The transovarial transmission of Babesia caballi by Hyalomma truncatum.
Babesia caballi, isolated from a horse that originated from South West Africa/Namibia, was transmitted transovarially by adult Hyalomma truncatum. B. caballi proved to be highly infective for adult H. truncatum. Forty-five per cent of ticks feeding on a reacting animal with an extremely low parasitaemia became infected. In spite of a low parasitaemia, the ticks were severely affected by the parasite. Seventy per cent of the infected ticks either died during oviposition or after laying only a few eggs. The features of the infection in horses were: a prepatent period of 10 days, very low parasitaemias with low pathogenicity and spontaneous recovery of the infected animals.
De Waal
D T
DT
Veterinary Research Institute, Onderstepoort.
D000818:Animals; D001404:Babesiosis / Q000635:transmission*; D006734:Horse Diseases / Q000635:transmission*; D006736:Horses / Q000469:parasitology; D007303:Insect Vectors / Q000469:parasitology; D010063:Ovum; D013987:Ticks / Q000469:parasitology