How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.

Palpalis-group tsetse, particularly the subspecies of Glossina palpalis and G. fuscipes, are the most important transmitters of human African trypanomiasis (HAT), transmitting >95% of cases. Traps and insecticide-treated targets are used to control tsetse but more cost-effective baits might be de...

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Main Authors: Inaki Tirados, Johan Esterhuizen, Jean Baptiste Rayaisse, Abdoulaye Diarrassouba, Dramane Kaba, Serge Mpiana, Glyn A Vale, Philippe Solano, Michael J Lehane, Stephen J Torr
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2011-08-01
Series:PLoS Neglected Tropical Diseases
Online Access:http://europepmc.org/articles/PMC3149008?pdf=render
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spelling doaj-d9840e1e0bd6463d8058d38a06695b452020-11-24T21:02:57ZengPublic Library of Science (PLoS)PLoS Neglected Tropical Diseases1935-27271935-27352011-08-0158e122610.1371/journal.pntd.0001226How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.Inaki TiradosJohan EsterhuizenJean Baptiste RayaisseAbdoulaye DiarrassoubaDramane KabaSerge MpianaGlyn A ValePhilippe SolanoMichael J LehaneStephen J TorrPalpalis-group tsetse, particularly the subspecies of Glossina palpalis and G. fuscipes, are the most important transmitters of human African trypanomiasis (HAT), transmitting >95% of cases. Traps and insecticide-treated targets are used to control tsetse but more cost-effective baits might be developed through a better understanding of the fly's host-seeking behaviour. Electrocuting grids were used to assess the numbers of G. palpalis palpalis and G. fuscipes quanzensis attracted to and landing on square or oblong targets of black cloth varying in size from 0.01 m(2) to 1.0 m(2). For both species, increasing the size of a square target from 0.01 m(2) (dimensions=0.1 × 0.1 m) to 1.0 m(2) (1.0 × 1.0 m) increased the catch ~4x however the numbers of tsetse killed per unit area of target declined with target size suggesting that the most cost efficient targets are not the largest. For G. f. quanzensis, horizontal oblongs, (1 m wide × 0.5 m high) caught ~1.8x more tsetse than vertical ones (0.5 m wide × 1.0 m high) but the opposite applied for G. p. palpalis. Shape preference was consistent over the range of target sizes. For G. p. palpalis square targets caught as many tsetse as the oblong; while the evidence is less strong the same appears to apply to G. f. quanzensis. The results suggest that targets used to control G. p. palpalis and G. f. quanzensis should be square, and that the most cost-effective designs, as judged by the numbers of tsetse caught per area of target, are likely to be in the region of 0.25 × 0.25 m(2). The preference of G. p. palpalis for vertical oblongs is unique amongst tsetse species, and it is suggested that this response might be related to its anthropophagic behaviour and hence importance as a vector of HAT.http://europepmc.org/articles/PMC3149008?pdf=render
collection DOAJ
language English
format Article
sources DOAJ
author Inaki Tirados
Johan Esterhuizen
Jean Baptiste Rayaisse
Abdoulaye Diarrassouba
Dramane Kaba
Serge Mpiana
Glyn A Vale
Philippe Solano
Michael J Lehane
Stephen J Torr
spellingShingle Inaki Tirados
Johan Esterhuizen
Jean Baptiste Rayaisse
Abdoulaye Diarrassouba
Dramane Kaba
Serge Mpiana
Glyn A Vale
Philippe Solano
Michael J Lehane
Stephen J Torr
How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.
PLoS Neglected Tropical Diseases
author_facet Inaki Tirados
Johan Esterhuizen
Jean Baptiste Rayaisse
Abdoulaye Diarrassouba
Dramane Kaba
Serge Mpiana
Glyn A Vale
Philippe Solano
Michael J Lehane
Stephen J Torr
author_sort Inaki Tirados
title How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.
title_short How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.
title_full How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.
title_fullStr How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.
title_full_unstemmed How do tsetse recognise their hosts? The role of shape in the responses of tsetse (Glossina fuscipes and G. palpalis) to artificial hosts.
title_sort how do tsetse recognise their hosts? the role of shape in the responses of tsetse (glossina fuscipes and g. palpalis) to artificial hosts.
publisher Public Library of Science (PLoS)
series PLoS Neglected Tropical Diseases
issn 1935-2727
1935-2735
publishDate 2011-08-01
description Palpalis-group tsetse, particularly the subspecies of Glossina palpalis and G. fuscipes, are the most important transmitters of human African trypanomiasis (HAT), transmitting >95% of cases. Traps and insecticide-treated targets are used to control tsetse but more cost-effective baits might be developed through a better understanding of the fly's host-seeking behaviour. Electrocuting grids were used to assess the numbers of G. palpalis palpalis and G. fuscipes quanzensis attracted to and landing on square or oblong targets of black cloth varying in size from 0.01 m(2) to 1.0 m(2). For both species, increasing the size of a square target from 0.01 m(2) (dimensions=0.1 × 0.1 m) to 1.0 m(2) (1.0 × 1.0 m) increased the catch ~4x however the numbers of tsetse killed per unit area of target declined with target size suggesting that the most cost efficient targets are not the largest. For G. f. quanzensis, horizontal oblongs, (1 m wide × 0.5 m high) caught ~1.8x more tsetse than vertical ones (0.5 m wide × 1.0 m high) but the opposite applied for G. p. palpalis. Shape preference was consistent over the range of target sizes. For G. p. palpalis square targets caught as many tsetse as the oblong; while the evidence is less strong the same appears to apply to G. f. quanzensis. The results suggest that targets used to control G. p. palpalis and G. f. quanzensis should be square, and that the most cost-effective designs, as judged by the numbers of tsetse caught per area of target, are likely to be in the region of 0.25 × 0.25 m(2). The preference of G. p. palpalis for vertical oblongs is unique amongst tsetse species, and it is suggested that this response might be related to its anthropophagic behaviour and hence importance as a vector of HAT.
url http://europepmc.org/articles/PMC3149008?pdf=render
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