title: Comparative larvicidal activity of essential oils from three medicinal plants against Aedes aegypti L.
abstract: This work aimed at comparing larvicidal activity of essential oils extracted from the dried leaves of Alpinia speciosa, Cymbopogon citratus, and Rosmarinus officinalis against Ae. aegypti larvae. The larvae were observed for 4 h and at 24 h according to a completely randomized design with three replications and the following concentrations [μl/ml]: 0.25, 0.5, 1.0, 1.5, 2.0, 2.5, and controls were distilled water, and commercial standard citral, camphor, eucalyptol, α-pinene, and β-myrcene. The essential oil of C. citratus had the lowest LC₅₀ (0.28) and LC₉₀ (0.56) values, followed by that of A. speciosa (0.94 and 1.2, resp.) and of R. officinalis (1.18 and 1.67, resp.), and only the commercial standards citral and α-pinene were larvicidal.
authors.affiliation: Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, 2000 Campos dos Goytacazes, Rio de Janeiro, Brazil. flavia@uenf.br
authors.forename: Flávia P
authors.initials: FP
authors.lastname: Freitas
authors.forename: Silvério P
authors.initials: SP
authors.lastname: Freitas
authors.forename: Gloria C S
authors.initials: GC
authors.lastname: Lemos
authors.forename: Ivo J C
authors.initials: IJ
authors.lastname: Vieira
authors.forename: Geraldo A
authors.initials: GA
authors.lastname: Gravina
authors.forename: Francisco J A
authors.initials: FJ
authors.lastname: Lemos
mesh_terms: D000330:Aedes / Q000254:growth & development; D032429:Alpinia / Q000737:chemistry; D000818:Animals; D031743:Cymbopogon / Q000737:chemistry; D007306:Insecticides / Q000737:chemistry / Q000302:isolation & purification; D007814:Larva / Q000187:drug effects; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D027542:Rosmarinus / Q000737:chemistry
chemical_list: D007306:Insecticides; D009822:Oils, Volatile