Avaliação do efeito carrapaticida de alguns piretróides sintéticos sobre o carrapato Amblyomma cajennense (Fabricius, 1787) (Acarina: Ixodidae)

Abstract

Using "in vitro" and "in vivo" test it was verified the effect of four kinds of piretroids on all phases of Amblyomma cajennense. The methodology used to "in vitro" test was the imersion of the ticks in acaricyds solutions. The results were evaluated by regression analysis. The methodology used to "in vivo" test was treatments using aspersion of acaricyds an intervals of two weeks, and the number of adults ticks were count in each host. By "in vitro" test were observed that feeding larvae, nimph and adults ticks were less susceptibility to acaricyds than the non feeding ticks. The Deltamethrin the Flumethrin and Alphamethrin were efficient by the concentration of 50ppm, 40ppm and 100ppm, respectively. These concentration were bigger than the concentration used to control of Boophilus microplus. A week is the interval recomended to treatments. The Fenvalerate wasn't efficient in all tests