Blake J E, McLean B D, Gunn A
Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada.
J Wildl Dis. 1991 Oct;27(4):527-33. doi: 10.7589/0090-3558-27.4.527.
Sixty-seven muskox (Ovibos moschatus) carcasses, 53 skeletal remains and two sick muskoxen were seen during an aerial survey of the Thomsen River region, northern Banks Island, Northwest Territories, Canada in late July 1986. Complete necropsies were performed on 29 muskoxen estimated to have died within the previous 3 to 5 days. Twenty were diagnosed with acute yersiniosis due to Yersinia pseudotuberculosis serotype 1B and were in excellent body condition. A diagnosis could not be made on seven animals due to marked autolysis; however, these muskoxen also were in excellent body condition. The remaining two were aged, emaciated muskoxen. This report describes the first occurrence of yersiniosis in free-ranging muskoxen and the first documentation of large scale mortality due to this disease in a free-ranging population of wild ungulates.
1986年7月下旬，在加拿大西北地区班克斯岛北部汤姆森河地区的一次空中调查中，发现了67具麝牛（Ovibos moschatus）尸体、53具骨骼遗骸以及两头生病的麝牛。对估计在过去3至5天内死亡的29头麝牛进行了完整的尸检。其中20头被诊断为因1B型假结核耶尔森菌感染导致的急性耶尔森菌病，且身体状况良好。由于尸体严重自溶，7头动物无法做出诊断；不过，这些麝牛的身体状况同样良好。其余两头是年老体弱、消瘦的麝牛。本报告描述了自由放养的麝牛中首次出现耶尔森菌病，以及这种疾病导致自由放养的野生有蹄类动物大规模死亡的首次记录。
