Abstract
The primary and secondary toxicity of warfarin, sodium monofluoroacetate (Compound 1080), and methyl parathion were assessed in the mink, a representative surrogate mammalian wildlife carnivore. In a 28-day test, a LC50 value for mink fed warfarinper se (primary toxicity) was calculated to be 11.7 ppm (mg/kg) with a 95% confidence interval of 9.2 to 15.0 ppm (mg/kg) and a slope of 2.03. Feeding mink warfarin-contaminated rabbit (minus digestive tract contents) incorporated into diets to provide warfarin residue levels equivalent to the warfarin concentrations fed in the LC50 primary toxicity test did not produce secondary toxicity, suggesting that warfarin may be readily bound and/or metabolized into non-, or less-toxic metabolites by a primary consumer. Toxic residues of sodium monofluoroacetate for mink (as in secondary toxicity) were not produced in rabbits fed a lethal dose of this compound when the gastrointestinal tract contents were removed from the rabbit carcasses. These results suggested that reports of secondary toxicity from sodium monofluoroacetate may be primarily due to consumption of the unmetabolized compound from the gut of prey species. Attempts to produce primary and secondary toxicity in mink by feeding methyl parathionper se (primary toxicity) or via contaminated rabbit (containing the gastrointestinal tract contents), as in secondary toxicity, were unsuccessful, as the mink rejected the methyl parathion-treated diets.
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References
AOAC (1984) Warfarin in rodenticides; Spectrophotometric method. In: S Williams (ed) Official Methods of Analysis of the Association of Official Analytical Chemists. Assoc Offic Anal Chem, Arlington, VA p 149
Aulerich RJ, Ringer RK (1977) Current status of PCB toxicity to mink and effects on their reproduction. Arch Environ Contain Toxicol 6:279–292
— (1979) Toxic effects of dietary polybrominated biphenyls on mink. Arch Environ Contam Toxicol 8:487–498
Aulerich RJ, Bursian SJ, Breslin WJ, Olson BA, Ringer RK (1985) Toxicological manifestations of 2,4,5,2′,4′,5′-, 2,3,6,2′,3′,6′-, and 3,4,5,3′,4′,5′-hexachlorobiphenyl and Aroclor® 1254 in mink. J Toxicol Environ Health 15:63–79
Aulerich RJ, Ringer RK, Safronoff J (1986) Assessment of primary versus secondary toxicity of Aroclor® 1254 to mink. Arch Environ Contam Toxicol 15:393–399
Banfield C, Rowland M (1984) Stereospecific fluorescence high-performance liquid chromatographic analysis of warfarin and its metabolites in plasma and urine. J Pharm Sci 73:1392–1396
Bleavins MR, Aulerich RJ, Ringer RK (1980) Polychlorinated biphenyls (Aroclors® 1016 and 1242): Effects on survival and reproduction in mink and ferrets. Arch Environ Contain Toxicol 9:626–635
— (1984) Effects of chronic dietary hexachlorobenzene exposure on the reproductive performance and survivability of mink and European ferrets. Arch Environ Contam Toxicol 13:357–365
Casper HH, McMahan TL, Paulson GD (1985) Determination of fluoroacetate residues in animal tissues by capillary gas chromatography/mass spectrometry. J Assoc Offic Anal Chem 68:722–725
Evans J, Ward AL (1967) Secondary poisoning associated with anticoagulant-killed nutria. J Am Vet Med Assoc 151:856–861
Fanshier DW, Gottwald LK, Kun E (1964) Studies on specific enzyme inhibitors. VI. Characterization and mechanism of action of the enzyme inhibitory isomer of monofluorocitrate. J Biol Chem 239:425–434
Gill JL (1978) Design and Analysis of Experiments in the Animal and Medical Sciences, Vol 1. Iowa State Univ Press, Ames, IA, 409 pp
Grue CE, Fleming WJ, Busby DG, Hill EF (1983) Assessing hazards of organophosphate pesticides to wildlife. Trans 48th N Am Wildl Nat Res Conf 1983, Washington DC, pp 200–220
Hayes WJ, Gaines TB (1950) Control of Norway rats with residual rodenticide warfarin. Pub Health Rep 65:1537–1555
Hegdal PL, Gatz TA, Fite EC (1981) Secondary effects of rodenticides on mammalian predators. In: Chapman JA, Pursley D (eds) Worldwide Furbearer Conference Procedures. Frostburg MD, Aug 3–11 1980, Vol III, pp 1781–1793
Hegdal PL, Fagerstone KA, Gatz TA, Glahn JF, Matschke GH (1986) Hazards to wildlife associated with 1080 baiting for California ground squirrels. Wildl Soc Bull 14:11–21
Hill EF, Heath RG, Spann JW, Williams JD (1975) Lethal dietary toxicities of environmental pollutants to birds. US Fish and Wildlife Service. Spec Sci Rept-Wildl #191, Washington DC, 61 pp
Hornshaw TC, Aulerich RJ, Johnson HE (1983) Feeding Great Lakes fish to mink: Effects on mink and accumulation and elimination of PCBs by mink. J Toxicol Environ Health 11:933–946
Hornshaw TC (1984) Development of dietary LC50 and reproduction test protocols using mink and ferrets as representative mammalian carnivores. PhD Thesis Mich State Univ, E Lansing MI, 212 pp
Hornshaw TC, Ringer RK, Aulerich RJ (1986a) Toxicity of sodium monofluoroacetate (Compound 1080) to mink and European ferrets. Environ Toxicol Chem 5:213–223
Hornshaw TC, Safronoff J, Ringer RK, Aulerich RJ (1986b) LC50 test results in PCB-fed mink: Age, season, and diet comparisons. Arch Environ Contam Toxicol 15:717–723
Litchfield JT Jr, Wilcoxon F (1949) A simplified method of evaluating dose-effect experiments. J Pharmacol Expt Therap 96:99–113
Mendelssohn H, Paz U (1977) Mass mortality in birds of prey caused by azodrin, an organophosphorus insecticide. Biol Conserv 11:163–170
Miller EP (1983) Organophosphate toxicity in domestic animals: Acute toxicity. Vet Med/Small Anim Clin 78:482, 487–488
Morrison JF, Peters RA (1954) The biochemistry of fluoroacetate poisoning: The effect of fluorocitrate on purified aconitase. Biochem J 58:473–479
Okuno I, Meeker DL (1980) Gas-liquid chromatographic determination of sodium fluoroacetate (Compound 1080). J Assoc Offic Anal Chem 63:49–55
Prier RF, Derse PH (1962) Evaluation of the hazard of secondary poisoning by warfarin-poisoned rodents. J Am Vet Med Assoc 140:351–354
Schafer EW Jr, Bowles WA Jr, Hurlbut J (1983) The acute oral toxicity, repellency, and hazard potential of 998 chemicals to one or more species of wild and domestic birds, Arch En viron Contam Toxicol 12:355–382
Stone WB, Overmann SR, Okoniewski JC (1984) Intentional poisoning of birds with parathion. The Condor 86:333–336
US Environmental Protection Agency (1975) Initial scientific and mini-economic review of methyl parathion. US Environmental Protection Agency, Office of Pesticide Programs, Washington DC, EPA-540/1-75-004, pp 48–83
Wood JE (1965) Response of rodent populations to controls. J Wildl Manage 29:425–438
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This publication is the result of work supported by the U.S. Environmental Protection Agency, Environmental Research Laboratory, Corvallis, OR under Cooperative Agreement CR810785 and published with the approval of the Michigan Agricultural Experiment Station as Journal Article No 12054.
This research has not been subject to review by EPA personnel and, therefore, does not necessarily reflect the views of that agency and no official endorsement should be inferred.
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Aulerich, R.J., Ringer, R.K. & Safronoff, J. Primary and secondary toxicity of warfarin, sodium monofluoroacetate, and methyl parathion in mink. Arch. Environ. Contam. Toxicol. 16, 357–366 (1987). https://doi.org/10.1007/BF01054954
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DOI: https://doi.org/10.1007/BF01054954