Additional file 1: Figure S1. Correlation between larval densities (larvae per dip) and total number of predators for Anopheles larvae in (A) drainage ditches, (B) fishponds, (C) man-made ponds, and (D) rice paddies. Figure S2. Correlation between larval densities (larvae per dip) and total number of predators for Culex larvae in (A) drainage ditches, (B) fishponds, (C) man-made ponds, and (D) rice paddies. Table S1. Correlation between different predator types and larval densities/dip in the natural aquatic habitats.