Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal
Abstract Background Vector-borne diseases are among the leading causes of morbidity and mortality in humans and animals. In the Afrotropical region, some are transmitted by Culicoides, such as Akabane, bluetongue, epizootic haemorrhagic fever and African horse sickness viruses. Bluetongue virus infe...
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| Format: | Article |
| Language: | English |
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BMC
2019-11-01
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| Series: | BMC Ecology |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12898-019-0261-9 |
| _version_ | 1819130604343525376 |
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| author | Mamadou Ciss Biram Biteye Assane Gueye Fall Moussa Fall Marie Cicille Ba Gahn Louise Leroux Andrea Apolloni |
| author_facet | Mamadou Ciss Biram Biteye Assane Gueye Fall Moussa Fall Marie Cicille Ba Gahn Louise Leroux Andrea Apolloni |
| author_sort | Mamadou Ciss |
| collection | DOAJ |
| description | Abstract Background Vector-borne diseases are among the leading causes of morbidity and mortality in humans and animals. In the Afrotropical region, some are transmitted by Culicoides, such as Akabane, bluetongue, epizootic haemorrhagic fever and African horse sickness viruses. Bluetongue virus infection has an enormous impact on ruminant production, due to its high morbidity and mortality rates. Methods A nationwide Culicoides trapping campaign was organized at the end of the 2012 rainy season in Senegal. A Maximum Entropy approach (MaxEnt), Boosted Regression Tree (BRT) method and Ecological Niche Factor Analysis (ENFA) were used to develop a predictive spatial model for the distribution of Culicoides, using bio-climatic variables, livestock densities and altitude. Results The altitude, maximum temperature of the warmest month, precipitation of the warmest quarter, mean temperature of the wettest quarter, temperature seasonality, precipitation of the wettest quarter and livestock density were among the most important factors to predict suitable habitats of Culicoides. Culicoides occurrences were, in most of the cases, positively correlated to precipitation variables and livestock densities; and negatively correlated to the altitude and temperature indices. The Niayes area and the Groundnut basin were the most suitable habitats predicted. Conclusion We present ecological niche models for different Culicoides species, namely C. imicola, C. oxystoma, C. enderleini and C. miombo, potential vectors of bluetongue virus, on a nationwide scale in Senegal. Through our modelling approach, we were able to determine the effect of bioclimatic variables on Culicoides habitats and were able to generate maps for the occurrence of Culicoides species. This information will be helpful in developing risk maps for disease outbreaks. |
| first_indexed | 2024-12-22T09:02:15Z |
| format | Article |
| id | doaj.art-e38a8d9128ee4d948ab62b0356c1c98e |
| institution | Directory Open Access Journal |
| issn | 1472-6785 |
| language | English |
| last_indexed | 2024-12-22T09:02:15Z |
| publishDate | 2019-11-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ecology |
| spelling | doaj.art-e38a8d9128ee4d948ab62b0356c1c98e2022-12-21T18:31:41ZengBMCBMC Ecology1472-67852019-11-0119111210.1186/s12898-019-0261-9Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in SenegalMamadou Ciss0Biram Biteye1Assane Gueye Fall2Moussa Fall3Marie Cicille Ba Gahn4Louise Leroux5Andrea Apolloni6Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches VétérinairesInstitut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches VétérinairesInstitut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches VétérinairesInstitut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches VétérinairesInstitut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches VétérinairesCIRAD, UPR AIDAInstitut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches VétérinairesAbstract Background Vector-borne diseases are among the leading causes of morbidity and mortality in humans and animals. In the Afrotropical region, some are transmitted by Culicoides, such as Akabane, bluetongue, epizootic haemorrhagic fever and African horse sickness viruses. Bluetongue virus infection has an enormous impact on ruminant production, due to its high morbidity and mortality rates. Methods A nationwide Culicoides trapping campaign was organized at the end of the 2012 rainy season in Senegal. A Maximum Entropy approach (MaxEnt), Boosted Regression Tree (BRT) method and Ecological Niche Factor Analysis (ENFA) were used to develop a predictive spatial model for the distribution of Culicoides, using bio-climatic variables, livestock densities and altitude. Results The altitude, maximum temperature of the warmest month, precipitation of the warmest quarter, mean temperature of the wettest quarter, temperature seasonality, precipitation of the wettest quarter and livestock density were among the most important factors to predict suitable habitats of Culicoides. Culicoides occurrences were, in most of the cases, positively correlated to precipitation variables and livestock densities; and negatively correlated to the altitude and temperature indices. The Niayes area and the Groundnut basin were the most suitable habitats predicted. Conclusion We present ecological niche models for different Culicoides species, namely C. imicola, C. oxystoma, C. enderleini and C. miombo, potential vectors of bluetongue virus, on a nationwide scale in Senegal. Through our modelling approach, we were able to determine the effect of bioclimatic variables on Culicoides habitats and were able to generate maps for the occurrence of Culicoides species. This information will be helpful in developing risk maps for disease outbreaks.http://link.springer.com/article/10.1186/s12898-019-0261-9Vector-borne diseasesAfrotropical regionCulicoidesBluetongueEcological modellingMaxEnt |
| spellingShingle | Mamadou Ciss Biram Biteye Assane Gueye Fall Moussa Fall Marie Cicille Ba Gahn Louise Leroux Andrea Apolloni Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal BMC Ecology Vector-borne diseases Afrotropical region Culicoides Bluetongue Ecological modelling MaxEnt |
| title | Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal |
| title_full | Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal |
| title_fullStr | Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal |
| title_full_unstemmed | Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal |
| title_short | Ecological niche modelling to estimate the distribution of Culicoides, potential vectors of bluetongue virus in Senegal |
| title_sort | ecological niche modelling to estimate the distribution of culicoides potential vectors of bluetongue virus in senegal |
| topic | Vector-borne diseases Afrotropical region Culicoides Bluetongue Ecological modelling MaxEnt |
| url | http://link.springer.com/article/10.1186/s12898-019-0261-9 |
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