Psyche: A Journal of Entomology

Research Article

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

Table 8

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


Plants	LC₅₀ (ppm)	LLC-ULC	LC₉₀ (ppm)	LLC-ULC	Chi² (Wald)	-value

LM + LCa	24.96	(22.01–27.80)	37.93	(34.59–42.34)	88.76
LM + CS	24.12	(21.27–26.78)	43.42	(39.07–50.26)	0.00
LM + LCh	20.61	(08.61–28.03)	46.16	(40.33–52.53)	42.23
LCh + CS	12.08	(5.68–17.76)	36.50	30.62–43.47	108.11
LCh + LCa	33.16	(26.51–38.83)	60.31	(54.79–66.64)	120.57
CS + LCa	31.99	(28.52–35.32)	48.93	(45.15–53.54)	137.38

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.