Leandro de Oliveira Souza Higa, Marcos Valério Garcia, Jacqueline Cavalcante Barros, Wilson Werner Koller and Renato Andreotti
Rhipicephalus microplus is a monoxenous species whose main hosts are bovines, leading to considerable losses in cattle production worldwide. In addition, this tick is the transmitter of pathogenic agents responsible for the bovine babesiosis and anaplasmosis (BBA) complex. These ectoparasites are still mainly controlled with chemical products. The constant exposure of ticks to acaricides, associated with the lack of adequate application procedures, accelerates the selection pressure of resistant individuals in the population, inevitably increasing resistance, as reported by many authors around the world. This article presents current information about the resistance situation of R. microplus in Brazil. We identify and discuss the main chemical bases being used as a means to guide new research.
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