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Identification of human skin bacteria attractive to the Asian Tiger mosquito.

S. Michalet,Guillaume Minard,W. Chevalier,Guillaume Meiffren,Yoann Saucereau,V. T. Van,G. Comte,Florence-Hélène Tran,Claire Valiente Moro

Published 2019 in Environmental Microbiology

ABSTRACT

Aedes albopictus is a vector of arboviruses and filarial nematodes. Originating from Asia, this mosquito has rapidly expanded its geographical distribution and colonized areas across both temperate and tropical regions. Due to the increase in insecticide resistance, the use of environmentally friendly vector control methods is encouraged worldwide. Using methods based on semiochemicals in baited traps are promising for management of mosquito populations. Interestingly, human skin microbiota was shown to generate volatile compounds that attract the mosquito species Anopheles gambiae and Aedes aegypti. Here, we investigated the composition of skin bacteria from different volunteers and the attractive potential of individual isolates to nulliparous Ae. albopictus females. We showed that 3 out of 16 tested isolates were more attractive and 2 were more repulsive. We identified dodecenol as being preferentially produced by attractive isolates and 2-methyl-1-butanol (and to a lesser extent 3-methyl-1-butanol) as being overproduced by these isolates compared to the other ones. Those bacterial volatile organic compounds represent promising candidates but further studies are needed to evaluate their potential application for baited traps improvement. This article is protected by copyright. All rights reserved.

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