Chemical Composition and Larvicidal Activity of Essential Oils Extracted from Brazilian Legal Amazon Plants against Aedes aegypti L. (Diptera: Culicidae)

Table 3

Lethal concentrations for 50% of the test subjects (Aedes aegypti L.; n = 10) (LC₅₀) of the essential oils obtained from plant species endemic to the Brazilian Legal Amazon after 24 h of exposure.

Plant species	(mg/L)
Eugenia piauhiensis Vellaff.	230 (194–306)^b
Myrcia erythroxylon O. Berg	>1000
Psidium myrsinites DC.	292 (212–386)^b
Siparuna camporum (Tul.) A. DC.	251 (207–312)^b
Lippia gracilis Schauer	282 (259–306)^b

LC₅₀ was calculated by probit analysis using SPSS software version 13.0.
^bConfidence interval of 95%; no dead larvae were observed in the negative control, composed of 0.01% DMSO solution; the positive control, 1 mg/L temefos, exhibited 100% larval mortality.