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Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda
Tsetse flies transmit trypanosomes, the causative agent of human and animal African trypanosomiasis. The tsetse vector is extensively distributed across sub-Saharan Africa. Trypanosomiasis maintenance is determined by the interrelationship of three elements: vertebrate host, parasite and the vector...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4398481/ https://www.ncbi.nlm.nih.gov/pubmed/25875201 http://dx.doi.org/10.1371/journal.pntd.0003705 |
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author | Albert, Mugenyi Wardrop, Nicola A Atkinson, Peter M Torr, Steve J Welburn, Susan C |
author_facet | Albert, Mugenyi Wardrop, Nicola A Atkinson, Peter M Torr, Steve J Welburn, Susan C |
author_sort | Albert, Mugenyi |
collection | PubMed |
description | Tsetse flies transmit trypanosomes, the causative agent of human and animal African trypanosomiasis. The tsetse vector is extensively distributed across sub-Saharan Africa. Trypanosomiasis maintenance is determined by the interrelationship of three elements: vertebrate host, parasite and the vector responsible for transmission. Mapping the distribution and abundance of tsetse flies assists in predicting trypanosomiasis distributions and developing rational strategies for disease and vector control. Given scarce resources to carry out regular full scale field tsetse surveys to up-date existing tsetse maps, there is a need to devise inexpensive means for regularly obtaining dependable area-wide tsetse data to guide control activities. In this study we used spatial epidemiological modelling techniques (logistic regression) involving 5000 field-based tsetse-data (G. f. fuscipes) points over an area of 40,000 km(2), with satellite-derived environmental surrogates composed of precipitation, temperature, land cover, normalised difference vegetation index (NDVI) and elevation at the sub-national level. We used these extensive tsetse data to analyse the relationships between presence of tsetse (G. f. fuscipes) and environmental variables. The strength of the results was enhanced through the application of a spatial autologistic regression model (SARM). Using the SARM we showed that the probability of tsetse presence increased with proportion of forest cover and riverine vegetation. The key outputs are a predictive tsetse distribution map for the Lake Victoria basin of Uganda and an improved understanding of the association between tsetse presence and environmental variables. The predicted spatial distribution of tsetse in the Lake Victoria basin of Uganda will provide significant new information to assist with the spatial targeting of tsetse and trypanosomiasis control. |
format | Online Article Text |
id | pubmed-4398481 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-43984812015-04-21 Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda Albert, Mugenyi Wardrop, Nicola A Atkinson, Peter M Torr, Steve J Welburn, Susan C PLoS Negl Trop Dis Research Article Tsetse flies transmit trypanosomes, the causative agent of human and animal African trypanosomiasis. The tsetse vector is extensively distributed across sub-Saharan Africa. Trypanosomiasis maintenance is determined by the interrelationship of three elements: vertebrate host, parasite and the vector responsible for transmission. Mapping the distribution and abundance of tsetse flies assists in predicting trypanosomiasis distributions and developing rational strategies for disease and vector control. Given scarce resources to carry out regular full scale field tsetse surveys to up-date existing tsetse maps, there is a need to devise inexpensive means for regularly obtaining dependable area-wide tsetse data to guide control activities. In this study we used spatial epidemiological modelling techniques (logistic regression) involving 5000 field-based tsetse-data (G. f. fuscipes) points over an area of 40,000 km(2), with satellite-derived environmental surrogates composed of precipitation, temperature, land cover, normalised difference vegetation index (NDVI) and elevation at the sub-national level. We used these extensive tsetse data to analyse the relationships between presence of tsetse (G. f. fuscipes) and environmental variables. The strength of the results was enhanced through the application of a spatial autologistic regression model (SARM). Using the SARM we showed that the probability of tsetse presence increased with proportion of forest cover and riverine vegetation. The key outputs are a predictive tsetse distribution map for the Lake Victoria basin of Uganda and an improved understanding of the association between tsetse presence and environmental variables. The predicted spatial distribution of tsetse in the Lake Victoria basin of Uganda will provide significant new information to assist with the spatial targeting of tsetse and trypanosomiasis control. Public Library of Science 2015-04-15 /pmc/articles/PMC4398481/ /pubmed/25875201 http://dx.doi.org/10.1371/journal.pntd.0003705 Text en © 2015 Albert et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Albert, Mugenyi Wardrop, Nicola A Atkinson, Peter M Torr, Steve J Welburn, Susan C Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda |
title | Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda |
title_full | Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda |
title_fullStr | Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda |
title_full_unstemmed | Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda |
title_short | Tsetse Fly (G.f. fuscipes) Distribution in the Lake Victoria Basin of Uganda |
title_sort | tsetse fly (g.f. fuscipes) distribution in the lake victoria basin of uganda |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4398481/ https://www.ncbi.nlm.nih.gov/pubmed/25875201 http://dx.doi.org/10.1371/journal.pntd.0003705 |
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