The hatching times for Locusta migratoria eggs incubated in different mass sizes. In each pair of comparisons, the mean time of hatching for the eggs in the larger mass was designated as 0 h (A–D). The numbers in parentheses indicate the number of hatched eggs. Bars indicate one SD. Asterisks indicate a significant difference between the two treatments (p < 0.05; t-test). Differences in hatching time in different masses are shown in (E) by designating the mean hatching time for singly kept eggs as 0 h. Horizontal bars indicate one SD.