Original Research

Cloned Theileria parva produces lesser infections in ticks compared to uncloned T. parva despite similar infections in cattle : research communication

A.R. Walker, F. Katzer, D. Ngugi, D. McKeever
Onderstepoort Journal of Veterinary Research | Vol 73, No 2 | a163 | DOI: https://doi.org/10.4102/ojvr.v73i2.163 | © 2006 A.R. Walker, F. Katzer, D. Ngugi, D. McKeever | This work is licensed under CC Attribution 4.0
Submitted: 13 September 2006 | Published: 13 September 2006

About the author(s)

A.R. Walker,
F. Katzer,
D. Ngugi,
D. McKeever,

Full Text:

PDF (210KB)

Abstract

Experimental transmissions of cloned Theileria parva in cattle with Rhipicephalus appendiculatus ticks were compared to transmissions with uncloned T. parva during studies on the potential for genetic recombination during syngamy of Theileria to produce antigenic diversity for evasion of bovine immunity. Prevalence and abundance of T. parva infection in adult ticks, which resulted from the feeding of nymphs on the calves, were significantly higher in the uncloned compared to the cloned T. parva. Development of sporoblasts of T. parva in the ticks to produce infective sporozoites was similar. There was no statistically significant difference in the clinical course of infection in cattle between cloned and uncloned T. parva. It was concluded that cloned T. parva has characteristics that reduce its viability during the tick stages of its life cycle.

Keywords

No related keywords in the metadata.

Metrics

Total abstract views: 4064
Total article views: 3285

 

Crossref Citations

1. Mechanical transfer of Theileria orientalis: possible roles of biting arthropods, colostrum and husbandry practices in disease transmission
Jade Frederick Hammer, Cheryl Jenkins, Daniel Bogema, David Emery
Parasites & Vectors  vol: 9  issue: 1  year: 2016  
doi: 10.1186/s13071-016-1323-x