Journal of Chemical Ecology

, Volume 33, Issue 5, pp 1013–1023

Foliar Phenolics are Differently Associated with Epirrita autumnata Growth and Immunocompetence

Authors

    • Section of Ecology, Department of BiologyUniversity of Turku
  • Lauri Kapari
    • Section of Ecology, Department of BiologyUniversity of Turku
  • Vladimir Ossipov
    • Department of ChemistryUniversity of Turku
  • Markus J. Rantala
    • Section of Ecology, Department of BiologyUniversity of Turku
  • Teija Ruuhola
    • Section of Ecology, Department of BiologyUniversity of Turku
  • Erkki Haukioja
    • Section of Ecology, Department of BiologyUniversity of Turku
Article

DOI: 10.1007/s10886-007-9271-8

Cite this article as:
Haviola, S., Kapari, L., Ossipov, V. et al. J Chem Ecol (2007) 33: 1013. doi:10.1007/s10886-007-9271-8

Abstract

The quality of available food may affect insect herbivores directly (via growth and survivorship) and/or indirectly (by modifying insect vulnerability to parasitoids and pathogens). We examined the relationship between different phenolic compounds, belonging to various phenolic groups, in Betula pubescens spp. czerepanovii (mountain birch) foliage and the larval performance of the geometrid Epirrita autumnata (autumnal moth). Direct effects on insect performance were described by pupal weight, developmental rate, and survivorship; indirect effects were described by the encapsulation rate of an implant inserted into the insect hemocoel, a commonly used way to describe insect immune defense. We found profound differences in the effects of different phenolic categories: several individual hydrolyzable tannins were associated positively with larval performance but negatively with level of immune defense, whereas flavonoid glycosides were inversely related to larval survival but showed no association with the larvae immune defense.

Keywords

Secondary compoundsTritrophic interactionsDirect and indirect defenseImmunocompetenceEncapsulation

Copyright information

© Springer Science+Business Media, LLC 2007