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Experiments on transmission of an unidentified Theileria sp. to small ruminants with Haemaphysalis qinghaiensis and Hyalomma anatolicum anatolicum.
- Source :
-
Veterinary parasitology [Vet Parasitol] 2002 Aug 30; Vol. 108 (1), pp. 21-30. - Publication Year :
- 2002
-
Abstract
- Experiments on the transmission of an unidentified Theileria sp. infective for small ruminants by Haemaphysalis qinghaiensis and Hyalomma anatolicum anatolicum were carried out. Three Theileria-free batches of adult, larvae, and nymphs of laboratory reared H. qinghaiensis and Hy. a. anatolicum ticks were infected by feeding them on sheep infected with Theileria sp. The Theileria sp. was originally isolated from adult ticks of H. qinghaiensis, by inoculation of blood stabilates or tick transmission. H. qinghaiensis has been shown to be capable of transmitting the Theileria sp. infective for small ruminants transstadially to sheep and goats. The nymphs developed from the larvae engorged on the sheep infected with the parasite transmitted the pathogen to splenectomized sheep with prepatent periods of 30, 31 days, respectively; but the subsequent adult ticks of H. qinghaiensis derived from the nymphs did not transmit the pathogen to sheep. However, adults developed from the nymphs engorged on the sheep infected with the parasite transmitted the pathogen to sheep with prepatent periods of 24-27 days. The larvae, nymphs and adult ticks derived from female H. qinghaiensis ticks engorged on infected sheep were not able to transmit the parasite transovarially. The same experiments were done with Hy. a. anatolicum, but examination for presence of piroplasma of Theileria sp. from all animals were negative, demonstrating that Hy. a. anatolicum could not transmit the organism to sheep or goats.<br /> (Copyright 2002 Elsevier Science B.V.)
- Subjects :
- Animals
Disease Transmission, Infectious veterinary
Goat Diseases parasitology
Goat Diseases transmission
Goats
Larva parasitology
Nymph parasitology
Sheep
Sheep Diseases parasitology
Sheep Diseases transmission
Theileriasis parasitology
Time Factors
Arachnid Vectors parasitology
Ixodidae parasitology
Theileria physiology
Theileriasis transmission
Subjects
Details
- Language :
- English
- ISSN :
- 0304-4017
- Volume :
- 108
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Veterinary parasitology
- Publication Type :
- Academic Journal
- Accession number :
- 12191896
- Full Text :
- https://doi.org/10.1016/s0304-4017(02)00166-8