Plasmodium falciparum: The population structure of mature gametocyte cultures has little effect on their innate fertility

Bruce H. Noden, Patrick S. Beadle, Jefferson A. Vaughan, Charles B. Pumpuni, Melissa D. Kent, John C. Beier

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

In vitro cultured Plasmodium falciparum gametocytes were fed to Anopheles gambiae (G3) mosquitoes to identify parasite population characteristics useful for predicting successful mosquito infections. Parameters were collected from an initial study of 90 infections over a two year period and a second study of 55 infections over 12 weeks. Parasite isolate/clone was identified as the most reliable predictor of gametocyte infectiousness. Parameters such as gametocyte age structure (stage IV:V ratio), exflagellation rate and macrogametocyte maturity were not reliable for predicting infectiousness but were useful for monitoring overall culture maturity. Other variables such as gametocyte density, chronological age of the culture at the time of feed, gametocyte sex ratio, asexual parasitemia, and mixing cultures before mosquito feeding were not predictive. Thus, if a reliable parasite isolate or clone is used, there is no need to measure other characteristics of in vitro gametocyte populations because these will not significantly improve one's ability to predict oocyst infection rates.

Original languageEnglish (US)
Pages (from-to)13-19
Number of pages7
JournalActa Tropica
Volume58
Issue number1
DOIs
StatePublished - Oct 1994
Externally publishedYes

Keywords

  • Anopheles gambiae
  • Gametocyte
  • Malaria
  • Plasmodium falciparum

ASJC Scopus subject areas

  • Parasitology
  • Infectious Diseases

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