Tropical Animal Health and Production

, Volume 14, Issue 3, pp 127–140 | Cite as

Causal agents of bovine theileriosis in southern Africa

  • G. Uilenberg
  • N. M. Perié
  • J. A. Lawrence
  • A. J. de Vos
  • R. W. Paling
  • A. A. M. Spanjer


One pathogenic and 4 mild bovineTheileria strains from southern Africa, all transmitted byRhipicephalus appendiculatus, were compared amongst themselves as well as to bovine and buffalo strains of theT. parva complex from eastern and southern Africa and to bovine strains ofT. taurotragi from Tanzania considered to be derived from eland antelope. Criteria used were parasitological, clinical, serological and cross-immunity characters.

The mild strains are similar to bovineT. taurotragi. Serological evidence suggested thatT. taurotragi is also infective to sheep. The pathogenic strain belongs to theT. parva complex; the latter consists of a series of types with different behaviour ranging from thelawrencei-type (of buffalo) causing Corridor disease, through thebovis-type causing Rhodesian malignant theileriosis to theparva-type causing classical East Coat fever. Seven cattle-tick passages of abovis-type strain did not result in transformation into aparva-type.

Four species of bovineTheileriae are now known to occur in southern Africa:T. parva (lawrencei- andbovis-types) andT. taurotragi, both transmitted byR. appendiculatus, andT. mutans andT. velifera both withAmblyomma spp. as vectors.


Public Health Causal Agent Veterinary Medicine Pathogenic Strain Serological Evidence 
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Agent De La Theileriose Bovine En Afrique Australe


Une souche pathogène et quatre souches bovines bénignes deTheileria d'Afrique australe, toutes transmises parRhipicephalus appendiculatus ont été comparées entre elles, puis avec des souches de bovins et de buffles du complexe deT. parva de l'Afrique australe et orientale et enfin avec des souches bovines deT. taurotragi de Tanzanie considérées comme originaires de l'Elan du Cap. Les critères utilisés ont été d'ordre parasitologique, clinique, sérologique avec recherche des caractères d'immunité-croisée.

Les sourches bénignes sont similaires àT. taurotragi. La sérologie a suggéreré queT. taurotragi est également infectieuse chez le mouton. La souche pathogène appartient au complexe deT. parva ; ce complexe consiste en une série de types présentant divers comportements depuis le typelawrencei du buffle causant l'affection “Corridor”, et le typebovis cause de la theileriose maligne de Rhodésie jusqu'au type “parva” cause de l'East Coast Fever classique. 7 passages bétail-tique d'une souche de typebovis n'ont pas réussi à la transformer en typeparva. 4 espèces de Theileries bovines sont maintenant connues en Afrique australe :T. parva (typeslawrencei etbovis) etT. taurotragi toutes deux transmises parR. appendiculatus, T. mutans etT. velifera avec toutes deuxAmblyomma spp. comme vecteurs.

Agentes Causales De Theileriosis En El Sur De Africa


Se compararon 5 cepas deTheileria del sur de Africa, 1 patógena y 4 benignas, todas transmitidas porRhipicephalus appendiculatus, entre si y también con cepas derivadas de bovinos y búfalos, del complejoT. parva, del sur y este de Africa, y con cepas bovinas deT. taurotragi de Tanzania derivadas de antílope eland. Los criterios de evaluación utilizados fueron parasitológico, clínico, serológico, utilizando también los caracteres de inmunidad cruzada.

Las cepas benignas son similares aT. taurotragi de bovinos. Las pruebas serológicas indicaron que esta última es también infectiva para ovejas. Las cepas patógenas pertenecen al complejoT. parva; este último consiste de un rango de tipos con diferente comportamiento que van desde el tipolawrencei (búfalo) que causa la enfermedad Corridor, a través del tipobovis que causa la theileriosis maligna de Rodesia, hasta el tipoparva que causa la típica Fiebre de la Costa Este. Siete pasajes a través de bovinos y garrapatas de un tipobovis, no produjo transformación alguna al tipoparva.

Se conocen entonces 4 especies deTheileriae bovina en el sur de Africa :T. parva (tiposlawrencei ybovis) yT. taurotragi, ambas transmitidas porR. appendiculatus, yT. mutans yT. velifera, ambas transmitidas porAmblyomma spp.


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Copyright information

© Longman Group Limited 1982

Authors and Affiliations

  • G. Uilenberg
    • 1
  • N. M. Perié
    • 1
  • J. A. Lawrence
    • 2
  • A. J. de Vos
    • 3
  • R. W. Paling
    • 4
  • A. A. M. Spanjer
    • 1
  1. 1.University of Utrecht, Faculty of Veterinary Medicine, Institute for Tropical and Protozoan DiseasesUtrechtThe Netherlands
  2. 2.Veterinary Research LaboratoryCauseway, SalisburyZimbabwe
  3. 3.Veterinary Research InstitutePO OnderstepoortRepublic of South Africa
  4. 4.Project FAO/PNUD RWA 77/006 “Lutte contre les Tiques”ButareRwanda

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