Thiaminase in the Lower Food Web: Spatial and Temporal Trends, and Potential Impacts on the Thiamine Dynamics and Growth and Survival of Juvenile Fish
Grant: # 0660
Grant Amount: $360,000.00
Board Decision Year: 2005
Department of Fisheries and Oceans - Bayfield Institute (Burlington, ON, Canada)
Fitzsimons, John (firstname.lastname@example.org) 905-336-4865
GLFT - Ecosystem Health and Sustainable Fish Populations-C - Ecological and biological fisheries research to inform management
Early life stage mortality in salmonines of the Great Lakes continues to be problematic. Thiamine deficiency, related to the thiaminase content of planktivorous alewives, has been causally linked to early life stage mortality. The factors responsible for spatial and temporal differences in thiaminase in the food web that influence thiaminase in alewives are unidentified. This project was designed to assess the dynamics of planktonic thiaminase and determine the risk of current levels to juvenile lake trout.