Posted: Jun 18, 2013 12:20 PM by KBZK Media Center
BOZEMAN - Three bison found dead in the Yellowstone River did not die from malignant catarrhal fever, a disease that can cause fatal infections in bison, according to Montana Fish, Wildlife and Parks.
In all three cases, tissues show no sign of disease and the exact cause of death cannot be determined, a news release states. The bison did show signs of trauma, according to FWP veterinarian Jennifer Ramsey who suggests the animals could have been injured after being swept into rocks during high water.
The dead bison were spotted in the Yellowstone River in mid-May. FWP crews retrieved tissue samples from each bison, including one near Emigrant and the other two closer to Gardiner.
"Given the recent introduction of domestic sheep in the Gardiner area, FWP looked into the possibility of malignant catarrhal fever in these bison. Malignant catarrhal fever is a viral disease which may be carried by domestic sheep without any symptoms, but can cause fatal infections in bison," the release states.