Experiments on transmission of an unidentified Theileria sp to small ruminants with Haemaphysalis qinghaiensis and Hyalomma anatolicum anatolicum
文献类型: 外文期刊
第一作者: Yin, H
作者: Yin, H;Luo, JX;Guan, GQ;Lu, BY;Ma, ML;Zhang, QC;Lu, WS;Lu, CP;Ahmed, J
作者机构:
关键词: Theileria sp.;Haemaphysalis qinghaiensis;Hyaolomina anantolicum anatolicum;transmission of disease
期刊名称:VETERINARY PARASITOLOGY ( 影响因子:2.738; 五年影响因子:2.951 )
ISSN: 0304-4017
年卷期: 2002 年 108 卷 1 期
页码:
收录情况: SCI
摘要: 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. (C) 2002 Elsevier Science B.V. All rights reserved.
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