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Observation on the schizont stage of an unidentified Theileria sp. in experimentally infected sheep

Parasitology Research volume 91, pages 34–39 (2003)Cite this article

Abstract

The schizont stage of an unidentified Theileria sp. infective for small ruminants was observed. Intact sheep were infected with adult Haemaphysalis qinghaiensis collected from fields where ovine theileriosis was prevalent. When the infested sheep developed theileriosis, tissue and organ smears were prepared. Theileria schizonts were demonstrated in liver, spleen, lung, kidney, lymph node and peripheral blood. Most of the schizonts were found outside the host cells, which was probably a smear artifact. This study adds our knowledge that lung and kidney can be parasitized by schizonts of Theileria sp.

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Acknowledgements

This study was partially supported by the Department of Science and Technology (GS992-A71-018) in Gansu Province, Lanzhou, Gansu, the National Natural Science Foundation of China (39970565), Beijing, the ADDAV project (ICA4-CT-2000-30028) coordinated by Professor J.S. Ahmed and the INCO-DEV programme of the European Commission, Brussels. The authors would like to thank Dr. Theo de Waal, Parasitology Division, Onderstepoort Veterinary Institute, South Africa, for his critical correction of and comments on this manuscript.

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  1. Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 11, 730046, Lanzhou, Gansu, The People's Republic of China

    Hong Yin, Guangyuan Liu, Jianxun Luo, Guiquan Guan, Miling Ma & Qi Bai

  2. Research Centre Borstel, Centre for Medicine and Biosciences, Parkallee 1–20, 23845, Borstel, Germany

    Jabbar Ahmed

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  1. Hong Yin
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  2. Guangyuan Liu
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  3. Jianxun Luo
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  4. Guiquan Guan
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  5. Miling Ma
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  6. Jabbar Ahmed
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  7. Qi Bai
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Correspondence to Qi Bai.

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Yin, H., Liu, G., Luo, J. et al. Observation on the schizont stage of an unidentified Theileria sp. in experimentally infected sheep. Parasitol Res 91, 34–39 (2003). https://doi.org/10.1007/s00436-002-0823-0

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  • DOI: https://doi.org/10.1007/s00436-002-0823-0

Keywords

  • Small Ruminant
  • Blood Film
  • Tick Infestation
  • Infected Sheep
  • Schizont Stage