The detection and significance of emerging insecticide resistance in mosquitoes

Nancy M Endersby-Harshman; Andrew R Weeks; Ary A Hoffmann

doi:10.1071/MA18022

RESEARCH ARTICLE

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The detection and significance of emerging insecticide resistance in mosquitoes

Nancy M Endersby-Harshman ^A ^B , Andrew R Weeks ^A and Ary A Hoffmann ^A

+ Author Affiliations

- Author Affiliations

^A School of BioSciences, Bio21 Institute, 30 Flemington Road, The University of Melbourne, Vic. 3010, Australia.

^B Tel: +61 3 8344 2281, Email: nancye@unimelb.edu.au

Microbiology Australia 39(2) 80-83 https://doi.org/10.1071/MA18022
Published: 6 April 2018

Abstract

Mosquito-borne arboviruses are increasing in incidence around the world. Australia enjoys some protection from pests and diseases afforded by its geographic isolation coupled with strict biosecurity control at its borders. However, as the volume of global trade, travel and transport expands, risk of exotic incursions to Australia is increasing. Detection of foreign mosquitoes at airports and seaports around Australia is becoming commonplace. The Asian tiger mosquito, Aedes albopictus, which has expanded its range throughout Europe and the Americas¹, has not become established in mainland Australia, but is encountered as an exotic incursion². The yellow fever mosquito and dengue vector, Aedes. aegypti, occurs naturally in northern Queensland, but is also captured at Australia’s ports on a recurrent basis as an incursion from overseas³. Although Ae. aegypti is established in Australia, its detection as an incursion is still cause for concern. Apart from the possibility that invasive mosquitoes will carry exotic arboviruses, genetic characteristics of a foreign insect population can be very different from those observed in local mosquitoes, particularly in terms of insecticide resistance. Our recent research has shown that invading mosquitoes from overseas carry insecticide resistance alleles not found in Australia⁴ and our development of a global genomic database is helping us to pinpoint their source.

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