0.05 using ANOVA (Ducan’s test).