Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes.
BACKGROUND: Most cases of human African trypanosomiasis (HAT) start with a bite from one of the subspecies of Glossina fuscipes. Tsetse use a range of olfactory and visual stimuli to locate their hosts and this response can be exploited to lure tsetse to insecticide-treated targets thereby reducing...
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ftdoajarticles:oai:doaj.org/article:db70102b787a457fb2a4c1f799b248fe 2023-05-15T15:16:06+02:00 Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. Jenny M Lindh Parikshit Goswami Richard S Blackburn Sarah E J Arnold Glyn A Vale Mike J Lehane Steve J Torr 2012-01-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0001661 https://doaj.org/article/db70102b787a457fb2a4c1f799b248fe EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3362611?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0001661 https://doaj.org/article/db70102b787a457fb2a4c1f799b248fe PLoS Neglected Tropical Diseases, Vol 6, Iss 5, p e1661 (2012) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2012 ftdoajarticles https://doi.org/10.1371/journal.pntd.0001661 2022-12-31T03:48:37Z BACKGROUND: Most cases of human African trypanosomiasis (HAT) start with a bite from one of the subspecies of Glossina fuscipes. Tsetse use a range of olfactory and visual stimuli to locate their hosts and this response can be exploited to lure tsetse to insecticide-treated targets thereby reducing transmission. To provide a rational basis for cost-effective designs of target, we undertook studies to identify the optimal target colour. METHODOLOGY/PRINCIPAL FINDINGS: On the Chamaunga islands of Lake Victoria , Kenya, studies were made of the numbers of G. fuscipes fuscipes attracted to targets consisting of a panel (25 cm square) of various coloured fabrics flanked by a panel (also 25 cm square) of fine black netting. Both panels were covered with an electrocuting grid to catch tsetse as they contacted the target. The reflectances of the 37 different-coloured cloth panels utilised in the study were measured spectrophotometrically. Catch was positively correlated with percentage reflectance at the blue (460 nm) wavelength and negatively correlated with reflectance at UV (360 nm) and green (520 nm) wavelengths. The best target was subjectively blue, with percentage reflectances of 3%, 29%, and 20% at 360 nm, 460 nm and 520 nm respectively. The worst target was also, subjectively, blue, but with high reflectances at UV (35% reflectance at 360 nm) wavelengths as well as blue (36% reflectance at 460 nm); the best low UV-reflecting blue caught 3× more tsetse than the high UV-reflecting blue. CONCLUSIONS/SIGNIFICANCE: Insecticide-treated targets to control G. f. fuscipes should be blue with low reflectance in both the UV and green bands of the spectrum. Targets that are subjectively blue will perform poorly if they also reflect UV strongly. The selection of fabrics for targets should be guided by spectral analysis of the cloth across both the spectrum visible to humans and the UV region. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLoS Neglected Tropical Diseases 6 5 e1661 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Jenny M Lindh Parikshit Goswami Richard S Blackburn Sarah E J Arnold Glyn A Vale Mike J Lehane Steve J Torr Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
BACKGROUND: Most cases of human African trypanosomiasis (HAT) start with a bite from one of the subspecies of Glossina fuscipes. Tsetse use a range of olfactory and visual stimuli to locate their hosts and this response can be exploited to lure tsetse to insecticide-treated targets thereby reducing transmission. To provide a rational basis for cost-effective designs of target, we undertook studies to identify the optimal target colour. METHODOLOGY/PRINCIPAL FINDINGS: On the Chamaunga islands of Lake Victoria , Kenya, studies were made of the numbers of G. fuscipes fuscipes attracted to targets consisting of a panel (25 cm square) of various coloured fabrics flanked by a panel (also 25 cm square) of fine black netting. Both panels were covered with an electrocuting grid to catch tsetse as they contacted the target. The reflectances of the 37 different-coloured cloth panels utilised in the study were measured spectrophotometrically. Catch was positively correlated with percentage reflectance at the blue (460 nm) wavelength and negatively correlated with reflectance at UV (360 nm) and green (520 nm) wavelengths. The best target was subjectively blue, with percentage reflectances of 3%, 29%, and 20% at 360 nm, 460 nm and 520 nm respectively. The worst target was also, subjectively, blue, but with high reflectances at UV (35% reflectance at 360 nm) wavelengths as well as blue (36% reflectance at 460 nm); the best low UV-reflecting blue caught 3× more tsetse than the high UV-reflecting blue. CONCLUSIONS/SIGNIFICANCE: Insecticide-treated targets to control G. f. fuscipes should be blue with low reflectance in both the UV and green bands of the spectrum. Targets that are subjectively blue will perform poorly if they also reflect UV strongly. The selection of fabrics for targets should be guided by spectral analysis of the cloth across both the spectrum visible to humans and the UV region. |
format |
Article in Journal/Newspaper |
author |
Jenny M Lindh Parikshit Goswami Richard S Blackburn Sarah E J Arnold Glyn A Vale Mike J Lehane Steve J Torr |
author_facet |
Jenny M Lindh Parikshit Goswami Richard S Blackburn Sarah E J Arnold Glyn A Vale Mike J Lehane Steve J Torr |
author_sort |
Jenny M Lindh |
title |
Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. |
title_short |
Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. |
title_full |
Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. |
title_fullStr |
Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. |
title_full_unstemmed |
Optimizing the colour and fabric of targets for the control of the tsetse fly Glossina fuscipes fuscipes. |
title_sort |
optimizing the colour and fabric of targets for the control of the tsetse fly glossina fuscipes fuscipes. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2012 |
url |
https://doi.org/10.1371/journal.pntd.0001661 https://doaj.org/article/db70102b787a457fb2a4c1f799b248fe |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 6, Iss 5, p e1661 (2012) |
op_relation |
http://europepmc.org/articles/PMC3362611?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0001661 https://doaj.org/article/db70102b787a457fb2a4c1f799b248fe |
op_doi |
https://doi.org/10.1371/journal.pntd.0001661 |
container_title |
PLoS Neglected Tropical Diseases |
container_volume |
6 |
container_issue |
5 |
container_start_page |
e1661 |
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1766346407681196032 |