Mortality of partially engorged Rhipicephalus microplus female ticks with a commercial product of Beauveria bassiana and Metarhizium anisopliae

In the present work, we evaluated the effect of a product formulated from the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae on the mortality of partially engorged females of Rhipicephalus microplus ticks. Four concentrations (25%, 50%, 75%, and 100%) of the product were prepared diluted in distilled water, and immersion tests will be carried out on the specimens. Tick mortality of 80%, 60% and 50%, respectively, was observed at 96-, 120- and 144 hours post-exposure. It is necessary to carry out additional studies with fully engorged and to evaluate their effect as well as their ovicidal and larvicidal capacity.