Fig. 3From: Larval density mediates knockdown resistance to pyrethroid insecticides in adult Aedes aegyptikdr frequencies as a result of density-dependent selection. Box plots show the distribution of the kdr frequencies of adult mosquitoes emerging from each treatment combination. The dotted line represents the initial frequency of first-instar larvae in the population. *P < 0.01, ***P < 0.0001Back to article page