title: Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in muscle and eggs of salmonid fishes from the Great Lakes.
abstract: Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were measured in dorsal muscle and eggs of coho salmon, lake trout, and chinook salmon collected from Lakes Superior, Michigan, and Huron (Michigan waters). Absolute and relative concentrations of PCDDs and PCDFs varied among sampling locations (inter- and intralake) and fish species. Fish collected from Bay City (Saginaw Bay) contained the greatest concentrations of PCDDs and PCDFs both in muscle and eggs. Among the three fish species, chinook salmon accumulated greater concentrations than did coho salmon or lake trout. Concentrations of PCDFs were greater than those of PCDDs in all fishes. OCDF and TCDF were the predominant congeners of PCDF, whereas OCDD and TCDD concentrations predominated in PCDDs. Homolog compositions of PCDDs and PCDFs suggested the existence of multiple local sources in various locations. Concentrations of PCDDs and PCDFs in eggs of fishes were significantly correlated with those in muscle.
authors.affiliation: Department of Zoology, National Food Safety and Toxicology Center, Institute of Environmental Toxicology, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Giesy
authors.forename: K
authors.initials: K
authors.lastname: Kannan
authors.forename: J A
authors.initials: JA
authors.lastname: Kubitz
authors.forename: L L
authors.initials: LL
authors.lastname: Williams
authors.forename: M J
authors.initials: MJ
authors.lastname: Zabik
mesh_terms: D000818:Animals; D001572:Benzofurans / Q000032:analysis*; D004531:Eggs / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006114:Great Lakes Region; D009132:Muscles / Q000737:chemistry*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D012487:Salmonidae / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D001572:Benzofurans; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants