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Abstract
The U.S. Geological Survey’s Great Lakes Science Center (GLSC), Eastern Ecological Science Center, and Columbia Environmental Research Center (CERC), and the State University of New York (SUNY) Brockport have conducted in collaboration with partner agencies a cooperative program to monitor thiamine concentrations in lake trout eggs since the late 1990s. In 2022, egg thiamine concentrations were highly variable at each sampling site. No egg samples with thiamine concentrations less than the 4 nmol/g threshold recommended for successful lake trout reproduction were collected in Lakes Superior or Erie. In contrast, sites in Lakes Michigan, Huron, Ontario and Champlain, and Cayuga Lake had some lake trout eggs below 4 nmol/g. Time series of mean lake trout egg thiamine concentrations showed high temporal and spatial variability within the Great Lakes region.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | Organization Series |
| Title | Great Lakes lake trout thiamine monitoring program annual report |
| Year Published | 2022 |
| Language | English |
| Publisher | Great Lakes Fishery Commission |
| Contributing office(s) | Great Lakes Science Center |
| Description | 14 p. |
| Country | Canada, United States |
| Other Geospatial | Great Lakes |
| Google Analytic Metrics | Metrics page |