Journal of Chemical Ecology

, Volume 14, Issue 1, pp 319–334

Response of generalist and specialist insects to qualitative allelochemical variation

Authors

  • M. Deane Bowers
    • Museum of Comparative ZoologyHarvard University
  • Gillian M. Puttick
    • Museum of Comparative ZoologyHarvard University
Article

DOI: 10.1007/BF01022549

Cite this article as:
Deane Bowers, M. & Puttick, G.M. J Chem Ecol (1988) 14: 319. doi:10.1007/BF01022549

Abstract

We examined the effects of a set of four biosynthetically related iridoid glycosides, aucubin, catalpol, loganin, and asperuloside, on larvae of a generalist,Lymantria dispar (Lymantriidae), the gypsy moth, and an adapted specialist, the buckeye,Junonia coenia (Nymphalidae). In general,L. dispar grew and survived significantly less well on artificial diets containing iridoid glycoside, compared to a control diet without iridoid glycosides. In choice tests, previous exposure to a diet containing iridoid glycosides caused larvae subsequently to prefer iridoid glycoside-containing diets even though they were detrimental to growth and survival. In contrast,J coenia larvae grew and survived better on diets with aucubin and catalpol, the two iridoid glycosides found in the host plantPlantago lanceolata (Plantaginaceae), than on diets with no iridoid glycoside or with loganin and asperuloside. The results of choice tests of diets with and without iridoid glycosides and between diets with different iridoid glycosides reflected these differences as well. These results are discussed in terms of (1) differences between generalists and specialists in their response to qualitative variation in plant allelochemical content, (2) the induction of feeding preferences, and (3) the evolution of qualitative allelochemical variation as a plant defense.

Key words

Iridoid glycosideJunonia coeniaLymantria disparLepidopteraNymphalidaeLymantriidaeinductioninsect-plant interactiongeneralist herbivorespecialist herbivore

Copyright information

© Plenum Publishing Corporation 1988