Journal of Chemical Ecology

, Volume 12, Issue 6, pp 1319–1328

Plant allelochemicals and insect parasitoids effects of nicotine onCotesia congregata (say) (Hymenoptera: Braconidae) andHyposoter annulipes (Cresson) (Hymenoptera: Ichneumonidae)


  • P. Barbosa
    • Department of EntomologyUniversity of Maryland
  • J. A. Saunders
    • Tobacco LaboratoryBeltsville Agricultural Research Center USDA
  • J. Kemper
    • Department of EntomologyUniversity of Maryland
  • R. Trumbule
    • Department of EntomologyUniversity of Maryland
  • J. Olechno
    • Department of BotanyUniversity of California
  • P. Martinat
    • Department of EntomologyUniversity of Maryland

DOI: 10.1007/BF01012351

Cite this article as:
Barbosa, P., Saunders, J.A., Kemper, J. et al. J Chem Ecol (1986) 12: 1319. doi:10.1007/BF01012351


Parasitoids developing within tobacco hornworms or fall army-worms exhibit significant differences in development and survival depending on whether their hosts fed on nicotine-free or nicotine-containing diets. The effects of nicotine were more severe on the relatively less adapted parasitoid,H. annulipes than the specialist parasitoid,Cotesia congregata. Labeled alkaloid originally placed in herbivore diet was incorporated in several parasitoid tissues. These results suggest that interactions between plant allelochemicals and parasitoids should be considered in the development of theory on insect herbivory and plant defense.

Key Words

Plant allelochemicalparasitoidsthree trophic level interactionsnicotineManduca sextaLepidopteraSphingidaeSpodoptera frugiperdaNoctuidaeCotesia congregataHymenopteraBraconidaeHyposoter annulipesIchneumonidae

Copyright information

© Plenum Publishing Corporation 1986