Figure 4From: Environmental temperatures significantly change the impact of insecticides measured using WHOPES protocolsEffect of exposure temperature on susceptibility to malathion. Panels depict survival of female An. stephensi A) one hour and B) 24Â hours after exposure to 0 or 5% malathion at different temperatures. The dashed line at 0.02 indicates the level of survival above which populations are classified as resistant by the WHO [6].Back to article page