Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-10T18:53:43.363Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bailey, K. P., (1960). Notes on the rearing of Rhipicephalus appendiculatus and their infection with Theileria parva for experimental transmission. Bulletin of Epizootiological Diseases of Africa 8, 33–43.Google Scholar
Brocklesby, D. W., Barnett, S. F., & Scott, O. R., (1961). Morbidity and mortality rates in East Coast fever (Theileria parva infection) and their application to drug screening procedures. British Veterinary Journal 117, 529–31.Google Scholar
Burridge, M. J., & Kimber, C. D., (1972). The indirect fluorescent antibody test for experimental East Coast fever (Theileria parva infection of cattle). Evaluation of a cell culture schizont antigen. Research in Veterinary Science (in the Press).Google Scholar
Cunningham, M. P., Joyner, L. P., Brown, C. O. D., Purnell, R. E., & Bailey, K. P., (1973). Infection of cattle with East Coast fever by inoculation of the infective stage of Theileria parva harvested from the tick vector Rhipicephalur appendiculatus. (in the Press).Google Scholar
Purnell, R. E., & Joyner, L. P., (1968). The development of Theileria parva in the salivary glands of the tick Rhipicephalus appendiculatus. Parasitology 58, 725–32.CrossRefGoogle ScholarPubMed