Fig. 2.

Initial behavioral responses of Bombyx mori and Helicoverpa armigera larvae to diet supplemented with antifeedant. a, b Percentages of B. mori larvae that only tasted the diet (no shading) or ate (black shading) on first encounter with food treated with salicin (a) or caffeine (b) (N = 10–15). c, d Percentages of H. armigera larvae that only tasted the diet (no shading) or ate (black shading) on first encounter with food treated with salicin (c) or caffeine (d) (N = 10–15)