title: Concentrations and hazard assessment of organochlorine contaminants and mercury in smallmouth bass from a remote lake in the Upper Peninsula of Michigan.
abstract: Concentrations of PCBs, DDTs, toxaphene, chlordanes, dieldrin, and mercury were determined in smallmouth bass (Micropterus dolomieui) collected from Fumee Lake, a remote lake in the Upper Peninsula of Michigan. An ecological hazard assessment was conducted to determine potential impacts of contaminants on bald eagles and mink eating fish from this lake. Concentrations of organochlorines, except toxaphene, and mercury in smallmouth bass were similar to those found in fish from Lake Superior, where atmospheric inputs are the primary sources. Bioaccumulation was indicated by a positive correlation between fish weight and contaminant concentrations for organochlorines, while mercury concentrations did not appear to correspond predictably to body weight. Concentrations of mercury and PCBs in smallmouth bass were sufficiently great to be of concern regarding their consumption by eagles or mink.
authors.affiliation: Pesticide Research Center, Michigan State University, East Lansing, Michigan 48824-1222, USA.
authors.forename: K S
authors.initials: KS
authors.lastname: Henry
authors.forename: K
authors.initials: K
authors.lastname: Kannan
authors.forename: B W
authors.initials: BW
authors.lastname: Nagy
authors.forename: N R
authors.initials: NR
authors.lastname: Kevern
authors.forename: M J
authors.initials: MJ
authors.lastname: Zabik
authors.forename: J P
authors.initials: JP
authors.lastname: Giesy
mesh_terms: D000818:Animals; D001492:Bass; D001835:Body Weight / Q000187:drug effects; D002706:Chlordan / Q000032:analysis / Q000633:toxicity; D003634:DDT / Q000032:analysis / Q000633:toxicity; D004781:Environmental Exposure; D005506:Food Contamination / Q000032:analysis*; D005618:Fresh Water / Q000737:chemistry*; D007306:Insecticides / Q000032:analysis*; D017669:Mercury Compounds / Q000032:analysis*; D008824:Michigan; D018570:Risk Assessment; D014481:United States; D014486:United States Food and Drug Administration; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007306:Insecticides; D017669:Mercury Compounds; D014874:Water Pollutants, Chemical; D002706:Chlordan; D003634:DDT