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Attraction of Female Aedes aegypti (L.) to Aphid Honeydew

Department of Biological Sciences, Faculty of Science, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
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Insects 2019, 10(2), 43; https://doi.org/10.3390/insects10020043
Received: 4 January 2019 / Revised: 19 January 2019 / Accepted: 22 January 2019 / Published: 1 February 2019
(This article belongs to the Special Issue Integrative Mosquito Biology: From Molecules to Ecosystems)
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Abstract

Plant sugar is an essential dietary constituent for mosquitoes, and hemipteran honeydew is one of the many forms of plant sugar that is important to mosquitoes. Many insects rely on volatile honeydew semiochemicals to locate aphids or honeydew itself. Mosquitoes exploit volatile semiochemicals to locate sources of plant sugar but their attraction to honeydew has not previously been investigated. Here, we report the attraction of female yellow fever mosquitoes, Aedes aegypti, to honeydew odorants from the green peach aphid, Myzus persicae, and the pea aphid, Acyrthosiphon pisum, feeding on fava bean, Vicia faba. We used solid phase micro-extraction and gas chromatography-mass spectrometry to collect and analyze headspace odorants from the honeydew of A. pisum feeding on V. faba. An eight-component synthetic blend of these odorants and synthetic odorant blends of crude and sterile honeydew that we prepared according to literature data all attracted female A. aegypti. The synthetic blend containing microbial odor constituents proved more effective than the blend without these constituents. Our study provides the first evidence for anemotactic attraction of mosquitoes to honeydew and demonstrates a role for microbe-derived odorants in the attraction of mosquitoes to essential plant sugar resources. View Full-Text
Keywords: Aedes aegypti; Acyrthosiphon pisum; Myzus persicae; Vicia faba; honeydew; honeydew odorants; mosquito sugar feeding; microbe-emitted odorants; mosquito olfaction Aedes aegypti; Acyrthosiphon pisum; Myzus persicae; Vicia faba; honeydew; honeydew odorants; mosquito sugar feeding; microbe-emitted odorants; mosquito olfaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Peach, D.A.H.; Gries, R.; Young, N.; Lakes, R.; Galloway, E.; Alamsetti, S.K.; Ko, E.; Ly, A.; Gries, G. Attraction of Female Aedes aegypti (L.) to Aphid Honeydew. Insects 2019, 10, 43.

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