Figure 3. Effect of fungus on permethrin sensitivity.

Mean (± SEM) percentage permethrin-induced mortality of uninfected (white), Beauveria-infected (grey) and Metarhizium-infected (black) mosquitoes from the laboratory colony (top) and field An. gambiae s.s population (bottom). Data show mortality rates measured 24 hrs after permethrin exposure on day 0 (left) and day 3 (right), from ten laboratory and eight field replicates of 28 females per group. Mortality rates of fungus-infected groups exposed to permethrin on day 3 (*) were corrected for mortality of corresponding fungus-infected groups exposed to control papers. Significant differences are indicated by non-corresponding letters.