Thiamine (vitamin B1) has major impacts on survival of embryonic and early life stages of fish. Low levels of thiamine, a water-soluble vitamin, in eggs have been responsible for early mortality syndrome (EMS) in salmonids from the lower Great Lakes (Marcquenski, 1996), Cayuga syndrome in Atlantic salmon Salmo salar from the Finger Lakes region (Fisher et al., 1995), and M74 (another EMS-like cause of mortality) in Baltic Sea salmon (Bengtsson et al., 1994). Fisher et al. (1996) concluded that the increase in salmonid alevins mortality from Cayuga Lake was directly linked to broodfish diets consisting only of alewife Alosa pseudoharengus and rainbow smelt Osmerus mordax. These two nonindigenous species, as dominant forage fishes in Cayuga Lake, contain thiaminase, an enzyme that destroys thiamine (Fisher et al., 1995, 1996). Similar conclusions were drawn by Fitzsimons and Brown (1998) with respect to lake trout Salvelinus namaycush in the Great Lakes. Alewife and rainbow smelt also have been reported to be the main prey of walleye in northern Lake Michigan (Madenjian et al., 2 2) and the western basin of Lake Erie (Morrison et al., 2 ), leading to the potential that walleye Stizostedion vitreum could suffer EMS.
- Sources and Impacts of "Naturalized" Escherichia coli in Coastal Environments
- Structure and function of sea lamprey pheromone components (Phase II)
- Larval Pacific herring, Clupea pallasii (Valenciennes), are highly susceptible to viral haemorrhagic septicaemia and survivors are partially protected after their metamorphosis to juveniles
- Assessing Whether Exposure to Low Levels of Estrogen Whose Biological Actions Mimic that of Effluent from Great Lakes Sewage Treatment Plants Poses a Threat to the Reproductive Health of Fish
- Genetic population structure of marine viral haemorrhagic septicaemia virus (VHSV)
- Use of Fathead Minnows cDNA Microarrays to Screen for Estrogenic and Androgenic Chemicals in Surface Waters
- Effect of a fishmeal-free diet on the growth and PCB levels of freshwater shrimp in Ohio
- Reversible Inhibition of Spreading of In Vitro Infection and Imbalance of Viral Protein Accumulation at Low pH in Viral Hemorrhagic Septicemia Rhabdovirus, a Salmonid Rhabdovirus
- Weevil Attractants Released by Eurasian Watermilfoil
- Identification of Small Molecular Weight Factors that Bind HeavyMetals in Algae
General
Annex
General
- Scope of Study
Scope of StudyField InvestigationLaboratory Investigation
- Scale of Phenomena
Scale of PhenomenaCommunityPopulation
- Impact of Pollutants
- Processes
- Land Use and Habitat
- Resource Management
- Socio-Economic
- State / Province
State ProvinceOhio
- Lake Basin / Connecting Channels
Lake Basin Connecting ChannelsLake Erie
Monitoring
Aquatic Nuisance Species
Annex
- Annex Numbers
Annex NumbersResearch & Development
- Annex 17
Annex 17Impact of water quality and AIS on fish and wildlife populations and habitatsMass transfer of pollutants between GL Basin Ecosystem components