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Table 1 Larval mortality and emergence inhibition of An. gambiae s.s. after exposure to neem oil and corn oil formulations.

From: Larvicidal effects of a neem (Azadirachta indica) oil formulation on the malaria vector Anopheles gambiae

  Larval mortality † Emergence inhibition
  192 ‡ 72   
Oil LC50 LC90 LC50 LC90 EI50 EI90
Neem 10.7 (7.55–12.15) 24.12 (12.37–37.68) 22.11 (17.14–31.42) 109.34 (65.48–256.20) 6.44 (5.01–7.99) 17.38 (14.62–21.91)
Corn 50.6 (37.96–88.69) 86.85 (62.29–133.67) 58.24 (42.24–121.66) 91.79 (63.54–208.38) 47.28 (14.40–91.27) 79.75 (16.65–135.36)
  1. † All concentrations in parts per million (ppm) with 95% confidence intervals between brackets; ‡ Hours after exposure. Six concentrations were tested and replicated with 50 mosquitoes six times each (n = 300). LC and EI values were determined by probit analysis (Finney 1971). Mortality was corrected using Abbott's formula (Abbott 1925) with values obtained from the negative control.