West Nile virus vector Culex modestus established in southern England

Particle and Fibre Toxicology

Stefanie M Schäfer¹  Alexander GC Vaux²  Bethan V Purse³  Jolyon M Medlock²  Miles A Nunn¹  Nick Golding¹ 

[1] Centre for Ecology & Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB, UK;Medical Entomology & Zoonoses Ecology group, Microbial Risk Assessment, Emergency Response Department, Health Protection Agency, Porton Down, Salisbury, Wiltshire SP4 0JG, UK;Centre for Ecology & Hydrology, Bush Estate, Penicuik, Midlothian, EH26 0QB, UK

关键词: West Nile virus;    Introduced Species;    Taxonomic;    DNA Barcoding;    Disease Vectors;    Culicidae;    Culex;    Arboviruses;    Anopheles;   

Others  :  1233083
DOI  :  10.1186/1756-3305-5-32

 received in 2011-11-10, accepted in 2012-02-09,  发布年份 2012

【 摘 要 】

Background

The risk posed to the United Kingdom by West Nile virus (WNV) has previously been considered low, due to the absence or scarcity of the main Culex sp. bridge vectors. The mosquito Culex modestus is widespread in southern Europe, where it acts as the principle bridge vector of WNV. This species was not previously thought to be present in the United Kingdom.

Findings

Mosquito larval surveys carried out in 2010 identified substantial populations of Cx. modestus at two sites in marshland in southeast England. Host-seeking-adult traps placed at a third site indicate that the relative seasonal abundance of Cx. modestus peaks in early August. DNA barcoding of these specimens from the United Kingdom and material from southern France confirmed the morphological identification.

Conclusions

Cx. modestus appears to be established in the North Kent Marshes, possibly as the result of a recent introduction. The addition of this species to the United Kingdom's mosquito fauna may increase the risk posed to the United Kingdom by WNV.

【 授权许可】

   
2012 Golding et al; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

Figure 2.

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