Susceptibility of three tick hyalomma spp from north Sinai governorate to certain pesticide groups

Three species of Hyalomma tick, [H. anatolicum, H, dromedarii and H. impeltatum] were collected from camels in North Sinai .The susceptibility of adult females and males of each species to four different groups of insecticides [BHC, Fenitrothion, Permethrin and Baygon] were determined. The results of Lc50 values showed that BHC was the most effective compound against adult males and female of H. impeltatum, whereas the superior efficiency against H. anatolicum and H. dromedarii occurred by Baygon and Permethrin respectively on both males and females. Also the results indicated that the adult males of all tested species of ticks were more susceptible to all the tested insecticides than the adult females