STP1055

    Evaluation of Some Radioisotopes as Marking Agents for Monitoring Bait Consumption

    Published: Jan 1989


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    Abstract

    Minute quantities (1 to 20 μCi) of six gamma-emitting radioisotopes, manganese-54, zinc-65, selenium-75, iodine-125, iodine-131, and cesium-134, incorporated into nontoxic baits were found suitable as marking agents to detect bait consumption by coyotes (Canis latrans). The small quantity of isotope required minimizes detection of the marker by coyotes and potentially provides a bias-free procedure for simultaneously comparing the relative efficiency of several bait delivery techniques. Presence and identity of specific markers were determined with a multichannel analyzer on the basis of the energy level of emitted radiation. Differences in relative distribution of these isotopes among body tissues were noted. Other potential applications and constraints are discussed.

    Keywords:

    baiting, Canis latrans, coyote, oral markers, radioisotopes, Mn-54, Zn-65, Se-75, I-125, I-131, Cs-134


    Author Information:

    Knowlton, FF
    Wildlife biologist, Denver Wildlife Research Center, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Utah State University, Logan, UT

    Stoddart, LC
    Wildlife biologist, Denver Wildlife Research Center, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Utah State University, Logan, UT

    Crabtree, RL
    Graduate research assistant, University of Idaho, Moscow, ID

    Blatt, JW
    Graduate research assistant, Central Washington University, Ellensburg, WA


    Paper ID: STP25261S

    Committee/Subcommittee: E35.17

    DOI: 10.1520/STP25261S


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