Assessment of Theileria infections in Rhipicephalus appendiculatus ticks collected from the field

Zeitschrift Für Parasitenkunde
A R WalkerB L Leitch

Abstract

Collections of adult Rhipicephalus appendiculatus ticks were made from bait cattle and vegetation at two field sites in areas of Kenya in which East Coast fever caused by Theileria parva is endemic. These ticks, together with two experimentally infected batches of ticks, were examined for infection with Theileria by four methods. Whole salivary glands were stained with methyl green pyronin or Feulgen's stain. Whole ticks were ground in medium, the suspensions were filtered and centrifuged and the treated material was examined microscopically and tested for infectivity by inoculation into cattle. All field collections and experimental batches of ticks were infected with Theileria and all four methods detected the infections. Approximately 1.5% of the ticks in the field collections were found to be infected with Theileria and the treated material from these ticks transmitted T. parva to cattle. It is considered that it will be feasible to survey field infection rates quantitatively by collecting ticks from bait cattle and vegetation for examination by a combination of salivary gland staining and preparation of tick suspensions for microscopy and infectivity tests.

Citations

Feb 1, 1990·Tropical Animal Health and Production·A R Walker
Aug 1, 1986·Tropical Animal Health and Production·A K SangwanS Samantaray
Apr 29, 2011·Journal of Parasitic Diseases : Official Organ of the Indian Society for Parasitology·M HaqueS S Rath
Feb 1, 1984·International Journal for Parasitology·T T DolanK Soulsby
Feb 1, 1986·Veterinary Parasitology·G MollB L Leitch
Jan 11, 2000·Veterinary Parasitology·G R MuraguriN McHardy
Jul 21, 1998·Annals of the New York Academy of Sciences·D WattO A Sparagano

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