Fig. 6

Effects of repeated, year on year, window of insecticide control. In contrast to Fig. 5, the window of insecticide control is repeated year on year. It is assumed that within the window the control efficiency is 0.2, and 0 elsewhere. The length of the window is fixed to 50 days and the starting day of the window varies, plotting the difference in observed total adult abundances to the uncontrolled equivalent (a). Areas in white show no differences in abundance; red show greater abundance; blue show less abundance, compared to the uncontrolled population. In b, the mean differences over the year for varying starting times are plotted. The control strategy is run for one year only