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

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... 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 Program report

Description

Annual report on the work being done by Alberta Environment and Parks, through its Whirling Disease Program, to manage the spread of whirling disease in the province. First appearing in Alberta in... More ≫

Description

Annual report on the work being done by Alberta Environment and Parks, through its Whirling Disease Program, to manage the spread of whirling disease in the province. First appearing in Alberta in 2016, the disease is caused by a microscopic parasite that affects salmonid fish such as trout, salmon and whitefish.

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