STP707

    Assimilation Efficiency and Clearance of Trichlorobenzenes in Rainbow Trout

    Published: Jan 1980


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    Abstract

    A unique experimental approach has been applied to a study of the bioaccumulation dynamics in rainbow trout fed a single meal containing trichlorobenzenes (TCBs). The technique involves the incorporation of a radioactive chemical marker in the diet, in addition to the chemical of interest (TCB). The marker chemical permits an estimate to be made of the assimilation efficiency of TCB in food. The assimilation efficiency can then be used, in conjunction with a series of direct analyses for TCB body burdens, to describe tissue clearance dynamics in terms of individual fish.

    Trout given a pulse dose meal containing 50 ppm TCB assimilated approximately 61 percent of the chemical. Individual fish were capable of clearing more than 90 percent of the TCB sequestered in their tissues within 174 h after dosing.

    Keywords:

    aquatic toxicology, bioaccumulation, trichlorobenzenes (TCBs), rainbow trout, chemical marker, assimilation efficiency, clearance


    Author Information:

    Smith, AD
    Research associate, Department of Biology; associate professor, Faculty of Science; associate professor, Department of Chemistry; and professor, Department of Biology, Lakehead University, Thunder Bay, Ontario

    Griffith, TJ
    Research associate, Department of Biology; associate professor, Faculty of Science; associate professor, Department of Chemistry; and professor, Department of Biology, Lakehead University, Thunder Bay, Ontario

    Orr, DE
    Research associate, Department of Biology; associate professor, Faculty of Science; associate professor, Department of Chemistry; and professor, Department of Biology, Lakehead University, Thunder Bay, Ontario

    Ozburn, GW
    Research associate, Department of Biology; associate professor, Faculty of Science; associate professor, Department of Chemistry; and professor, Department of Biology, Lakehead University, Thunder Bay, Ontario


    Paper ID: STP27419S

    Committee/Subcommittee: E35.30

    DOI: 10.1520/STP27419S


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