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Suitability of two carbon dioxide-baited traps for mosquito surveillance in the United Kingdom

Published online by Cambridge University Press:  12 November 2007

R.A. Hutchinson ,
P.A. West  and
S.W. Lindsay
R.A. Hutchinson
Affiliation:
School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, UK
P.A. West
Affiliation:
School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, UK
S.W. Lindsay*
Affiliation:
School of Biological and Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, UK
*
*Author for correspondence Fax: +44 (0)191 334 1289 E-mail: S.W.Lindsay@durham.ac.uk
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Abstract

Rapidly changing environments and an increase in human movement around the globe have contributed to a rise in new and emerging diseases, many of which are arthropod borne. The threat posed to the United Kingdom by such diseases is uncertain, and there is a real need to understand the distribution, seasonality and behaviour of potential vectors in the country. At present, there is no standard method for routine mosquito surveillance in the UK. Here we compared the catching efficiency of two carbon dioxide-baited traps, the CDC light trap and the MosquitoMagnet® Pro trap, for collecting British mosquitoes. Two of each type of trap were operated at four sites in central and southern England from June to September, 2003. To determine whether trap height affected collections, three light traps were operated at 1, 2.5 and 5 m above the ground in one site in 2004. Both types of trap were efficient at catching mosquitoes, collecting 5414 mosquitoes of 16 species. MosquitoMagnet® traps caught 2.7 times more mosquitoes than CDC light traps (P<0.001) and a wider range of species (16 species vs 11) than CDC light traps. Four to six times more female Culex pipiens s.l. were collected in light traps at 5 m (P<0.001) compared with traps at lower heights. MosquitoMagnet® traps ran continuously for up to 8 weeks, whilst the battery of a CDC light trap had to be replaced every 24 hrs. Although MosquitoMagnets® collected more specimens and a greater range of mosquito species, they were considerably more expensive, prone to breakdown and incurred higher running costs than the CDC light traps. MosquitoMagnets® are useful tools for collecting mosquitoes during longitudinal surveys during the summer months, whilst CDC light traps are to be preferred for rapid assessments of the presence or absence of mosquitoes, particularly the important species Culex pipiens.

Keywords

CDC light trapCO2-baited trapsCulex pipiensmosquito-borne diseasesMosquitoMagnet®UKvector surveillance
Type
Research Article
Information
Bulletin of Entomological Research , Volume 97 , Issue 6 , December 2007 , pp. 591 - 597
Copyright
Copyright © Cambridge University Press 2007

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