Dubey J P, Lindsay D S, Speer C A, Fayer R, Livingston C W
U.S. Department of Agriculture, Zoonotic Diseases Laboratory, Beltsville, Maryland 20705.
J Parasitol. 1988 Dec;74(6):1033-8.
Histological sections of tongues, esophagi, and diaphragms from 512 adult ewes from the northwest United States and Texas were examined for Sarcocystis spp. Sarcocysts were found in sections of 82.1% of 504 tongues, 44.4% of 478 esophagi, and 51.7% of 89 diaphragms. Sarcocystis tenella was the predominant species and was found in 430 (84.0%) sheep; S. arieticanis was found in 18 (3.5%) sheep. The mean number of S. tenella sarcocysts in tissue sections was approximately 10 times higher than that of S. arieticanis. The identification of S. arieticanis was confirmed by ultrastructural studies and by transmission to dogs. Macroscopic sarcocysts of S. gigantea were also found but were not quantitated in all sheep; sarcocysts of S. medusiformis were not observed.
对来自美国西北部和得克萨斯州的512只成年母羊的舌头、食管和膈肌的组织切片进行了检查，以寻找肉孢子虫属。在504只舌头的切片中，82.1%发现了肉孢子虫囊；在478只食管的切片中，44.4%发现了肉孢子虫囊；在89只膈肌的切片中，51.7%发现了肉孢子虫囊。柔嫩肉孢子虫是主要种类，在430只（84.0%）绵羊中发现；阿里埃蒂肉孢子虫在18只（3.5%）绵羊中发现。组织切片中柔嫩肉孢子虫囊的平均数量比阿里埃蒂肉孢子虫的约高10倍。通过超微结构研究和接种给犬类，证实了阿里埃蒂肉孢子虫的鉴定。还发现了巨型肉孢子虫的肉眼可见的包囊，但未对所有绵羊进行定量；未观察到水母状肉孢子虫的包囊。
