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Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia

The increasing threat of vector-borne diseases (VBDs) represents a great challenge to those who manage public and animal health. Determining the spatial distribution of arthropod vector species is an essential step in studying the risk of transmission of a vector-borne pathogen (VBP) and in estimati...

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Autores principales: Thameur, Ben H., Soufiène, Sghaier, Haj Ammar, Heni, Hammami, Salah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: AOSIS 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8424768/
https://www.ncbi.nlm.nih.gov/pubmed/34476951
http://dx.doi.org/10.4102/ojvr.v88i1.1861
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author Thameur, Ben H.
Soufiène, Sghaier
Haj Ammar, Heni
Hammami, Salah
author_facet Thameur, Ben H.
Soufiène, Sghaier
Haj Ammar, Heni
Hammami, Salah
author_sort Thameur, Ben H.
collection PubMed
description The increasing threat of vector-borne diseases (VBDs) represents a great challenge to those who manage public and animal health. Determining the spatial distribution of arthropod vector species is an essential step in studying the risk of transmission of a vector-borne pathogen (VBP) and in estimating risk levels of VBD. Risk maps allow better targeting surveillance and help in designing control measures. We aimed to study the geographical distribution of Culicoides imicola, the main competent vector of Bluetongue virus (BTV) in sheep in Tunisia. Fifty-three records covering the whole distribution range of C.imicola in Tunisia were obtained during a 2-year field entomological survey (August 2017 – January 2018 and August 2018 – January 2019). The ecological niche of C. imicola is described using ecological-niche factor analysis (ENFA) and Mahalanobis distances factor analysis (MADIFA). An environmental suitability map (ESM) was developed by MaxEnt software to map the optimal habitat under the current climate background. The MaxEnt model was highly accurate with a statistically significant area under curve (AUC) value of 0.941. The location of the potential distribution of C. imicola is predicted in specified regions of Tunisia. Our findings can be applied in various ways such as surveillance and control program of BTV in Tunisia.
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spelling pubmed-84247682021-09-13 Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia Thameur, Ben H. Soufiène, Sghaier Haj Ammar, Heni Hammami, Salah Onderstepoort J Vet Res Original Research The increasing threat of vector-borne diseases (VBDs) represents a great challenge to those who manage public and animal health. Determining the spatial distribution of arthropod vector species is an essential step in studying the risk of transmission of a vector-borne pathogen (VBP) and in estimating risk levels of VBD. Risk maps allow better targeting surveillance and help in designing control measures. We aimed to study the geographical distribution of Culicoides imicola, the main competent vector of Bluetongue virus (BTV) in sheep in Tunisia. Fifty-three records covering the whole distribution range of C.imicola in Tunisia were obtained during a 2-year field entomological survey (August 2017 – January 2018 and August 2018 – January 2019). The ecological niche of C. imicola is described using ecological-niche factor analysis (ENFA) and Mahalanobis distances factor analysis (MADIFA). An environmental suitability map (ESM) was developed by MaxEnt software to map the optimal habitat under the current climate background. The MaxEnt model was highly accurate with a statistically significant area under curve (AUC) value of 0.941. The location of the potential distribution of C. imicola is predicted in specified regions of Tunisia. Our findings can be applied in various ways such as surveillance and control program of BTV in Tunisia. AOSIS 2021-08-16 /pmc/articles/PMC8424768/ /pubmed/34476951 http://dx.doi.org/10.4102/ojvr.v88i1.1861 Text en © 2021. The Authors https://creativecommons.org/licenses/by/4.0/Licensee: AOSIS. This work is licensed under the Creative Commons Attribution License.
spellingShingle Original Research
Thameur, Ben H.
Soufiène, Sghaier
Haj Ammar, Heni
Hammami, Salah
Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia
title Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia
title_full Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia
title_fullStr Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia
title_full_unstemmed Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia
title_short Spatial distribution and habitat selection of culicoides imicola: The potential vector of bluetongue virus in Tunisia
title_sort spatial distribution and habitat selection of culicoides imicola: the potential vector of bluetongue virus in tunisia
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8424768/
https://www.ncbi.nlm.nih.gov/pubmed/34476951
http://dx.doi.org/10.4102/ojvr.v88i1.1861
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