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Cottontails and gopherweed: Anti-feeding compounds from a spurge

  • Dietland Müller-Schwarze
  • José Giner
Conference paper
  • 541 Downloads

Abstract

Mammalian herbivores nearly never attack gopherweed, Euphorbia lathyris (Euphorbiaceae). To find the chemical principle responsible for the deterrent effect, we field-tested plant extracts in response-guided bioassays for antifeedant activity. We treated winter-dormant apple twigs with extract solutions and presented them to free-ranging eastern cottontails, Sylvilagus floridanus, at 3 different home ranges in Upstate New York during late winter. Extracts from all plant parts reduced feeding, measured as twig tips cut and amount of bark removed, but root extracts were most active. The bioassay led to isolation of putative antifeedant compounds from the root extract, a series of long-chain alkyl ferulates and gopherenediol, a new diterpenoid. Bioassay of docosanyl ferulate and gopherenediol demonstrated weak antifeedant activity. The bioassays are continuing.

Keywords

Home Range Root Extract Mammalian Herbivore Leafy Spurge Ferulate Medium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Dietland Müller-Schwarze
    • 2
  • José Giner
    • 1
  1. 1.Department of Chemistry, College of Environmental Science and ForestryState University of New YorkSyracuse
  2. 2.Department of Environmental and Forest Biology, College of Environmental Science and ForestryState University of New YorkSyracuse

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