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Trends In Mirex Concentration In Lake Ontario Salmonines And Sediments, Hilary L. Richardson Sep 2004

Trends In Mirex Concentration In Lake Ontario Salmonines And Sediments, Hilary L. Richardson

Environmental Science and Ecology Theses

Chinook (Oncorhynchus kisutch) and coho (0. tshawytscha) salmon and sediment cores collected from Lake Ontario during the summer and fall of 2003 were subsequently analyzed for mirex and photomirex. Mirex in fish tissue ranged from 0.011 mg/kg to 0.094 mg/kg (mean 0.048 mg/kg). Photomirex in fish ranged from 0.005 mg/kg to 0.045 mg/kg (mean 0.020 mg/kg). Analysis of variance (ANOVA) was performed to test for differences between mirex concentrations among all sampling years. A significant difference occurred between all sampling years (p=0.000). Temporal trends ...