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host preferences and circadian rhythm of culicoides (diptera: ceratopogonidae), vectors of african horse sickness and bluetongue viruses in senegal.african horse sickness- and bluetongue virus are orbiviruses transmitted by culicoides biting midges (diptera: ceratopogonidae) to horses and to ruminants, respectively. since the last epizootic outbreak of african horse sickness in 2007 in senegal, extensive investigations have been undertaken to improve our knowledge on culicoides species involved locally in the transmission of the virus. the purpose of this study was to compare and quantify the host preferences of potential vectors of these o ...201526099680
culicoides spp. (diptera: ceratopogonidae) as vectors of bluetongue virus in south africa - a review.the aim of this paper is to consolidate vector competence studies on culicoides midges (diptera: ceratopogonidae) as vectors of bluetongue virus (btv) done over a period 25 years at the arc‑onderstepoort veterinary institute in south africa. in 1944, it was demonstrated for the first time in south africa that culicoides midges transmit btv. in 1991, field‑collected culicoides imicola were fed on blood containing btv‑3 or ‑6 and the infection rates were established as being 31% and 24%, respectiv ...201626741247
Recovery rates of bluetongue virus serotypes 1, 2, 4 and 8 Spanish strains from orally infected Culicoides imicola in South Africa.Bluetongue (BT) is an infectious disease of ruminants that has spread northwards in Europe during the last decade. The aetiological agent of the disease is an arbovirus [bluetongue virus (BTV)] that belongs to the genus Orbivirus (family Reoviridae). The virus is transmitted by certain species of biting midge within the genus Culicoides (Diptera: Ceratopogonidae). Information on the vector status of the Culicoides species in a specific area will be essential to predict the risk for BTV incursion ...201122077485
vector competence of culicoides bolitinos and c. imicola for south african bluetongue virus serotypes 1, 3 and 4.the susceptibility of field-collected culicoides bolitinos to infection by oral ingestion of bluetongue virus serotypes 1, 3 and 4 (blu 1, 3 and 4) was compared with that of field-collected c. imicola and laboratory reared c. variipennis sonorensis. the concentration of the virus per millilitre of bloodmeal was 10(5.0) and 10(6.0)tcid50 for blu 4 and 10(7.2)tcid50 for blu 1 and 3. of 4927 c. bolitinos and 9585 c. imicola fed, 386 and 287 individual midges survived 10 days extrinsic incubation, r ...19989824821
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