Avaliação da eficiência de deltametrina, amitraz, cipermetrina e associação de diclorvós e cipermetrina sobre fêmeas de Rhipicephalus (Boophilus) Microplus, R. sanguineus, Amblyomma cajennense Sensu Lato S. L. e Dermacentor nitens provenientes da Região de Cruz das Almas - Ba

Abstract

The climatic conditions of Brazil favor the development and prevalence of several species of ticks, among them Rhipicephalus (Boophilus) microplus, R. sanguineus, Amblyomma cajennense sensu lato (s. l,) and Dermacentor nitens, are the most frequent These ectoparasites cause direct and indirect damage to the animals, including anemia due to the lost blood volume in cases where the animals may be with a high parasitic load and also the pathogens that can be inoculated at the moment of the blood repast. The control is basically carried out by the application of chemical products found in the market, however, the excessive use and in an erroneous way has accelerated the process of resistance of the different species of ticks to several active principles in practically all Brazil. Therefore, the objective of this work was to perform in vitro tests by immersion test of the said species in the region of Cruz das Almas-BA to verify the efficiency of Butox®, Amitraz (Amitrazil®), Cypermethrin and Cypermethrin dichlorvos in populations of R. microplus, D. nitens, R. sanguineus and A. cajennense. As results, it was verified that the tested carrapaticides have low efficiency on the populations of ticks collected in the city of Cruz das Almas - Ba. Therefore, it is concluded that the use of these carrapaticidas in the region will not have the desired effect. Except Cypermethrin with Dichlorvos in the use of R. sanguineus in the phase of fed nymphs that presented high efficiency. Noting the importance of assessing a wider range of ticks so that.