Dynamics of the control of Aedes (Stegomyia) aegypti Linnaeus (Diptera, Culicidae) by Bacillus thuringiensis var israelensis, related with temperature, density and concentration of insecticide1

Dengue and dengue hemorrhagic fevers are diseases which etiologic agents are transmitted by the mosquito vector Aedes aegypti Linnaeus, 1762. This species is also capable of transmitting the yellow fever virus. The vector as well as the disease has become an economic and public health problem. Affected countries invest a significant part of the gross domestic product in the vector-disease control. Despite these efforts, the number of cases in Latin America oscillates year by year and in some cases, epidemics appear (Gubler 2002). Currently, the main strategies directed at controlling the vector for dengue in Brazil involve chemical organophosphate (OP) and pyrethroid (P) products. In some cases, the population of mosquitoes changes its susceptibility, developing resistance (Macoris et al. 1995; Macoris et al. 2003, Lima et al. 2003, Braga et al. 2004; Duque et al. 2004). The resistance to insecticides can be reduced by rotation with non-chemical products based upon Bacillus thuringiensis var Dynamics of the control of Aedes (Stegomyia) aegypti Linnaeus (Diptera, Culicidae) by Bacillus thuringiensis var israelensis, related with temperature, density and concentration of insecticide1