Historic and Spatial Variation of Lake Whitefish Maturation Schedules

Grant: # 0662

Grant Amount: $107,290.13

Board Decision Year: 2005

University of Michigan - Cooperative Institute for Limnology and Ecosystem Research (Ann Arbor)

Cooperative Institute for Limnology and Ecosystem Research

Hook, Tomas (thook@umich.edu) (734) 741-2388

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

Project Details

Harvesting of fish stocks removes individuals based upon traits including size, behavior, and location. Selective harvesting could therefore alter genetic composition and negatively affect growth, maturation schedules, and whole stock productive capacity. Lake Michigan lake whitefish are selectively harvested based on size. Researchers evaluated whether whitefish maturation schedules have changed over time, estimated genetically based effects of selective harvesting, and provide recommendations for minimizing these effects.


Final Report