title: Non-linear radionuclide transfer from the aquatic environment to fish.
abstract: Uptake of 226Ra, 232Th, 230Th, and 228Th from water, sediment, and diet sources to bone and muscle of white suckers (Catostomus commersoni) was studied in sixteen lakes in the uranium-mining district of Ontario, Canada. Fish tissues did not increase linearly with environmental concentrations. The best relationship appears to be a power function. This has implications for the accuracy of radiological dose and risk estimates for uranium mining impacts, which are often based on a linear model.
authors.affiliation: Department of Biology, University of Saskatchewan, Saskatoon, Canada.
authors.forename: G G
authors.initials: GG
authors.lastname: Pyle
authors.forename: F V
authors.initials: FV
authors.lastname: Clulow
mesh_terms: D000818:Animals; D003531:Cypriniformes / Q000378:metabolism*; D004784:Environmental Monitoring; D005507:Food Contamination, Radioactive; D005618:Fresh Water / Q000737:chemistry; D006283:Health Physics; D006801:Humans; D008906:Mining; D017711:Nonlinear Dynamics; D009864:Ontario; D011853:Radiobiology; D011868:Radioisotopes / Q000032:analysis / Q000493:pharmacokinetics*; D018570:Risk Assessment; D014501:Uranium; D014875:Water Pollutants, Radioactive / Q000032:analysis / Q000493:pharmacokinetics*
chemical_list: D011868:Radioisotopes; D014875:Water Pollutants, Radioactive; D014501:Uranium