Effects of Egg and Fry Predators on Lake Trout Recruitment in Lake Michigan

Grant: # 0064

Grant Amount: $345,421.88

Board Decision Year: 2000

Department of Fisheries and Oceans - Bayfield Institute (Burlington, ON, Canada)

Bayfield Institute

Fitzsimons, John ([email protected]) 905-336-4865

GLFT - Ecosystem Health and Sustainable Fish Populations-D - Ecological and biological fisheries research to inform management

Project Details

The influence of egg and fry predators on the lack of successful reproduction by lake trout in the Great Lakes is poorly understood. Predation, particularly by exotic species, may exceed the potential of spawning reefs to successfully incubate eggs and produce measurable recruitment. Researchers evaluated egg, fry, and predator abundance at spawning reefs in northeastern Lake Michigan, and used egg seeding, alewife exclosures, and laboratory experiments to assess the current effect of predation on recruitment.

Documents

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