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Table 1 Mortality in An. sundaicus (s.l.) exposed to three insecticides

From: Susceptibility to common insecticides and detoxifying enzyme activities in Anopheles sundaicus (sensu lato) after cessation of indoor residual spraying of insecticides in the Jaffna Peninsula and its surroundings in northern Sri Lanka

Insecticide Mean % mortality ± SD (no. of mosquitoes tested) t-value P-value
Kilinochchi Jaffna   
Deltamethrin (0.05%) S100 (110) V97.3 ± 3.8 (100) t(8)=-3.0 0.09
Malathion (5%) S100 (136) V96. 4 ± 0.7 (105) t(10)= -2.0 0.18
DDT (4%) R30.9 ± 8.7 (151) V91.2 ±0.3 (100) t(8)= 31.3 0.01
  1. Abbreviations: S susceptible (≥ 98% mortality), R confirmed resistance (< 90% mortality), V possible resistance and verification needed (90–97% mortality) [22], SD standard deviation