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

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.

journal_name

Acta Trop

journal_title

Acta tropica

authors

Noden BH,Beadle PS,Vaughan JA,Pumpuni CB,Kent MD,Beier JC

doi

10.1016/0001-706x(94)90117-1

subject

Has Abstract

pub_date

1994-10-01 00:00:00

pages

13-9

issue

1

eissn

0001-706X

issn

1873-6254

pii

0001-706X(94)90117-1

journal_volume

58

pub_type

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