Parasite Threatens Trout and Salmon Populations in Canadian National Parks

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Parks Canada officials are closely monitoring lakes and rivers in Kootenay and Yoho national parks for a parasite that could decimate up to 90% of young trout and salmon populations. The parasite, known as whirling disease, was discovered in September in Emerald Lake, prompting the closure of the lake and nearby waterways. Additional suspected cases have been found in other areas. The closures will remain in effect until March next year. While the disease does not pose a risk to humans, it can be deadly for fish, causing spinal deformities and erratic swimming.

Yoho National Park signage is shown in this handout image. Parks Canada officials say they're closely watching lakes and rivers in Kootenay and Yoho national parks for a parasite that could "decimate" trout and salmon populations.Parks Canada officials said they’re closely watching lakes and rivers in Kootenay and Yoho national parks for a parasite that could “decimate” as much as 90 per cent of young trout and salmon.

Parks Canada has closed all waterbodies in Yoho and Kootenay national parks until the end of March next year. “Aquatic invasive species, such as the parasite responsible for whirling disease, threaten freshwater ecosystems and native trout populations, harm infrastructure and reduce aquatic recreational opportunities,” Masse said.Meet 28 workers sharing a $5-million lotto win, and what each of them is getting

 

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Parasite Threatens Trout and Salmon in Canadian National ParksParks Canada officials are monitoring lakes and rivers in Kootenay and Yoho national parks for a parasite that could decimate young trout and salmon populations. The first suspected case of whirling disease in British Columbia was found in September, prompting the closure of affected waterways. Additional suspected cases have since been discovered. The disease poses no risk to humans but can be deadly for fish, causing spinal deformities and erratic swimming. Parks Canada has closed all waterbodies in the parks until March next year to protect at-risk species and preserve the ecosystem.
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