Research Article

Larvicidal Activities and Synergistic Effects of Essential Oils against Anopheles funestus and Culex quinquefasciatus (Diptera: Culicidae) from Kisumu, Kenya

Table 3

The 50% and 90% lethal concentrations (LC50 and LC90, respectively), their 95% confidence intervals, and regression parameters of the larvicidal activity of essential oils against Anopheles funestus 24 h post treatment.

PlantsLC50 (ppm)LLC-ULCLC90 (ppm)LLC-ULCChi2(Wald)-value

LM67.58(61.55–78.86)109.07(100.43–120.30)140.52
LCh105.74(91.38–122.97)175.235(152.21–213.83)45.75
LCa49.21(39.38–57.82)91.26(82.22–102.19)108.01
CS120.50(108.22–144.19)172.00(147.23–226.10)25.99

LC: lethal concentration; LCL: lower confidence limit; UCL: upper confidence limit; ppm: parts per million; LM: Lippia multiflora; LCh: Lippia chevalieri; LCa: Lantana camara; CS: Cymbopogon schoenanthus.