Acaricidal activity of Lippia gracilis essential oil and its major constituents on the tick Rhipicephalus (Boophilus) microplus.

Autor: Cruz EM; Agronomy Department, Federal University of Sergipe, Av. Marechal Rondon S/N, CEP 49100-000, São Cristóvão, SE, Brazil., Costa LM Jr, Pinto JA, Santos Dde A, de Araujo SA, Arrigoni-Blank Mde F, Bacci L, Alves PB, Cavalcanti SC, Blank AF
Jazyk: angličtina
Zdroj: Veterinary parasitology [Vet Parasitol] 2013 Jul 01; Vol. 195 (1-2), pp. 198-202. Date of Electronic Publication: 2013 Jan 04.
DOI: 10.1016/j.vetpar.2012.12.046
Abstrakt: The present study aimed to evaluate the activity of Lippia gracilis Schauer essential oil obtained from different L. gracilis genotypes and their major components, carvacrol and thymol against Rhipicephalus (Boophilus) microplus (cattle tick) larvae and engorged females. The larval test was performed parallel to the adult immersion test for engorged females for four L. gracilis genotypes. Similar tests were further performed for their major compounds carvacrol and thymol. Carvacrol (LC50 of 0.22 and 4.46 mg/mL, to larvae and engorged females, respectively) was more efficient than thymol (LC50 of 3.86 and 5.50 mg/mL, to larvae and engorged females, respectively). The lethal concentrations obtained for the isolated essential oil from genotypes LGRA-201 against larvae (1.31 mg/mL) and LGRA-106 against engorged females (4.66 mg/mL) confirmed the acaricidal activity of L. gracilis essential oil and its effectiveness in controlling the southern cattle tick.
(Copyright © 2013 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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