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Microcystin Toxicity to Mayfly Spp Larvae

This project assesses biochemical stress responses including oxidative  damage and changes in antioxidant defenses in Hexagenia as a function  of microcystin (MC) exposure.    Toxicity of MCs to Hexagenia will be characterized by protein  phosphatase activity, a target enzyme in MC toxicity, under controlled  laboratory conditions of Hexagenia nymphs raised in standardized  reference sediment (SRS) and SRS containing a concentration gradient  of the MC- LR variant, the most toxic of the MC from Microcystis  aerugenosa.    Microcystis is the most common cyanobacteria found in Lake Erie  blooms. We will measure levels of MC toxin in Lake Erie sediments  during cyanobacteria blooms from their onset through decline and  compare these measurements with body burdens in nymphs residing in  these sediments.    (HAB): (HAB's); (HABs); (harmful algal bloom); (harmful algal blooms);  (algal bloom); (algal blooms); (eutrophication); (cyanobacteria);  (microcystin); (microcystis); (Hexagenia); (sediment); (sediments);  (Lake Erie); (Microcystis aerugenosa)

Status
In progress
Type
Project
Start Date
End Date
Researchers
Gary WinstonPrincipal Investigator
Associated with 1 projects
Agencies
Lake Erie Protection Fund $ 15,000.00USDEstimates

Funding 6 projects for a total of $45,001.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Biochemical
Organism
Physical/Chemical
Lake Basin Connecting Channels
Lake Erie
State Province
Ohio
Annex Numbers
Persistent Toxic Substances
Research & Development

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