Country-wide prevalence of Ascogregarina culicis (apicomplexa: lecudinidae), a protozoan parasite of Aedes aegypti in Trinidad, West Indies.

J. C. Beier, D. D. Chadee, A. Charran, N. M. Comiskey, D. M. Wesson

Research output: Contribution to journalArticle

11 Scopus citations


The prevalence of the gregarine parasite Ascogregarina culicis was determined for Aedes aegypti populations in Trinidad, West Indies. Over 5 months, a total of 5,651 Ae. aegypti larvae were collected and identified from 419 sites throughout Trinidad as part of a national dengue surveillance program. Ascogregarina culicis infections were detected in 13.4% of 1,986 Ae. aegypti larvae dissected. In 7 of 8 counties or major subdivisions where this parasite was detected in Trinidad, the prevalence per locality ranged from 9.6 to 17.1% with an associated parasite density of 19.1-51.9 trophozoites/larva. Confirming that Ae. aegypti populations in Trinidad are highly susceptible to infection with A. culicis parasites, experimental studies showed that a strain of A. culicis from Florida readily infected 3 strains of Ae. aegypti from Trinidad with essentially no associated mortality. This report extends the known geographic range of A. culicis in Ae. aegypti populations and represents one of the first country-wide surveys for this gregarine parasite.

Original languageEnglish (US)
Pages (from-to)419-423
Number of pages5
JournalJournal of the American Mosquito Control Association
Issue number4
StatePublished - Dec 1995


ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Public Health, Environmental and Occupational Health
  • Insect Science

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