Antifeedant and Growth Inhibitory Effects of Sweetflag, Acorus Calamus L. Oil on Peridroma Saucia (Lepidoptera: Noctuidae)

  • Opender Koul
  • Murray B. Isman
Research Article


Essential oil of sweetflag, Acorus calamus L. was fed (in artificial diet) to the variegated cutworm, Peridromo soucia Hubner, to assess its antifeedant and growth inhibitory effects. The oil decreased food consumption and larval growth in a dose-dependent manner in both neonate (first instar) and second instar larvae. Calamus oil applied to cabbage leaf discs significantly inhibited feeding by fourth and fifth instar larvae in a choice test. Nutritional experiments with fourth instar larvae using topical application or dietary exposure confirmed that sweetflag oil induces both antifeedant and growth inhibitory effects in Peridroma saucia, the latter possibly being independent of feeding behaviour.

Key Words

Acorus calamus antifeedant calamus oil growth inhibitor Peridroma saucia 


L’huile essentielle d’Acorus calamus L. (Belle-Angélique) fut incorporée dans la diète artificielle du ver-gris panaché, Peridroma saucia Hübner, pour évaluer ses effets inhibiteurs de l’alimentation et de la croissance. L’huile diminue la consommation de nourriture et la croissance larvaire de manière dépendante de la dose chez les larves de premier et de deuxième stade. L’huile de calamus appliquée sur des disques de feuilles de chou inhibe significativement l’alimentation des larves de quatrième et de cinqième stade larvaire lors de test de choix. Des expériences d’alimentation chez les larves de quatrième stade utilisant de applications de surface ou des expositions à un régime ont confirmé que l’huile de Belle-Angélique induit à la fois des effets inhibiteurs d’alimentation et de croissance chez P. saucia, cette dernière possibilité étant indépendante du comportement alimentaire.


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Copyright information

© ICIPE-ICIPE Science Press 1990

Authors and Affiliations

  • Opender Koul
    • 1
  • Murray B. Isman
    • 1
  1. 1.Department of Plant ScienceUniversity of British ColumbiaVancouverCanada

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