Avaliação da eficácia do amitraz, deltametrina e associação de cipermetrina e clorpirifós sobre fêmeas de Rhipicephalus sanguineus (latreille, 1806) (acari, ixodidae) provenientes de região urbana de Uruguaiana-RS

Abstract

Ticks are ectoparasites of great medical and veterinary relevance, because in addition to spoliation through hematophagy, they act as a vector for several diseases, including zoonoses, being considered an agent of interest in public health in several countries. The objective of this work was to evaluate the efficacy of some commercially available active contact ticks on samples of Rhipicephalus sanguineus (brown tick) teleogenes from an urban region of Uruguaiana-RS, close to the Family Health Strategy 17 (ESF 17), located in the Nova Esperança neighborhood. 140 R. sanguineus teleogens were collected from naturally infected dogs, in households spread over the FHS 17 region. An adult tick immersion test (TIA) was performed with the following active ingredients, amitraz 12.5% (Triatox®), deltamethrin 2.5% in two different presentations (Butox P CE 25® and K-Othrine®) and the association of cypermethrin 15%, chlorpyrifos 25% and citronellal 1% (Colosso®). Among the products tested, only Butox® was not 100% effective, with 90.19%. These results are indicative of the existence of tick resistance in strains of R. sanguineus, from this urban region of Uruguaiana-RS to the product Butox®.