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Evaluation of the Hazard of Microcystis Blooms for Human Health through Fish Consumption

A method was established and fish concentrations were measured for   fish of opportunity collected from Lake Erie by the Ohio Department   of Natural Resources through the summer of 2  5. The concentrations   in fish (walleye and yellow perch), were low ( . 3 -  .45 ng g -1)   wet muscle tissue. These concentrations would have led to exposures   that were substantially lower than the  . 4 µg kg -1 d -1 that is   set by the World Health Organization for chronic exposure based on a   meal size of 3   g. The reason for the low values was thought to   result from the absence of a Microcystis bloom during the summer of   2  5. The liver concentrations in fish were much higher (4 - 33 ng   g -1) wet weight suggesting that the fish do get exposed to the   microcystin toxin. The sampling after 2  5 has been more extensive   covering Lake Erie, Saginaw Bay (Lake Huron) and three inland lakes   (Gull Lake, Spring Lake, and Muskegon Lake) during June thru   September to help insure that fish would be collected from areas   with high Microcystis blooms. The inland lakes exhibited relatively   high concentrations of microcystin toxin in July. The concentrations   in the fish are currently undergoing analysis.    (microcystin); (microcystis); (bloom); (blooms): (toxin); (algal   bloom); (toxins); (algal blooms); (Lake Erie); (Lake Huron); (human   health); (fish consumption)

In progress
Start Date
End Date
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Impact of Pollutants
Nutrients, Including Phosphorus
Resource Management
Lake Basin Connecting Channels
Lake Erie
Lake Huron
Resource Being Monitored
Human Health
Plankton / Microorganisms
Beneficial Use Impairment Assessments
Degradation of Aesthetics
Eutrophication or Undesirable Algae
Loss of Fish and Wildlife Habitat
Restrictions of Fish and Wildlife Consumption
Tainting of Fish and Wildlife Populations
Socio-economic Consideration and Analysis
Human Health Aspects
Annex Numbers
Research & Development
Annex 17
Population-based studies on long-term, low-level effects of toxic substances on human health
  • Annex Numbers
    Annex Numbers
    Research & Development
  • Annex 17
    Annex 17
    Population-based studies on long-term, low-level effects of toxic substances on human health

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