3 research outputs found
Simulium spp. control program in Rio Grande do Sul, Brazil
Insects of the Simuliidae family have been the object of control in Rio
Grande do Sul since the 70s. Their constant attacks became a
social-economical problem as well as a problem of Public Health, with
serious consequences to men and to the economy of the areas in which
the insects develop. At first, the control was done with a chemical
larvicide Themephos ABATE 500 E, but an imperfect measuring of outflow
to determine the quantity of the product made Simulium spp. resistant
to it. From 1983 on, following a study of a new method for the outflow
measuring, we started to use a biological larvicide Bacillus
thuringiensis serovar israelensis based. The biological control uses
the new method in 36.4% of the state area, assisting about 3,500,000
inhabitants