Evaluación del control biológico de peri planeta americana (blattidae, linnaeus) por ingestión del hongo metarhizium anisopliae (clavicipitaceae, metchnikoff) y ácido bórico

Abstract

In rural areas it is common to use insecticides or pesticides to control insect infestation affecting public health. One of the most difficult pests to control cockroaches is multiple capabilities for their adaptation and resistance to control methods. However, the use of these insecticides are not beneficial to the environment in which they are applied, or health of the person who handled, is why the use of the entomopathogenic fungus Metarhizium anisopliae was evaluated as an alternative for the biological control of Periplaneta american ockroacha common cockroach in homes. To improve the action of the fungus in a short time, the whole action of boric acid was analyzed, and while using this as possible cockroach insecticide was evaluated, considering that does not affect public health. the fungus was used in aqueous solution to ensure its consumption, and identified the most appropriate dose is between 109 conidia / ml and 1012 conidia / ml, in an exposure time of 5 days following treatment, to ensure higher percent lethality 50%. Besides that boric acid is the best method for inorganic cockroach control, eliminating 90% of them in 3 days in combination with an attractant (food). It was evidenced that can potentiate the action of the fungus, used in conjunction with boric acid and a phagostimulant, which guarantees that cockroaches will have direct contact with dust and fungus. None of the previously used methods represents a danger to public health or to secondary pests that may be affected indirectly, for this reason you can see the use of entomopathogenic as a method of sustainable and efficient biocontrol, for Periplaneta american cockroach.