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Journal of Chemical Ecology

, Volume 21, Issue 9, pp 1375–1386 | Cite as

Effects ofneo-clerodane diterpenes fromTeucrium on feeding behavior of colorado potato beetle larvae

  • Félix Ortego
  • Benjamín Rodríguez
  • Pedro Castañera
Article

Abstract

Treatment of potato leaf disks with fourneo-clerodane diterpenes fromTeucrium (eriocephalin, teucrin-A, teucvin, and teuscorolide) significantly reduced feeding by larvae ofLeptinotarsa decemlineata (Colorado potato beetle). Choice and no-choice tests suggest that teuscorolide acts as a feeding deterrent, whereas the antifeedant activity of teucrin-A, teucvin, and eriocephalin is likely associated with a toxic mode of action. Nutritional tests, antifeedant simulation assays, and posttreatment studies confirmed that teucrin-A can be categorized by its mode of action as a toxin, rather than as a feeding deterrent.

Key Words

Leptinotarsa decemlineata Colorado potato Beetle Teucrium Clerodane diterpenes feeding behavior antifeedants toxins feeding deterrents 

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • Félix Ortego
    • 1
  • Benjamín Rodríguez
    • 2
  • Pedro Castañera
    • 1
  1. 1.Centro de Investigaciones BiológicasCSICMadridSpain
  2. 2.Instituto de Química OrgánicaCSICMadridSpain

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