Pathogens of Veterinary Importance Isolated from Mosquitoes and Biting Midges in Israel
In a bluetongue (BT) disease project, light trappings of Culicoides were conducted in 19 localities and 39,000 biting midges were examined. BT virus type 16 was isolated in 1968 at Devora from a pool consisting mainly of Culicoides schultzei gp and C. imicola; BT virus type 4 was isolated in 1969 at Yesodot from a pool of 183 C. imicola; BT virus type 2 was isolated in 1979 at Talmé El’azar from pools consisting of 2462 C. imicola; and BT virus type 6 was isolated 3 times in 1980 at Bet Dagan from pools of 204, 258 and from 143 C. imicola, respectively. In the Akabane project (1976 and 1977) 4632 Culicoides and 1867 mosquitoes from four localities were trapped and examined. An arbovirus which was not Akabane, BT or turkey meningo-encephalitis (TME) was isolated from a pool of 44 engorged Culex pipiens complex trapped in Gan Shemuel. In the Rift Valley fever project, which was conducted in 1978 and 1979 due to the presence of an epidemic in Egypt, 351 mosquitoes of four species and 7098 Culicoides of 14 species were tested and none were found to harbour an arbovirus. Within the TME project more than 12,000 Culicoides and 9000 mosquitoes from 14 localities were tested. Positive isolations of TME were made from an unsorted pool of mosquitoes from Gesher haziw, an unsorted pool of 13 Culicoides from Nahalal, a pool of 223 unidentified Culicoides from Zetan and a pool of 12 engorged Cx pipiens complex from the same locality. Other pathogens which were not identified to species level were also isolated.
KeywordsMosquitoes Culicoides bluetongue Akabane Rift Valley fever turkey meningo-encephalitis spirochaetosis arbovirus
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- Barzilai R., Olshevski U., Feinstein S. and Braverman Y. (1980) R.V.F. monitoring during 1979. Second International Conference on the Impact of Viral Diseases on the Development of African and Middle-East Countries, Nairobi, Kenya, 1–6 December.Google Scholar
- Braverman Y. and Galun R. (1973) The occurrence of Culkoides in Israel with reference to the incidence of bluetongue. Refuah vet. 30, 121–127.Google Scholar
- Dutoit R. M. (1944) The transmission of bluetongue and horse-sickness by Culkoides. Onderstepoort J. vet. Sci. Anim. Ind. 19, 7–16.Google Scholar
- Goldsmit L. (1979) Bluetongue in Israel. Round Table Technical Discussion on Bluetongue, U.S. Department of Agriculture, Baltimore, 10–11 October.Google Scholar
- Imam Z. E. I. and Darwish M. A. (1977) A preliminary report on an epidemic of Rift Valley Fever (R.V.F.) in Egypt. J. Egypt, publ. Hlth. Ass. 52, 417–418.Google Scholar
- Komarov A. and Goldsmit L. (1951) A disease, similar to bluetongue in cattle and sheep in Israel. Refuah vet. 8, 96–100.Google Scholar
- Komarov A. and Kalmar E. (1960) A hitherto undescribed disease — turkey meningo-encephalitis. Vet. Rec. 72, 257–261.Google Scholar
- Markusfeld O. and Mayer E. (1971) An arthrogryposis and hydroencephaly syndrome in calves in Israel, 1969/70-epidemiological and clinical aspects. Refuah vet. 28, 51–61.Google Scholar
- Rubina M., Braverman Y. and Malkinson M. (1975) On the possible transmission of Borrelia anserina (Sakharoff 1891) by mosquitoes. Refuah vet. 32, 16–18.Google Scholar
- Sudia W. D. and Chamberlain R. W. (1962) Battery operated light trap, an improved model. Mosquito News 22, 126–129.Google Scholar