The Anopheles dirus complex: spatial distribution and environmental drivers
Abstract Background The Anopheles dirus complex includes efficient malaria vectors of the Asian forested zone. Studies suggest ecological and biological differences between the species of the complex but variations within species suggest possible environmental influences. Behavioural variation might...
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ftdoajarticles:oai:doaj.org/article:bd8d9f6abf614429a5abfaaaef4006c6 2023-05-15T15:11:03+02:00 The Anopheles dirus complex: spatial distribution and environmental drivers Defourny Pierre Obsomer Valérie Coosemans Marc 2007-03-01T00:00:00Z https://doi.org/10.1186/1475-2875-6-26 https://doaj.org/article/bd8d9f6abf614429a5abfaaaef4006c6 EN eng BMC http://www.malariajournal.com/content/6/1/26 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-6-26 1475-2875 https://doaj.org/article/bd8d9f6abf614429a5abfaaaef4006c6 Malaria Journal, Vol 6, Iss 1, p 26 (2007) Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2007 ftdoajarticles https://doi.org/10.1186/1475-2875-6-26 2022-12-31T03:18:59Z Abstract Background The Anopheles dirus complex includes efficient malaria vectors of the Asian forested zone. Studies suggest ecological and biological differences between the species of the complex but variations within species suggest possible environmental influences. Behavioural variation might determine vector capacity and adaptation to changing environment. It is thus necessary to clarify the species distributions and the influences of environment on behavioural heterogeneity. Methods A literature review highlights variation between species, influences of environmental drivers, and consequences on vector status and control. The localisation of collection sites from the literature and from a recent project (MALVECASIA) produces detailed species distributions maps. These facilitate species identification and analysis of environmental influences. Results The maps give a good overview of species distributions. If species status partly explains behavioural heterogeneity, occurrence and vectorial status, some environmental drivers have at least the same importance. Those include rainfall, temperature, humidity, shade, soil type, water chemistry and moon phase. Most factors are probably constantly favourable in forest. Biological specificities, behaviour and high human-vector contact in the forest can explain the association of this complex with high malaria prevalence, multi-drug resistant Plasmodium falciparum and partial control failure of forest malaria in Southeast Asia. Conclusion Environmental and human factors seem better than species specificities at explaining behavioural heterogeneity. Although forest seems essential for mosquito survival, adaptations to orchards and wells have been recorded. Understanding the relationship between landscape components and mosquito population is a priority in foreseeing the influence of land-cover changes on malaria occurrence and in shaping control strategies for the future. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 6 1 |
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Directory of Open Access Journals: DOAJ Articles |
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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 Defourny Pierre Obsomer Valérie Coosemans Marc The Anopheles dirus complex: spatial distribution and environmental drivers |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background The Anopheles dirus complex includes efficient malaria vectors of the Asian forested zone. Studies suggest ecological and biological differences between the species of the complex but variations within species suggest possible environmental influences. Behavioural variation might determine vector capacity and adaptation to changing environment. It is thus necessary to clarify the species distributions and the influences of environment on behavioural heterogeneity. Methods A literature review highlights variation between species, influences of environmental drivers, and consequences on vector status and control. The localisation of collection sites from the literature and from a recent project (MALVECASIA) produces detailed species distributions maps. These facilitate species identification and analysis of environmental influences. Results The maps give a good overview of species distributions. If species status partly explains behavioural heterogeneity, occurrence and vectorial status, some environmental drivers have at least the same importance. Those include rainfall, temperature, humidity, shade, soil type, water chemistry and moon phase. Most factors are probably constantly favourable in forest. Biological specificities, behaviour and high human-vector contact in the forest can explain the association of this complex with high malaria prevalence, multi-drug resistant Plasmodium falciparum and partial control failure of forest malaria in Southeast Asia. Conclusion Environmental and human factors seem better than species specificities at explaining behavioural heterogeneity. Although forest seems essential for mosquito survival, adaptations to orchards and wells have been recorded. Understanding the relationship between landscape components and mosquito population is a priority in foreseeing the influence of land-cover changes on malaria occurrence and in shaping control strategies for the future. |
format |
Article in Journal/Newspaper |
author |
Defourny Pierre Obsomer Valérie Coosemans Marc |
author_facet |
Defourny Pierre Obsomer Valérie Coosemans Marc |
author_sort |
Defourny Pierre |
title |
The Anopheles dirus complex: spatial distribution and environmental drivers |
title_short |
The Anopheles dirus complex: spatial distribution and environmental drivers |
title_full |
The Anopheles dirus complex: spatial distribution and environmental drivers |
title_fullStr |
The Anopheles dirus complex: spatial distribution and environmental drivers |
title_full_unstemmed |
The Anopheles dirus complex: spatial distribution and environmental drivers |
title_sort |
anopheles dirus complex: spatial distribution and environmental drivers |
publisher |
BMC |
publishDate |
2007 |
url |
https://doi.org/10.1186/1475-2875-6-26 https://doaj.org/article/bd8d9f6abf614429a5abfaaaef4006c6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 6, Iss 1, p 26 (2007) |
op_relation |
http://www.malariajournal.com/content/6/1/26 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-6-26 1475-2875 https://doaj.org/article/bd8d9f6abf614429a5abfaaaef4006c6 |
op_doi |
https://doi.org/10.1186/1475-2875-6-26 |
container_title |
Malaria Journal |
container_volume |
6 |
container_issue |
1 |
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1766341967287943168 |