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Rodenticidal effects of zinc phosphide and strychnine on nontarget species

Informally Refereed
Download (PDF 654 KB): https://research.fs.usda.gov/download/treesearch/61494.pdf

Abstract

When three rodenticide treatments - zinc phosphide (prebaited) and strychnine (both with and without prebait) - were evaluated, zinc phosphide was the most effective in reducing active burrows of prairie dogs; but, it also resulted in a reduction in deer mouse densities. One month after treatment, counts of fecal pellets of eastern cottontails were greater on areas treated with strychnine without prebait than on sites treated with zinc phosphide. Eight months after treatment, no differences could be detected among rodenticides for either leporid. Horned lark densities were reduced 61% on sites treated with strychnine only.

Parent Publication

Citation

Uresk, Daniel W.; King, Rudy M.; Apa, Anthony D.; Deisch, Michele S.; Linder, Raymond L. 1988. Rodenticidal effects of zinc phosphide and strychnine on nontarget species. In: Uresk, Daniel W.; Schenbeck, Greg L.; Cefkin, Rose, technical coordinators. Eighth Great Plains wildlife damage control workshop proceedings. Gen. Tech. Rep. RM-GTR-154. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. p. 57-63.