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Status of whirling disease in the Crowsnest River : technical report, 2019

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The Crowsnest River became a provincial priority to understand the impact of whirling disease on rainbow trout populations, prompting a comprehensive study of the watershed in 2019. Results of the... More ≫

Description

The Crowsnest River became a provincial priority to understand the impact of whirling disease on rainbow trout populations, prompting a comprehensive study of the watershed in 2019. Results of the study are contained in this report. The objectives of this study were to: determine the spatial distribution, infection prevalence and severity of Mc in the Crowsnest River; measure triactinomyxon density in free-flowing water; characterize oligochaete relative abundance throughout the Crowsnest River; measure the timing and location of optimal water temperatures for parasite development and transmission; and estimate density and age-class structure of juvenile rainbow trout. The Crowsnest River is a high-value sport fishery in southern Alberta.

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Whirling disease in the Crowsnest River

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In 2019, Alberta Environment and Parks conducted a comprehensive study to understand the impact of whirling disease on rainbow trout populations in the Crowsnest River. This document provides a... More ≫

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In 2019, Alberta Environment and Parks conducted a comprehensive study to understand the impact of whirling disease on rainbow trout populations in the Crowsnest River. This document provides a brief background on whirling disease, a summary of the Crowsnest River study, and an adaptive management plan to address whirling disease in the Crowsnest River.

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Whirling disease caused by Myxobolus cerebralis

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One-page infographic providing an overview of whirling disease in Alberta.

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Whirling disease in Alberta : misunderstandings debunked

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Questions and misconceptions about whirling disease are identified and addressed.

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Quick facts : whirling disease [2018]

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Quick fact card about whirling disease and what owners of stocked ponds can do to reduce the risk of whirling disease appearing in their waterbodies.

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Whirling disease

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Whirling disease, a disease of salmonoid fishes, has recently found in Alberta. This disease can cause high levels of mortality in some fish, but it is not known how it will impact Alberta fish... More ≫

Description

Whirling disease, a disease of salmonoid fishes, has recently found in Alberta. This disease can cause high levels of mortality in some fish, but it is not known how it will impact Alberta fish populations. This fact sheet presents information about the disease and the Alberta's response to its appearance in the province.

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Quick facts : whirling disease [2017]

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Quickfacts card talking about whirling disease

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Reducing the risk of spreading whirling disease

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This fact sheet presents general information and best practices on how to reduce the risk of spreading whirling disease.

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