Hum S, Barton N J, Obendorf D, Barker I K
Department of Agriculture and Rural Affairs, Regional Veterinary Laboratory, Bairnsdale, Victoria, Australia.
J Wildl Dis. 1991 Oct;27(4):697-700. doi: 10.7589/0090-3558-27.4.697.
Eimeria arundeli is a widespread coccidian parasite of the common wombat (Vombatus ursinus), and has been considered to be nonpathogenic. We describe disease in two captive juvenile wombats ascribed to infection with E. arundeli. One animal had diarrhea, the second had mucoid soft feces and lost weight over several weeks prior to death. Masses of coccidial gametocytes in hypertrophic cells in the lamina propria distended villi, causing grossly visible raised pale thickened regions over extensive areas of the mucosa of the small intestine in both animals. Neutrophils infiltrated affected mucosa, and there was an inflammatory exudate into the intestinal lumen in case one. In case two, neutrophils infiltrated the lamina propria of villi focally, crypts were distended by necrotic debris, and epithelium on villi was extremely attenuated. No bacterial pathogens were isolated from lung and intestine in case one; case two was not cultured. Oocysts consistent with E. arundeli were present in large numbers in floatations of diarrheic feces in both cases.
阿伦德尔艾美球虫是普通袋熊（袋熊属）中一种广泛存在的球虫寄生虫，一直被认为是非致病性的。我们描述了两只圈养幼年袋熊因感染阿伦德尔艾美球虫而患病的情况。一只动物出现腹泻，另一只动物有黏液样软便，并且在死亡前几周体重减轻。固有层肥大细胞内大量的球虫配子体使绒毛扩张，导致两只动物小肠黏膜大面积出现肉眼可见的苍白增厚隆起区域。中性粒细胞浸润受影响的黏膜，在病例一中有炎性渗出物进入肠腔。在病例二中，中性粒细胞局部浸润绒毛固有层，隐窝因坏死碎片而扩张，绒毛上的上皮极度变薄。病例一中从肺和肠道未分离出细菌病原体；病例二未进行培养。在两例腹泻粪便漂浮物中均大量存在与阿伦德尔艾美球虫相符的卵囊。
