Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis.
We are attempting to develop cost-effective control methods for the important vector of sleeping sickness, Glossina fuscipes spp. Responses of the tsetse flies Glossina fuscipes fuscipes (in Kenya) and G. f. quanzensis (in Democratic Republic of Congo) to natural host odours are reported. Arrangemen...
Published in: | PLoS Neglected Tropical Diseases |
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2009
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ftdoajarticles:oai:doaj.org/article:a7681d23ef8e491ba11672844ad682d1 2023-05-15T15:17:36+02:00 Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. Maurice O Omolo Ahmed Hassanali Serge Mpiana Johan Esterhuizen Jenny Lindh Mike J Lehane Philippe Solano Jean Baptiste Rayaisse Glyn A Vale Steve J Torr Inaki Tirados 2009-01-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0000435 https://doaj.org/article/a7681d23ef8e491ba11672844ad682d1 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC2674566?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0000435 https://doaj.org/article/a7681d23ef8e491ba11672844ad682d1 PLoS Neglected Tropical Diseases, Vol 3, Iss 5, p e435 (2009) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2009 ftdoajarticles https://doi.org/10.1371/journal.pntd.0000435 2022-12-31T11:41:28Z We are attempting to develop cost-effective control methods for the important vector of sleeping sickness, Glossina fuscipes spp. Responses of the tsetse flies Glossina fuscipes fuscipes (in Kenya) and G. f. quanzensis (in Democratic Republic of Congo) to natural host odours are reported. Arrangements of electric nets were used to assess the effect of cattle-, human- and pig-odour on (1) the numbers of tsetse attracted to the odour source and (2) the proportion of flies that landed on a black target (1x1 m). In addition responses to monitor lizard (Varanus niloticus) were assessed in Kenya. The effects of all four odours on the proportion of tsetse that entered a biconical trap were also determined. Sources of natural host odour were produced by placing live hosts in a tent or metal hut (volumes approximately 16 m(3)) from which the air was exhausted at approximately 2000 L/min. Odours from cattle, pigs and humans had no significant effect on attraction of G. f. fuscipes but lizard odour doubled the catch (P<0.05). Similarly, mammalian odours had no significant effect on landing or trap entry whereas lizard odour increased these responses significantly: landing responses increased significantly by 22% for males and 10% for females; the increase in trap efficiency was relatively slight (5-10%) and not always significant. For G. f. quanzensis, only pig odour had a consistent effect, doubling the catch of females attracted to the source and increasing the landing response for females by approximately 15%. Dispensing CO(2) at doses equivalent to natural hosts suggested that the response of G. f. fuscipes to lizard odour was not due to CO(2). For G. f. quanzensis, pig odour and CO(2) attracted similar numbers of tsetse, but CO(2) had no material effect on the landing response. The results suggest that identifying kairomones present in lizard odour for G. f. fuscipes and pig odour for G. f. quanzensis may improve the performance of targets for controlling these species. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic The Landing ENVELOPE(-45.689,-45.689,-60.733,-60.733) PLoS Neglected Tropical Diseases 3 5 e435 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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 Maurice O Omolo Ahmed Hassanali Serge Mpiana Johan Esterhuizen Jenny Lindh Mike J Lehane Philippe Solano Jean Baptiste Rayaisse Glyn A Vale Steve J Torr Inaki Tirados Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
We are attempting to develop cost-effective control methods for the important vector of sleeping sickness, Glossina fuscipes spp. Responses of the tsetse flies Glossina fuscipes fuscipes (in Kenya) and G. f. quanzensis (in Democratic Republic of Congo) to natural host odours are reported. Arrangements of electric nets were used to assess the effect of cattle-, human- and pig-odour on (1) the numbers of tsetse attracted to the odour source and (2) the proportion of flies that landed on a black target (1x1 m). In addition responses to monitor lizard (Varanus niloticus) were assessed in Kenya. The effects of all four odours on the proportion of tsetse that entered a biconical trap were also determined. Sources of natural host odour were produced by placing live hosts in a tent or metal hut (volumes approximately 16 m(3)) from which the air was exhausted at approximately 2000 L/min. Odours from cattle, pigs and humans had no significant effect on attraction of G. f. fuscipes but lizard odour doubled the catch (P<0.05). Similarly, mammalian odours had no significant effect on landing or trap entry whereas lizard odour increased these responses significantly: landing responses increased significantly by 22% for males and 10% for females; the increase in trap efficiency was relatively slight (5-10%) and not always significant. For G. f. quanzensis, only pig odour had a consistent effect, doubling the catch of females attracted to the source and increasing the landing response for females by approximately 15%. Dispensing CO(2) at doses equivalent to natural hosts suggested that the response of G. f. fuscipes to lizard odour was not due to CO(2). For G. f. quanzensis, pig odour and CO(2) attracted similar numbers of tsetse, but CO(2) had no material effect on the landing response. The results suggest that identifying kairomones present in lizard odour for G. f. fuscipes and pig odour for G. f. quanzensis may improve the performance of targets for controlling these species. |
format |
Article in Journal/Newspaper |
author |
Maurice O Omolo Ahmed Hassanali Serge Mpiana Johan Esterhuizen Jenny Lindh Mike J Lehane Philippe Solano Jean Baptiste Rayaisse Glyn A Vale Steve J Torr Inaki Tirados |
author_facet |
Maurice O Omolo Ahmed Hassanali Serge Mpiana Johan Esterhuizen Jenny Lindh Mike J Lehane Philippe Solano Jean Baptiste Rayaisse Glyn A Vale Steve J Torr Inaki Tirados |
author_sort |
Maurice O Omolo |
title |
Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. |
title_short |
Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. |
title_full |
Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. |
title_fullStr |
Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. |
title_full_unstemmed |
Prospects for developing odour baits to control Glossina fuscipes spp., the major vector of human African trypanosomiasis. |
title_sort |
prospects for developing odour baits to control glossina fuscipes spp., the major vector of human african trypanosomiasis. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2009 |
url |
https://doi.org/10.1371/journal.pntd.0000435 https://doaj.org/article/a7681d23ef8e491ba11672844ad682d1 |
long_lat |
ENVELOPE(-45.689,-45.689,-60.733,-60.733) |
geographic |
Arctic The Landing |
geographic_facet |
Arctic The Landing |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 3, Iss 5, p e435 (2009) |
op_relation |
http://europepmc.org/articles/PMC2674566?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0000435 https://doaj.org/article/a7681d23ef8e491ba11672844ad682d1 |
op_doi |
https://doi.org/10.1371/journal.pntd.0000435 |
container_title |
PLoS Neglected Tropical Diseases |
container_volume |
3 |
container_issue |
5 |
container_start_page |
e435 |
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