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Diffuse retro-reflective imaging for improved mosquito tracking around human baited bednets
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Voloshin, Vitaly, Kröner, Christian, Seniya, Chandrabhan, Murray, Gregory P. D., Guy, Amy, Towers, Catherine E., McCall, Philip J. and Towers, David P. (2020) Diffuse retro-reflective imaging for improved mosquito tracking around human baited bednets. Royal Society Open Science, 7 (5). 191951. doi:10.1098/rsos.191951 ISSN 2054-5703.
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Official URL: http://dx.doi.org/10.1098/rsos.191951
Abstract
Robust imaging techniques for tracking insects have been essential tools in numerous laboratory and field studies on pests, beneficial insects and model systems. Recent innovations in optical imaging systems and associated signal processing have enabled detailed characterisation of nocturnal mosquito behaviour around bednets and improvements in bednet design, a global essential for protecting populations against malaria. Nonetheless, there remain challenges around ease of use for large scale in situ recordings and extracting data reliably in the critical areas of the bednet where the optical signal is attenuated. Here we introduce a retro-reflective screen at the back of the measurement volume, which can simultaneously provide diffuse illumination, and remove optical alignment issues whilst requiring only one-sided access to the measurement space. The illumination becomes significantly more uniform, although, noise removal algorithms are needed to reduce the effects of shot noise particularly across low intensity bednet regions. By systematically introducing mosquitoes in front and behind the bednet in lab experiments we are able to demonstrate robust tracking in these challenging areas. Overall, the retro-reflective imaging setup delivers mosquito segmentation rates in excess of 90% compared to less than 70% with back-lit systems.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | Q Science > QL Zoology R Medicine > RA Public aspects of medicine |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Mosquitoes -- Behavior -- Technology, Anopheles gambiae -- Insecticide resistance, Malaria -- Prevention, Mosquitoes as carriers of disease, Vector control, Entomology -- Research | |||||||||||||||
Journal or Publication Title: | Royal Society Open Science | |||||||||||||||
Publisher: | The Royal Society Publishing | |||||||||||||||
ISSN: | 2054-5703 | |||||||||||||||
Official Date: | 13 May 2020 | |||||||||||||||
Dates: |
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Volume: | 7 | |||||||||||||||
Number: | 5 | |||||||||||||||
Article Number: | 191951 | |||||||||||||||
DOI: | 10.1098/rsos.191951 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
Date of first compliant deposit: | 7 May 2020 | |||||||||||||||
Date of first compliant Open Access: | 7 May 2020 | |||||||||||||||
RIOXX Funder/Project Grant: |
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