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Although associations between malaria vector breeding sites and topography are well recognized, practical models that predict breeding sites from topographic information are lacking. We used topographic variables derived from remotely sensed Digital Elevation Models (DEMs) to model the breeding sites of malaria vectors. We further compared the predictive strength of two different DEMs and evaluated the predictability of various habitat types inhabited by Anopheles larvae.\nMethods\nUsing GIS techniques, topographic variables were extracted from two DEMs: 1) Shuttle Radar Topography Mission 3 (SRTM3, 90-m resolution) and 2) the Advanced Spaceborne Thermal Emission Reflection Radiometer Global DEM (ASTER, 30-m resolution). We used data on breeding sites from an extensive field survey conducted on an island in western Kenya in 2006. Topographic variables were extracted for 826 breeding sites and for 4520 negative points that were randomly assigned. 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Topographic models for predicting malaria vector breeding habitats: potential tools for vector control managers
http://hdl.handle.net/10069/32610
http://hdl.handle.net/10069/32610fccb15cf-98f9-43b7-89f1-cd80d5d5507b
名前 / ファイル | ライセンス | アクション |
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ParVec6_14.pdf (1.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2013-07-04 | |||||
タイトル | ||||||
タイトル | Topographic models for predicting malaria vector breeding habitats: potential tools for vector control managers | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Malaria | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Anopheles | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Breeding habitats | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Prediction | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Topographic models | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Kenya | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Africa | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Nmor, Jephtha C
× Nmor, Jephtha C× Sunahara, Toshihiko× Goto, Kensuke× Futami, Kyoko× Sonye, George× Akweywa, Peter× Dida, Gabriel× Minakawa, Noboru |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Background Identification of malaria vector breeding sites can enhance control activities. Although associations between malaria vector breeding sites and topography are well recognized, practical models that predict breeding sites from topographic information are lacking. We used topographic variables derived from remotely sensed Digital Elevation Models (DEMs) to model the breeding sites of malaria vectors. We further compared the predictive strength of two different DEMs and evaluated the predictability of various habitat types inhabited by Anopheles larvae. Methods Using GIS techniques, topographic variables were extracted from two DEMs: 1) Shuttle Radar Topography Mission 3 (SRTM3, 90-m resolution) and 2) the Advanced Spaceborne Thermal Emission Reflection Radiometer Global DEM (ASTER, 30-m resolution). We used data on breeding sites from an extensive field survey conducted on an island in western Kenya in 2006. Topographic variables were extracted for 826 breeding sites and for 4520 negative points that were randomly assigned. Logistic regression modelling was applied to characterize topographic features of the malaria vector breeding sites and predict their locations. Model accuracy was evaluated using the area under the receiver operating characteristics curve (AUC). Results All topographic variables derived from both DEMs were significantly correlated with breeding habitats except for the aspect of SRTM. The magnitude and direction of correlation for each variable were similar in the two DEMs. Multivariate models for SRTM and ASTER showed similar levels of fit indicated by Akaike information criterion (3959.3 and 3972.7, respectively), though the former was slightly better than the latter. The accuracy of prediction indicated by AUC was also similar in SRTM (0.758) and ASTER (0.755) in the training site. In the testing site, both SRTM and ASTER models showed higher AUC in the testing sites than in the training site (0.829 and 0.799, respectively). The predictability of habitat types varied. Drains, foot-prints, puddles and swamp habitat types were most predictable. Conclusions Both SRTM and ASTER models had similar predictive potentials, which were sufficiently accurate to predict vector habitats. The free availability of these DEMs suggests that topographic predictive models could be widely used by vector control managers in Africa to complement malaria control strategies. |
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書誌情報 |
Parasites & Vectors 巻 6, 号 1, p. 14, 発行日 2013-01-16 |
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出版者 | ||||||
出版者 | BioMed Central Ltd. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 17563305 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1186/1756-3305-6-14 | |||||
権利 | ||||||
権利情報 | © 2013 Nmor et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関係URI | ||||||
関連名称 | http://hdl.handle.net/10069/32739 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Parasites & Vectors, 6(1), 14; 2013 |