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      Estado de la resistencia a insecticidas en adultos del mosquito Aedes aegypti del municipio Playa, Ciudad de La Habana, Cuba

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          Abstract

          Se determinó el nivel de susceptibilidad y/o resistencia de mosquitos adultos en una cepa de Aedes aegypti (L) colectada en el municipio Playa, Ciudad de La Habana, en relación con los insecticidas lambdacialotrina, clorpirifos y cipermetrina. Los resultados demostraron que la cepa en estudio no es resistente para los insecticidas lambdacialotrina y cipermetrina (FR< 5X) y para el insecticida clorpirifos se comporta igual de susceptible que la cepa de referencia CAREC (FR = 1).

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          Most cited references 34

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          A Method of Computing the Effectiveness of an Insecticide

           W. Abbott (1925)
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            A method for computing the efectiveness of an insecticide

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              Cross-resistance to pyrethroid and organophosphorus insecticides induced by selection with temephos in Aedes aegypti (Diptera: Culicidae) from Cuba.

              A sample of Aedes aegypti (L.) from Santiago de Cuba, Cuba, with a high level of temephos resistance (19.58x at the 50% lethal concentration [LC50]), was subjected to temephos selection to evaluate the utility of this organophosphate insecticide for mosquito control. High resistance developed after six generations of selection (200.00x). Little or no cross-resistance was observed to the organophosphates, malathion and fenitrothion, but high cross-resistance was observed for the pyrethroid deltamethrin (337.5x) and the organophosphate fenthion (12.74x). Synergism tests implicated detoxifying esterases in temephos and fenthion resistance and deltamethrin resistance was associated with a cytochrome P450 monooxygenasa. Biochemical tests, polyacrylamide gel electrophoresis (PAGE), and inhibition studies confirmed the presence of elevated esterase activity associated with temephos resistance. Pyrethroid resistance could be associated with a glutathione-S-transferase mechanism but not the esterases. The cross-resistance to deltamethrin from temephos selection could limit the use of both insecticides for Ae. aegypti control.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                mtr
                Revista Cubana de Medicina Tropical
                Rev Cubana Med Trop
                Centro Nacional de Información de Ciencias Médicas (Ciudad de la Habana )
                1561-3054
                August 2005
                : 57
                : 2
                : 125-132
                Affiliations
                [1 ] Universidade Estadual de Maringá Brazil
                Article
                S0375-07602005000200008

                http://creativecommons.org/licenses/by/4.0/

                Product
                Product Information: SciELO Cuba
                Categories
                TROPICAL MEDICINE

                Infectious disease & Microbiology

                Resistencia a insecticidas,, Aedes aegypti, adulto, Cuba

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