由于鱼类寄生虫和入侵物种的威胁，加拿大公园管理局关闭了库特尼、优鹤和沃特顿湖国家公园的水体，限制措施持续到三月。 Parks Canada closes water bodies in Kootenay, Yoho, and Waterton Lakes National Parks due to fish parasite and invasive species threat, with restrictions until March.
由于鱼类寄生虫传播的威胁，加拿大公园管理局已关闭加拿大库特尼和幽鹤国家公园的所有水体。 Parks Canada has closed all water bodies in Kootenay and Yoho national parks in Canada due to the threat of a fish parasite spreading. 艾伯塔省沃特顿湖国家公园的船只通行也受到限制，以防止入侵物种的传播，包括致命的旋转病寄生虫以及入侵的斑马和斑驴贻贝。 Watercraft access is also restricted in Alberta's Waterton Lakes National Park to prevent the spread of invasive species, including the deadly whirling disease parasite and invasive zebra and quagga mussels. 关闭和限制措施将至少持续到明年三月。 The closures and restrictions will remain in place until at least March next year.