Institute of Tropical Medicine Antwerp
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An update on distribution models for Rhipicephalus microplus in West Africa

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Show simple item record De Clercq, E. M. en_US Estrada-Peña, A. en_US Adehan, S. en_US Madder, M. en_US Vanwambeke, S. O. en_US 2014-09-25T13:39:02Z 2014-09-25T13:39:02Z 2013 en_US
dc.identifier.issn 1827-1987 en_US
dc.identifier.other ITG-B4A; DBM; U-VENTO; JIF; FTA; Abstract; UPD56 en_US
dc.description.abstract The cattle tick, Rhipicephalus microplus, which reached the West African region approximately 8 years ago, has established viable populations in Cote d'Ivoire and Benin and spread rapidly from the assumed points of introduction. However, existing maps of its distribution range do not agree on the areas at risk, most probably due to suboptimal modelling approaches. Therefore, we undertook a re-investigation of the potential distribution range based on a high-quality dataset from West Africa that includes information on 104 farms located all over Benin. Focussing on climate suitability and applying advanced modelling, a subset of representative and uncorrelated climate variables was selected and fed into Maxent software to obtain an estimate of climate suitability for West Africa. The resulting map was validated using an independent dataset of 13 farms along the apparent distribution edge. The entire southern part of West Africa (covering southern Nigeria, Benin, Togo and Ghana) features high climate suitability for R. microplus. All of Cote d'Ivoire is inside the distribution range of this tick and the southern rim of Burkina Faso is expected to be suitable for the establishment of R. microplus populations. The validation of the distribution, dated one year after the initial field visit, confirmed the predicted distribution range, although a small number of individuals of R. microplus were found north of the predicted limit. These low numbers might indicate that the climate is not suitable for the establishment of a viable tick population. An alternative explanation is the recent introduction by nomadic cattle herds passing through this location. In this region of the world, it is quite common for cattle owners to lead their livestock over distances of more than 500 km in search of food and water. en_US
dc.language English en_US
dc.subject Entomology en_US
dc.subject Ticks en_US
dc.subject Rhipicephalus microplus en_US
dc.subject Cattle en_US
dc.subject Distribution en_US
dc.subject Species en_US
dc.subject Climate en_US
dc.subject Temperature en_US
dc.subject Rainfall en_US
dc.subject Spatial analysis en_US
dc.subject Mapping en_US
dc.subject Prediction en_US
dc.subject Survival en_US
dc.subject Benin en_US
dc.subject Africa, West en_US
dc.title An update on distribution models for Rhipicephalus microplus in West Africa en_US
dc.type Article-E en_US
dc.citation.issue 1 en_US
dc.citation.jtitle Geospatial Health en_US
dc.citation.volume 8 en_US
dc.citation.pages 301-308 en_US
dc.identifier.pmid en_US
dc.citation.jabbreviation Geospat Health en_US

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