Dry season ecology of Anopheles gambiae complex mosquitoes in The Gambia.

Malaria Journal
Musa JawaraDavid J Conway

Abstract

Malaria in The Gambia is highly seasonal, with transmission occurring as Anopheles gambiae s.l. populations expand during and immediately after a single annual rainy season that lasts from June to October. There has been very limited investigation of the ecology of vectors during the dry season, when numbers are very limited and distributions may be restricted. Weekly adult mosquito collections (pyrethrum spray, light trap, and search collections from rooms, as well as light trap collections from animal shelters, abandoned wells and grain stores), and artificial sentinel breeding site surveys were performed in four villages near the upper tidal and partially saline part of the Gambia River in the last four months of an annual dry season (March to June). Mosquito species were identified by morphological and DNA analysis, and ELISA assays were performed to test for Plasmodium falciparum sporozoites and human blood meal components. Adults of An. gambiae s.l. were collected throughout the period, numbers increasing towards the end of the dry season when humidity was increasing. Adult collections were dominated by An. melas (86%), with An. gambiae s.s. (10%) and An. arabiensis (3%) also present throughout. Most females collected in ...Continue Reading

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Citations

Aug 3, 2010·Environmental Health Perspectives·Alessandro Barghini, Bruno A S de Medeiros
Sep 3, 2010·The American Journal of Tropical Medicine and Hygiene·Tovi LehmannCecilia Coscaron-Arias
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Aug 20, 2008·Malaria Journal·Musa JawaraDavid J Conway
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Methods Mentioned

BETA
ELISA
PCR
light trap

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