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A survey of larval and adult mosquitoes on the flood plains of Bangladesh, in relation to flood-control activities



A survey of larval and adult mosquitoes on the flood plains of Bangladesh, in relation to flood-control activities



Annals of Tropical Medicine and Parasitology 90(6): 621-634



A mosquito survey was carried out between October 1991 and November 1992 on the flood plains of Bangladesh, as part of a baseline study designed to help predict the effects on vector-borne diseases of embanking rivers under the Bangladesh Government's Flood Action Plan. Overall, 15 species of larval and 15 species of adult anophelines were collected, along with 13 larval and 21 adult culicines. Anophelines made up only 6% of the mosquitoes caught at human bait. The most abundant anopheline biting man was Anopheles vagus, the dominant species in all nine sampling villages. The other recognized malaria vectors in the flood plains of Bangladesh, namely An. philippinensis, An. aconitus and An. annularis, were collected but in relatively low numbers. Culex vishnui was the most abundant biting culicine in all villages. Biting mosquitoes showed a bimodal seasonality of biting, with peaks between February and April and September and October. All biting mosquitoes showed a significant preference for outdoor biting. The densities of the mosquito populations are more likely to be affected by the large-scale environmental changes which have occurred in Bangladesh, as well as the dramatic increase in the density of the human population, than by the river embankments per se.

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Accession: 002743871

Download citation: RISBibTeXText

PMID: 9039274

DOI: 10.1080/00034983.1996.11813092


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