Figure 1. Differences in adult offspring production over 5 successive copulations by males.

Y axis: number of offspring imagos produced by the n^th copulation. 24 hours refer to the 5^th copulation that occurred 24 hours after the 4^th copulations. Number of offspring imagos significantly dropped along the first four copulations (GLM: F_1,172 = 44.49; p<0.0001) but returned to the initial level after 24 hours (GLM: F_1,90 = 0.43, p = 0.5122). Different letters indicate significant differences (one-tailed post-hoc tests).