Canadian Arctic Muskoxen Threatened by Emerging Diseases and Climate Change
Canadian Arctic Muskoxen Threatened by Emerging Diseases and Climate Change
US · Published Apr 4, 2026
Muskoxen in the Canadian Arctic are threatened by emerging diseases and climate change, impacting their populations and Inuit communities.
A novel bacterial strain, *Erysipelothrix rhusiopathiae*, and brucellosis are causing significant muskox mortalities.
Climate change exacerbates these threats with hotter summers and increased rain-on-snow events, hindering access to food.
Emerging diseases and climate change threaten muskoxen
Muskoxen in the Canadian Arctic are facing a critical juncture due to the combined impacts of emerging diseases and climate change. Since 2009, a novel strain of *Erysipelothrix rhusiopathiae*, referred to as the 'Arctic clone,' has been responsible for widespread muskox deaths on Victoria and Banks islands. Compounding this issue is the growing prevalence of brucellosis, a zoonotic disease, which further endangers muskoxen on Victoria Island and mainland areas. These health threats are being monitored through a collaborative program involving Inuit hunters, scientists, and government bodies.
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