Figure 1

Locomotor activity patterns of Locusta migratoria nymphs (gregarious phase, Iheya strain) kept with barley leaves (cv. Betzes), wheat leaves (cv. Chinese Spring) or wet filter paper.
One-day-old hatchlings were individually introduced to actograph. Different letters indicate significant differences between treatments at each time (ANOVA followed by Tukey's HSD test; p < 0.05). Bars indicate SE.