Climate change and the genus Rhipicephalus (Acari : Ixodidae) in Africa

dc.contributor.authorOlwoch, Jane Mukarugwiza
dc.contributor.authorVan Jaarsveld, A.S.
dc.contributor.authorScholtz, Clarke H.
dc.contributor.authorHorak, Ivan Gerard
dc.contributor.emailjane.olwoch@up.ac.zaen
dc.date.accessioned2008-05-08T10:19:42Z
dc.date.available2008-05-08T10:19:42Z
dc.date.issued2007-03
dc.descriptionDue to large file sizes, these files may take a while to downloaden
dc.description.abstractThe suitability of present and future climates for 30 Rhipicephalus species in Africa are predicted using a simple climate envelope model as well as a Division of Atmospheric Research Limited-Area Model (DARLAM). DARLAM's predictions are compared with the mean outcome from two global circulation models. East Africa and South Africa are considered the most vulnerable regions on the continent to climate-induced changes in tick distributions and tick-borne diseases. More than 50% of the species examined show potential range expansion and more than 70% of this range expansion is found in economically important tick species. More than 20% of the species experienced range shifts of between 50 and 100%. There is also an increase in tick species richness in the south-western regions of the sub-continent. Actual range alterations due to climate change may be even greater since factors like land degradation and human population increase have not been included in this modelling process. However, these predictions are also subject to the effect that climate change may have on the hosts of the ticks, particularly those that favour a restricted range of hosts. Where possible, the anticipated biological implications of the predicted changes are explored.en
dc.description.urihttp://upetd.up.ac.za/thesis/available/etd-06082007-090301/en
dc.format.extent776278 bytes
dc.format.extent677502 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.identifier.citationOlwoch, JM, Van Jaarsveld, AS, Scholtz, CH & Horak IG 2007, 'Climate change and the genus Rhipicephalus (Acari : Ixodidae) in Africa', Onderstepoort Journal of Veterinary Research, vol. 74, no. 1, pp. 45-72. [http://www.journals.co.za/ej/ejour_opvet.html]en
dc.identifier.issn0030-2465
dc.identifier.other7102989086
dc.identifier.other
dc.identifier.urihttp://hdl.handle.net/2263/5193
dc.language.isoenen
dc.publisherAgricultural Research Council, ARC-OVI and the University of Pretoriaen
dc.rightsAgricultural Research Council, ARC-OVI and the University of Pretoriaen
dc.subjectTick-borne diseasesen
dc.subjectSub-Saharan Africaen
dc.subjectRhipicephalus speciesen
dc.subjectClimate changeen
dc.subject.lcshRhipicephalus -- South Africaen
dc.subject.lcshVeterinary parasitologyen
dc.subject.lcshTick-borne diseases in animals -- South Africaen
dc.subject.lcshTicks -- Ecologyen
dc.titleClimate change and the genus Rhipicephalus (Acari : Ixodidae) in Africaen
dc.typeArticleen

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