Huong L T, Uggla A
Department of Parasitology and Pathology, College of Agriculture and Forestry, National University of Ho Chi Minh City, Thu Duc, Vietnam.
J Parasitol. 1999 Feb;85(1):102-4.
Sarcocystis dubeyi n. sp. is proposed for a species forming thick-walled, microscopic sarcocysts in striated muscular tissues of the water buffalo (Bubalus bubalis). Sarcocysts of S. dubeyi were found in histological sections of skeletal muscles and esophagus, but not in heart and tongue, of 8 (13%) of 60 water buffaloes examined in Ho Chi Minh City, Vietnam. Sarcocysts of S. dubeyi were up to 600 microns long and up to 200 microns wide. The cyst wall was 4.5-9 microns thick and was composed of tightly packed, cylindrical villar protrusions (Vp) that had a uniform width of up to 3 microns, a length of up to 8 microns, and a blunt, often flattened tip. The Vp contained microfilaments but no prominent electron-dense granules. The definitive host of S. dubeyi was not determined, but it could possibly be humans or other primates. By the present description, 4 Sarcocystis species are recognized in the water buffalo: the macrocyst-forming Sarcocystis fusiformis and S. buffalonis and the microcyst-forming S. levinei and S. dubeyi.
杜氏肉孢子虫（Sarcocystis dubeyi）新种是指在水牛（Bubalus bubalis）横纹肌组织中形成厚壁、微观肉孢子囊的一种物种。在越南胡志明市检查的60头水牛中，有8头（13%）的骨骼肌和食管组织切片中发现了杜氏肉孢子虫的肉孢子囊，但在心脏和舌头中未发现。杜氏肉孢子虫的肉孢子囊长达600微米，宽达200微米。囊壁厚4.5 - 9微米，由紧密排列的圆柱形绒毛突起（Vp）组成，这些突起宽度均匀，可达3微米，长度可达8微米，尖端钝圆，常呈扁平状。Vp含有微丝，但没有明显的电子致密颗粒。杜氏肉孢子虫的终末宿主尚未确定，但可能是人类或其他灵长类动物。根据目前的描述，在水牛中已识别出4种肉孢子虫：形成大囊的梭形肉孢子虫（Sarcocystis fusiformis）和水牛肉孢子虫（S. buffalonis）以及形成微囊的莱氏肉孢子虫（S. levinei）和杜氏肉孢子虫（S. dubeyi）。
