[Larvicidal activity of Anacardium humile Saint Hill oil on Aedes aegypti (Linnaeus, 1762) (Diptera, Culicidae)].
The objective of this study was to evaluate the potential of Anacardium humile (monkey nuts) against Aedes aegypti larvae. Hexane, ethanol and aqueous extracts and oil from leaves were obtained from plant material collected from the Brazilian savanna. These were tested at concentrations of 1%, 0.5%, 0.25%, 0.125%, 0.05% and 0.0125%, diluted in 1% dimethyl sulfoxide. The dead larvae were counted 24 hours later. The Probit analysis method was used to obtain the LC(50) and the respective confidence intervals. The conclusion was that only the oil extracted from Anacardium humile leaves caused 100% mortality among fourth-instar Aedes aegypti larvae, using concentrations of up to 0.125%. This seems to indicate that the active ingredients are present in the most apolar phase. This indicates that this plant has potential use as a larvicide against Aedes aegypti. However, new tests should be carried out using other plant organs, as well as using other methods and solvents for the extraction.
Porto
Karla Rejane de Andrade
KR
Curso de Nutrição, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.
Roel
Antonia Railda
AR
Silva
Márcia Marlene da
MM
Coelho
Rosemary Matias
RM
Scheleder
Eloty Justina Dias
EJ
Jeller
Alex Haroldo
AH
D000330:Aedes; D031021:Anacardium / Q000737:chemistry*; D000818:Animals; D007306:Insecticides; D007814:Larva / Q000187:drug effects; D010938:Plant Oils / Q000494:pharmacology*
D007306:Insecticides; D010938:Plant Oils