Relationships between body size of Anopheles mosquitoes and Plasmodium falciparum sporozoite rates along the Kenya coast

Joseph M. Mwangangi, Charles M. Mbogo, Joseph G. Nzovu, Ephantus W. Kabiru, Henry Mwambi, John I. Githure, John C. Beier

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

The influence of body size of Anopheles gambiae s.s., Anopheles arabiensis, Anopheles merus, and Anopheles funestus on the transmission of Plasmodium falciparum was studied at 3 sites along the Kenyan coast. Adult mosquitoes were collected inside houses by pyrethrum spray collection (PSC) from April to September 2001. Wing length was measured microscopically to the nearest 0.01 mm as an index of mosquito body size. The P. falciparum circumsporozoite protein (CSP) was detected by enzyme-linked immunosorbent assay technique. A total of 1,715 anopheline mosquitoes were collected, of which 785 (45.77%) were An. gambiae s.s., 54 (3.15%) An. arabiensis, An. merus 27 (1.57%), and 849 (49.5%) were An. funestus. The mean wing length for An. gambiae s.s. was 2.94 mm and that of An. funestus was 2.50 mm. There was no site-to-site variation in the body size of An. gambiae or An. funestus. There was no significant difference in wing length between sporozoite-infected and uninfected An. gambiae s.s., and the same was found for An. funestus. At the 3 rural coastal sites in Kenya, the efficiency of malaria parasite transmission does not appear to be influenced by variation in vector body size.

Original languageEnglish (US)
Pages (from-to)390-394
Number of pages5
JournalJournal of the American Mosquito Control Association
Volume20
Issue number4
StatePublished - Dec 1 2004

Keywords

  • An. funestus
  • Anopheles gambiae
  • Circumsporozoite protein
  • ELISA
  • Malaria transmission
  • Sporozoite rates
  • Wing length

ASJC Scopus subject areas

  • Insect Science

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