Hostname: page-component-745bb68f8f-d8cs5 Total loading time: 0 Render date: 2025-01-10T17:12:29.542Z Has data issue: false hasContentIssue false
  • English
  • Français

Isolation of bluetongue and related viruses from Culicoides spp. in the Sudan

Published online by Cambridge University Press:  19 October 2009

P. S. Mellor ,
R. Osborne  and
D. M. Jennings
P. S. Mellor
Affiliation:
Animal Virus Research Institute, Pirbright, Surrey GU24 0NF
R. Osborne
Affiliation:
Animal Virus Research Institute, Pirbright, Surrey GU24 0NF
D. M. Jennings
Affiliation:
Animal Virus Research Institute, Pirbright, Surrey GU24 0NF
Rights & Permissions [Opens in a new window]

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Infection of domestic ruminants with bluetongue virus (BTV) is widespread in the Sudan but there are no records of vector species of Culicoides in that country. Therefore, light-trap collections of Culicoides for virus isolation procedures were made in the Khartoum and Um Benein areas of the Sudan during September–October 1982.

Two virus isolates were made from pools of unengorged, female Culicoides. An isolate from a pool of C. kingi (schultzei gp) is a member of the Epizootic Haemorrhagic Disease (EHD) serogroup. The other isolate from a pool of C. imicola, a known BTV vector in other parts of Africa, is type-5 BTV.

In laboratory experiments, the North American vector of BTV, C. variipennis, supported replication of both Sudanese isolates to a high titre and transmission occurred after 10 days' incubation.

This paper records the first isolation in the Sudan of arboviruses from Culicoides, with the identification of a BTV serotype and the presence of a member of the EHD (genus orbivirus, family Reoviridae) serogroup.

Type
Research Article
Information
Journal of Hygiene , Volume 93 , Issue 3 , December 1984 , pp. 621 - 628
Copyright
Copyright © Cambridge University Press 1984

References

Boorman, J. P. T. & Mellor, P. (1982). Notes on Culicoides (Diptera, Ceratopogonidne) from the Sudan in relation to the epidemiology of bluetongue virus disease. Revue d'Elevage et de Médecine Vétérinaire des Pays Tropicaux 35, 173–178.Google Scholar
Eisa, M., Karrar, A. E. & Abu Elrahim, A. H. (1979). Incidence of bluetongue virus precipitating antibodies in sera of some domestic animals in the Sudan. Journal of Hygiene 83, 530–545.CrossRefGoogle ScholarPubMed
Eisa, M., Osman, O. M., Karrar, A. E. & Abdel Rahim, A. A. (1980). An outbreak of bluetongue in sheep in the Sudan. Veterinary Record 106, 481–482.CrossRefGoogle ScholarPubMed
El Sinnary, K. & Hussein, H. S. (1980). Culicoides kingi Austen: a vector of Onchocerca gutturosa (Newman 1910) in the Sudan. Annals of Tropical Medicine & Parasitology 74, 655–656.CrossRefGoogle Scholar
Finney, D. J. (1964). Statistical Method in Biological Assay, 2nd ed.London: Griffin.Google Scholar
Herniman, K. A. J., Boorman, J. P. T. & Taylor, W. P. (1983). Bluetongue virus in a Nigerian dairy cattle herd. 1. Serological studies and correlation of virus activity to vector population. Journal of Hygiene 90, 177–193.CrossRefGoogle Scholar
Herniman, K. A. J., Gumm, I. D., Owen, L., Taylor, W. P. & Sellers, R. F. (1980). Distribution of bluetongue virus antibodies in some countries of the Eastern Hemisphere. Bulletin de I'Office International des Epizootics 92, 581–586.Google Scholar
Jeggo, M. H., Gumm, I. D. & Taylor, W. P. (1983). Clinical and serological response of sheep to serial challenge with different bluetongue virus types. Research in Veterinary Science 34, 205–211.CrossRefGoogle ScholarPubMed
Lake, J. R. (1974). Studies on the genetic and biological properties of temperature-sensitive mutants of foot-and-mouth disease virus. Ph.D. Thesis, University of London.Google Scholar
Mellor, P. S., Boorman, J. & Loke, R. (1974). The multiplication of main drain virus in two species of Culicoides (Diptera, Ceratopogonidae). Archiv für die gesamte Virusforschung 46, 105–110.CrossRefGoogle ScholarPubMed
Mellor, P. S. & Boorman, J. (1980). Multiplication of bluetongue virus in Culicoides nubeculosus (Meigen) simultaneously infected with the virus and the microfilariae of Onchocera cervicalis (Railliet & Henry). Annals of Tropical Medicine & Parasitology 74, 463–469.CrossRefGoogle Scholar
Service, M. W. (1970). A battery-operated light trap for sampling mosquito populations. Bulletin of the World Health Organization 43, 635–641.Google ScholarPubMed