Determination of LC50 of permethrin acaricide in semi-engorged females of the tick Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae)

Autor(es)

Roma, Gislaine Cristina ^[1] ; de Oliveira, Patricia Rosa ^[1] ; Pizano, Marcos Aparecido ^[2] ; Camargo Mathias, Maria Izabel ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Dept Biol, Inst Biociencias, BR-13506900 Rio Claro, SP - Brazil

^[2] Univ Estadual Paulista, UNESP, Dept Ecol, Inst Biociencias, BR-13506900 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Experimental Parasitology; v. 123, n. 3, p. 269-272, NOV 2009.
• Citações Web of Science: 36

Resumo

Currently, the most efficient and widely used method of tick control still is the treatment with acaricides, especially permethrin (active ingredient of the Advantage (R) Max3, Bayer), a pyrethroid with neurotoxic action. Due to the wide use of this acaricide in the control of the tick Rhipicephalus sanguineus, this study carried out laboratorial procedures to determine the LC(50) (lethal concentration fifty) of permethrin in semi-engorged females of R. sanguineus. Based on the result of 14 dilutions of permethrin in distilled water and later Probit analysis, the LC(50) of permethrin for R. sanguineus was 2062 ppm (1549-2675 ppm). This work can be used as a protocol with other chemicals, to determinate the LC(50), basic procedure for studies of control, resistance and behavior of ticks treated with acaricides, especially the brown dog tick R. sanguineus. Also, the knowledge of the LC(50) provides information on the potency of chemicals, the sensitivity of Arthropods to them and even estimates on pest control. (C) 2009 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 07/57809-5 - Estudo morfológico dos ovários de carrapatos Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) e do sangue periférico de camundongos, ambos submetidos ao piretróide permetrina (ingrediente ativo do Advantage Max3, Bayer)
• Beneficiário: Gislaine Cristina Roma
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 07/59020-0 - Estudo da morfo-histologia externa e interna (sistemas: salivar, produtivo e digestório) de três espécies de carrapatos de importância médica veterinária (Acari - Ixodidae)
• Beneficiário: Maria Izabel Souza Camargo
• Modalidade de apoio: Auxílio à Pesquisa - Regular