Figure 2

Light pulse-induced alteration of A. gambiae blood-feeding behavior. A. Mosquitoes were exposed to light pulses for 2 min at 120, 90, 60, and 30 min prior to the switch to the light phase and blood provision (ZT 0). Mosquitoes were allowed to feed for 10 min and the percentage of fed mosquitoes in each category was scored and plotted. Among the controls were one set that was not exposed to light (continuous dark) and another set that was exposed to continuous light for these 120 min prior to blood provision. B. Mosquitoes were exposed to light pulses for 5, 15, 30, 60 or 120 sec at 30 min prior to light onset and blood provision (ZT O) for 10 min, after which the percentage of fed mosquitoes were scored and plotted. Error bars indicate the standard error. Significant data points with respect to continuous darkness control set are marked with an asterisk.