Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae
Abstract Background Many studies have suggested that variability in the attractiveness of humans to host-seeking mosquitoes is caused by differences in the make-up of body emanations, and olfactory signals in particular. Most investigations have either been laboratory-based, utilising odour obtained...
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ftdoajarticles:oai:doaj.org/article:e18bd414fc2f441bab432ff6561869f5 2023-05-15T15:16:10+02:00 Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae Takken Willem Mukabana Wolfgang R Coe Richard Knols Bart GJ 2002-12-01T00:00:00Z https://doi.org/10.1186/1475-2875-1-17 https://doaj.org/article/e18bd414fc2f441bab432ff6561869f5 EN eng BMC http://www.malariajournal.com/content/1/1/17 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-1-17 1475-2875 https://doaj.org/article/e18bd414fc2f441bab432ff6561869f5 Malaria Journal, Vol 1, Iss 1, p 17 (2002) Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2002 ftdoajarticles https://doi.org/10.1186/1475-2875-1-17 2022-12-31T01:10:03Z Abstract Background Many studies have suggested that variability in the attractiveness of humans to host-seeking mosquitoes is caused by differences in the make-up of body emanations, and olfactory signals in particular. Most investigations have either been laboratory-based, utilising odour obtained from sections of the body, or have been done in the field with sampling methods that do not discriminate between visual, physical and chemical cues of the host. Accordingly, evidence for differential attractiveness based on body emanations remains sparse in spite of the far-reaching epidemiological implications of this phenomenon. Methods A new three-port olfactometer that accommodates complete human beings as sources of host-seeking stimuli was used to study behavioural responses of Anopheles gambiae Giles sensu stricto (hereafter An. gambiae ) under semi-field conditions in western Kenya. Differential attractiveness of nine male Kenyans was assessed by simultaneously exposing the mosquitoes to (a mixture of) total body emanations of 3 people occupying separate tents. Controls (empty tents) were included and the effect of residual odours following tent occupation was also examined. Results Trap catches increased significantly (P < 0.001) when a tent was occupied. Based on 'competition' experiments, the nine persons were classified into least, medium and most attractive groups. There was no significant interaction between person and trap (P = 0.302) or person and test period (P = 0.223). Presence (P < 0.001) or absence (P = 0.949) of significant differences in the number of mosquitoes caught per trap when tents were simultaneously occupied by one person in each or left empty, respectively, demonstrated that residual odours following tent occupation did not affect behavioural responses of the mosquitoes. Conclusion We provide evidence that in the vicinity of humans, when exposed to a blend of physical and olfactory signals from more than one host, An. gambiae can effectively and consistently express ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Giles ENVELOPE(-137.617,-137.617,-75.150,-75.150) Malaria Journal 1 1 17 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
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Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Takken Willem Mukabana Wolfgang R Coe Richard Knols Bart GJ Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Many studies have suggested that variability in the attractiveness of humans to host-seeking mosquitoes is caused by differences in the make-up of body emanations, and olfactory signals in particular. Most investigations have either been laboratory-based, utilising odour obtained from sections of the body, or have been done in the field with sampling methods that do not discriminate between visual, physical and chemical cues of the host. Accordingly, evidence for differential attractiveness based on body emanations remains sparse in spite of the far-reaching epidemiological implications of this phenomenon. Methods A new three-port olfactometer that accommodates complete human beings as sources of host-seeking stimuli was used to study behavioural responses of Anopheles gambiae Giles sensu stricto (hereafter An. gambiae ) under semi-field conditions in western Kenya. Differential attractiveness of nine male Kenyans was assessed by simultaneously exposing the mosquitoes to (a mixture of) total body emanations of 3 people occupying separate tents. Controls (empty tents) were included and the effect of residual odours following tent occupation was also examined. Results Trap catches increased significantly (P < 0.001) when a tent was occupied. Based on 'competition' experiments, the nine persons were classified into least, medium and most attractive groups. There was no significant interaction between person and trap (P = 0.302) or person and test period (P = 0.223). Presence (P < 0.001) or absence (P = 0.949) of significant differences in the number of mosquitoes caught per trap when tents were simultaneously occupied by one person in each or left empty, respectively, demonstrated that residual odours following tent occupation did not affect behavioural responses of the mosquitoes. Conclusion We provide evidence that in the vicinity of humans, when exposed to a blend of physical and olfactory signals from more than one host, An. gambiae can effectively and consistently express ... |
format |
Article in Journal/Newspaper |
author |
Takken Willem Mukabana Wolfgang R Coe Richard Knols Bart GJ |
author_facet |
Takken Willem Mukabana Wolfgang R Coe Richard Knols Bart GJ |
author_sort |
Takken Willem |
title |
Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae |
title_short |
Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae |
title_full |
Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae |
title_fullStr |
Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae |
title_full_unstemmed |
Host-specific cues cause differential attractiveness of Kenyan men to the African malaria vector Anopheles gambiae |
title_sort |
host-specific cues cause differential attractiveness of kenyan men to the african malaria vector anopheles gambiae |
publisher |
BMC |
publishDate |
2002 |
url |
https://doi.org/10.1186/1475-2875-1-17 https://doaj.org/article/e18bd414fc2f441bab432ff6561869f5 |
long_lat |
ENVELOPE(-137.617,-137.617,-75.150,-75.150) |
geographic |
Arctic Giles |
geographic_facet |
Arctic Giles |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 1, Iss 1, p 17 (2002) |
op_relation |
http://www.malariajournal.com/content/1/1/17 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-1-17 1475-2875 https://doaj.org/article/e18bd414fc2f441bab432ff6561869f5 |
op_doi |
https://doi.org/10.1186/1475-2875-1-17 |
container_title |
Malaria Journal |
container_volume |
1 |
container_issue |
1 |
container_start_page |
17 |
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1766346466586001408 |