Kistner T P, Matlock S M, Wyse D, Mason G E
J Wildl Dis. 1977 Apr;13(2):125-30. doi: 10.7589/0090-3558-13.2.125.
The lungs and gastrointestinal tracts from 18 hunter-killed bighorn rams (Ovis canadensis californiana) were examined in total or in part for helminth parasites during a two-year study of three separate herds in Eastern Oregon. Prevalence was 100% with the lungworm Protostrongylus stilesi. The gastrointestinal fauna from 11 rams comprised Cooperia oncophora, Marshallagia marshalli, Nematodirus oiratianus, Oesophagostomum spp., Ostertagia occidentalis, O. ostertagi, Skrjabinema ovis, Trichostrongylus axei and Trichuris spp. Adult Wyominia tetoni and cysticerci of Taenia hydatigena were recovered from two of six livers examined. Additionally, searches for potential molluscan intermediate hosts for P. stilesi were conducted on one bighorn range. Snails identified as belonging to the genera Euconulus, Pupilla and Vallonia were found on both the summer and winter ranges.
在对俄勒冈州东部三个不同兽群进行的为期两年的研究中，对18只被猎人猎杀的加利福尼亚大角羊（Ovis canadensis californiana）的肺和胃肠道进行了全部或部分检查，以寻找蠕虫寄生虫。肺线虫斯氏原圆线虫（Protostrongylus stilesi）的感染率为100%。11只公羊的胃肠道寄生虫包括牛古柏线虫（Cooperia oncophora）、马氏马歇尔线虫（Marshallagia marshalli）、奥氏细颈线虫（Nematodirus oiratianus）、食道口线虫属（Oesophagostomum spp.）、西方奥斯特他线虫（Ostertagia occidentalis）、奥氏奥斯特他线虫（O. ostertagi）、绵羊斯克里亚宾线虫（Skrjabinema ovis）、艾氏毛圆线虫（Trichostrongylus axei）和毛首线虫属（Trichuris spp.）。在检查的6个肝脏中的2个中发现了成年的特氏怀俄明线虫（Wyominia tetoni）和泡状带绦虫（Taenia hydatigena）的囊尾蚴。此外，在一个大角羊活动区域对斯氏原圆线虫的潜在软体动物中间宿主进行了搜索。在夏季和冬季活动区域都发现了被鉴定为真带螺属（Euconulus）、瞳孔螺属（Pupilla）和瓦娄蜗牛属（Vallonia）的蜗牛。
