Journal of Chemical Ecology

, Volume 17, Issue 4, pp 767–777

Aversive responses of white-tailed deer,Odocoileus virginianus, to predator urines

  • Robert K. Swihart
  • Joseph J. Pignatello
  • Mary Jane I. Mattina

DOI: 10.1007/BF00994199

Cite this article as:
Swihart, R.K., Pignatello, J.J. & Mattina, M.J.I. J Chem Ecol (1991) 17: 767. doi:10.1007/BF00994199


We tested whether predator odors could reduce winter browsing of woody plants by white-tailed deer (Odocoileus virginianus). Urine from bobcats (Lyra rufus) and coyotes (Canis latrans) significantly reduced browsing of Japanese yews (Taxus cuspidata), and repellency was enhanced when urine was reapplied weekly as a topical spray. Urine of cottontail rabbits (Sylvilagus floridanus) and humans did not reduce damage, suggesting that deer do not respond aversively to odors of nonpredatory mammals or occasional predators with which they lack a long evolutionary association. Bobcat and coyote urine were more effective in tests conducted with eastern hemlock (Tsuga canadensis), which is less palatable to white-tailed deer than Japanese yew. A dichloromethane extract of bobcat urine was as effective as unextracted urine in reducing damage to hemlocks. Testing of the organic components of bobcat urine, particularly the volatile components, may enable identification of the compounds responsible for the repellency we observed.

Key Words

bobcat browsing Canis latrans coyote Lynx rufus Odocoileus virginianus predator urine repellent semiochemicals white-tailed deer wildlife damage Taxus cuspidata Tsuga canadensis 

Copyright information

© Plenum Publishing Corporation 1991

Authors and Affiliations

  • Robert K. Swihart
    • 1
  • Joseph J. Pignatello
    • 2
  • Mary Jane I. Mattina
    • 3
  1. 1.Department of Plant Pathology and EcologyThe Connecticut Agricultural Experiment StationNew Haven
  2. 2.Department of Soil and WaterThe Connecticut Agricultural Experiment StationNew Haven
  3. 3.Department of Analytical ChemistryThe Connecticut Agricultural Experiment StationNew Haven

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