Malaria infection potential of anopheline mosquitoes sampled by light trapping indoors in coastal Tanzanian villages

C. J. SHIFF, J. N. MINJAS, T. HALL, R. H. HUNT, S. LYIMO, J. R. DAVIS

Research output: Contribution to journalArticle

Abstract

Abstract. Anopheline mosquito populations were studied during 1992 in seven villages south of Bagamoyo, coastal Tanzania, prior to malaria control intervention using insecticide treated bednets. To collect mosquitoes, CDC light traps were used in ten houses per village fortnightly for 12 months. Anopheles females were identified and checked by ELISA for the presence of malaria sporozoite antigen and source of bloodmeal. An. funestus peaked in June‐July after the long rains. Three members of the An. gambiae complex had different seasonality: An. arabiensis, An. gambiae and small numbers of An. merus were collected. In most villages transmission was extremely high and perennial with the entomological inoculation rate reaching three to eleven infective bites per person per night in July and persisting at around 0.1 and 1 for most of the remainder of the year. Sporozoite infection rates within the An. gambiae complex ranged from 2% to 25%, with the peaks in January and July following the two rainy periods. An. funestus showed a similar pattern. The light traps were reliable, simple to operate, and proved to be satisfactory to study the mosquito vector population.

Original languageEnglish (US)
Pages (from-to)256-262
Number of pages7
JournalMedical and Veterinary Entomology
Volume9
Issue number3
DOIs
StatePublished - Jul 1995

Keywords

  • An. funestus
  • An. gambiae
  • An. merus
  • Anopheles arabiensis
  • Tanzania
  • entomological inoculation rate
  • light trap
  • malaria sporozoite rate

ASJC Scopus subject areas

  • Parasitology
  • Ecology, Evolution, Behavior and Systematics
  • veterinary(all)
  • Insect Science

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