Nutritional value of Mysis diluviana for the growth, development and reproduction of hatchery-reared salmonids.

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Mysis diluviana, a shrimp-like crustacean, is an invasive species in Okanagan Lake. As part of a strategy by theBC government to reduce the impact of this species on the natural lake ecosystem, Piscine Energetics Inc. hasbeen harvesting Mysis from Okanagan Lake since 2000 and retails the harvested Mysis as fish food to theornamental aquarium industry. There are indications that Mysis could also be an effective source of nutritionfor rearing trout and salmon in hatcheries. If so, this could provide three important benefits: it could provideincreased economic opportunities for the Mysis harvesting industry, help BC hatcheries transition away fromfish foods containing unsustainable marine fish meal, and decrease the population of this invasive species inOkanagan Lake. This project will therefore determine the nutritional value of Mysis from Okanagan Lake andits effects on the growth and survival of trout and salmon reared in hatcheries managed by the FreshwaterFisheries Society of British Columbia.