Hatching patterns of Locusta migratoria eggs derived from different pods and those from the same pods. As indicated above each triplet, the difference in the mean hatching times of the 2 pods (top and bottom panels) ranged from 3.6 to 80 h (A–D). In the mixed pairs (middle panel), the first and second hatchings are shown in black and light-colored bars. Different lower-case letters indicate significant differences in mean values at the 5% level with Tukey’s multiple test. The diagrams on the right of the figure show combinations of eggs from two pods expressed as white and black eggs, respectively.