Fig. 1.

Effect of 20-hydroxyecdysone on mortality of Tribolium castaneum larvae. Each point represents the mean ± SE of five replicates. Means in the same column followed by different letters indicate that the difference between controls and treated or starved larvae is statistically significant as determined by the Tukey’s HSD test. Between the letters ‘a’ and ‘b’, the effect is significant (P < 0.05). Between the letters ‘a–c’, the effect is very significant (P < 0.01). Between the letters ‘a–d’, the effect is very highly significant (P < 0.001).