Investigating Solutions to Early Mortality Syndrome in Lake Michigan: More Effective Hatchery Treatment and Pathway Definition

Grant: # 0042

Grant Amount: $452,000.00

Board Decision Year: 1998

U.S. Geological Survey - Biological Resources Division (Wellsboro)

Biological Resources Division

Honeyfield, Dale (honeyfie@usgs.gov) 570-724-3322 e233

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

Project Details

Managing for sustainable salmon and trout fisheries in Lake Michigan is threatened by the occurrence of early mortality syndrome (EMS), a syndrome that reduces egg survival. This three-year project identified the most effective thiamine treatment methodology to maintain Lake Michigan hatchery production. A screening technique was developed to measure egg thiamine levels that will provide a tool to decide which eggs require treatment was developed. Once the cause and pathway of EMS is identified, fishery agencies will have the information to help manage the Lake Michigan fish community. Methodology and analytical techniques from this project can be transferred to investigate recent recruitment problems in other Great Lakes species.

Documents

Final Report
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Final Report
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