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East Coast fever: correlation between the morphology and infectivity of Theileria parva developing in its tick vector

Published online by Cambridge University Press:  06 April 2009

R.E. Purnell ,
C. G. D. Brown ,
M. P. Cunningham ,
M. J. Burridge ,
I. M. Kirimi  and
M. A. Ledger
R.E. Purnell
Affiliation:
Immunological Research on Tick-borne Cattle Diseases and Tick Control Project†East African Veterinary Research Organization, Muguga, P.O. Kabete, Kenya
C. G. D. Brown
Affiliation:
Immunological Research on Tick-borne Cattle Diseases and Tick Control Project†East African Veterinary Research Organization, Muguga, P.O. Kabete, Kenya
M. P. Cunningham
Affiliation:
Immunological Research on Tick-borne Cattle Diseases and Tick Control Project†East African Veterinary Research Organization, Muguga, P.O. Kabete, Kenya
M. J. Burridge
Affiliation:
Immunological Research on Tick-borne Cattle Diseases and Tick Control Project†East African Veterinary Research Organization, Muguga, P.O. Kabete, Kenya
I. M. Kirimi
Affiliation:
Immunological Research on Tick-borne Cattle Diseases and Tick Control Project†East African Veterinary Research Organization, Muguga, P.O. Kabete, Kenya
M. A. Ledger
Affiliation:
Immunological Research on Tick-borne Cattle Diseases and Tick Control Project†East African Veterinary Research Organization, Muguga, P.O. Kabete, Kenya
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Extract

Rhipicephalus appendiculatus ticks, infected with Theileria parva, were fed on rabbits and removed at daily intervals for 9 days. Half of the ticks removed were dissected and their salivary glands processed and examined for parasites. The remaining ticks which had been removed were ground up and aliquots of the supernatant fluid thus obtained were injected into East Coast fever susceptible cattle. Cattle injected with supernatant fluids from ticks fed for 4–9 days became infected, and this could be correlated with the histological detection of mature parasites in the corresponding ticks. The most highly infective supernatant fluids were prepared from 5-day-fed ticks. In a second experiment it was shown that female ticks of a variety of weights contained infective particles of T. parva.

Type
Research Article
Information
Parasitology , Volume 66 , Issue 3 , June 1973 , pp. 539 - 544
Copyright
Copyright © Cambridge University Press 1973

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References

REFERENCES

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