Acaricidal action of destruxins produced by a marine-derived Beauveria felina on the bovine tick Rhipicephalus (Boophilus) microplus

► The tick Rhipicephalus (Boophilus) microplus is a major cattle pest. ► The enthomopathogenic fungus Beauveria felina produces destruxins. ► Destruxins were obtained from B. felina growth media. ► Destruxins displayed 30% inhibition of R. (B.) microplus engorged females development. ► Destruxins have potential to be developed as ticks' biological control.