Ecdysteroid levels changed by permethrin action in female Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) ticks

► Changes in ecdysteroids titer in tick females exposed to permethrin is proposed. ► Ecdysteroids titer decreased significantly as the permethrin concentration increased. ► Permethrin interferes in the reproductive process of ticks. ► Permethrin is a potent chemical agent impairing the reproduction process.