An attempt to control Phlebotomine sand flies (Diptera

Psychodidae) by residual spraying with deltamethrin in a Colombian village.

B. Alexander, C. Jaramillo, M. C. Usma, B. L. Quesada, H. Cadena, W. Roa, Bruno Travi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)421-424
Number of pages4
JournalMemórias do Instituto Oswaldo Cruz
Volume90
Issue number3
StatePublished - May 1995
Externally publishedYes

Fingerprint

Psychodidae
Spraying
Diptera
Sand
Insecticides
Insect Control
Colombia
Bioassay
Rural Population
Bites and Stings
Biological Assay
decamethrin
Population

ASJC Scopus subject areas

  • Infectious Diseases
  • Virology
  • Immunology
  • Microbiology (medical)
  • Clinical Biochemistry

Cite this

An attempt to control Phlebotomine sand flies (Diptera : Psychodidae) by residual spraying with deltamethrin in a Colombian village. / Alexander, B.; Jaramillo, C.; Usma, M. C.; Quesada, B. L.; Cadena, H.; Roa, W.; Travi, Bruno.

In: Memórias do Instituto Oswaldo Cruz, Vol. 90, No. 3, 05.1995, p. 421-424.

Research output: Contribution to journalArticle

Alexander, B. ; Jaramillo, C. ; Usma, M. C. ; Quesada, B. L. ; Cadena, H. ; Roa, W. ; Travi, Bruno. / An attempt to control Phlebotomine sand flies (Diptera : Psychodidae) by residual spraying with deltamethrin in a Colombian village. In: Memórias do Instituto Oswaldo Cruz. 1995 ; Vol. 90, No. 3. pp. 421-424.
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