An attempt to control Phlebotomine sand flies (Diptera: Psychodidae) by residual spraying with deltamethrin in a Colombian village
Mem. Inst. Oswaldo Cruz
;
90(3): 421-424, May-Jun. 1995.
Artigo
em Inglês
| LILACS
| ID: lil-319881
RESUMO
An attempt was made to control phlebotomine sand flies biting indoors in a rural community near Cali, Colombia, using the residual insecticide "K-Othrine" (deltamethrin) sprayed on the inside walls of houses. Twelve houses were divided into matched pairs based on physical characteristics, one house in each pair being left untreated while the inside walls of the other were sprayed with 1 deltamethrin at a concentration of 500 mg a.i./m2. Sand flies were sampled each week using protected human bait and sticky trap collections for four months after spraying. The number of sand flies (Lutzomyia youngi) collected on sticky traps was significantly lower (P = 0.004) in the untreated houses than in the treated ones with which they were matched. This difference was not significant for L. columbiana; the other anthropophilic species were not present in large numbers. The numbers collected on human bait in treated and untreated houses were not significantly different for either species. Activity of the insecticide as determined by contact bioassays remained high throughout the study and failure to control the insects was attributed to two factors the tendency of sand flies to bite before making contact with the insecticide and the fact that the number of sand flies that entered houses represented a relatively small proportion of the population in the wooded areas surrounding the settlement in the study.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Psychodidae
/
Piretrinas
/
Controle de Insetos
/
Inseticidas
Limite:
Animais
/
Feminino
/
Humanos
/
Masculino
País/Região como assunto:
América do Sul
/
Colômbia
Idioma:
Inglês
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
Medicina Tropical
/
Parasitologia
Ano de publicação:
1995
Tipo de documento:
Artigo
País de afiliação:
Colômbia
Instituição/País de afiliação:
Centro Internacional de Entrenamiento e Investigaciones Médicas/CO
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