Artículo
Is Imidacloprid an Effective Alternative to Control Pyrethroi-resistant populations of Triatoma infestans in the Gran Chaco Ecoregion?
Fecha de publicación:
09/2014
Editorial:
Fundacao Oswaldo Cruz
Revista:
Memórias Do Instituto Oswaldo Cruz
ISSN:
0074-0276
e-ISSN:
1678-8060
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The prevention of Chagas disease is based primarily on the chemical control of Triatoma infestans (Klug) using pyrethroid insecticides. However, high resistance levels, correlated with control failures, have been detected in Argentina and Bolivia. A previous study at our laboratory found that imidacloprid could serve as an alternative to pyrethroid insecticides. We studied the delayed toxicity of imidacloprid and the influence of the blood feeding condition of the insect on the toxicity of this insecticide; we also studied the effectiveness of various commercial imidacloprid formulations against a pyrethroid-resistant T. infestans population from the Gran Chaco ecoregion. Variations in the toxic effects of imidacloprid were not observed up to 72 h after exposure and were not found to depend on the blood feeding condition of susceptible and resistant individuals. Of the three different studied formulations of imidacloprid on glass and filter paper, only the spot-on formulation was effective. This formulation was applied to pigeons at doses of 1, 5, 20 and 40 mg/bird. The nymphs that fed on pigeons treated with 20 mg or 40 mg of the formulation showed a higher mortality rate than the control group one day and seven days post-treatment (p < 0.01). A spot-on formulation of imidacloprid was effective against pyrethroid-resistant T. infestans populations at the laboratory level
Palabras clave:
Triatoma Infestans
,
Imidacloprid
,
Formulation
,
Neglected Tropical Disease
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(UNIDEF)
Articulos de UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICOS PARA LA DEFENSA
Articulos de UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICOS PARA LA DEFENSA
Citación
Carvajal, Guillermo; Picollo, Maria Ines; Toloza, Ariel Ceferino; Is Imidacloprid an Effective Alternative to Control Pyrethroi-resistant populations of Triatoma infestans in the Gran Chaco Ecoregion?; Fundacao Oswaldo Cruz; Memórias Do Instituto Oswaldo Cruz; 109; 6; 9-2014; 1-6
Compartir