Journal of Chemical Ecology

, Volume 20, Issue 9, pp 2455–2466

Importance of phenolic glucosides in host selection of shoot galling sawfly,Euura amerinae, onSalix pentandra

  • Jari Kolehmainen
  • Heikki Roininen
  • Riitta Julkunen-Tiitto
  • Jorma Tahvanainen
Article

Abstract

The effects of phenolic glucosides on the oviposition behavior ofEuura amerinae L. (Hymenoptera: Tenthredinidae) were tested in multiple oviposition experiments using different shoot length categories ofSalix pentandra L. (with different amounts of phenolic glucosides) and in experiments with pure phenolic glucosides (salidroside, arbutin, salicin, 90% salicortin, 90% 2′-O-acetylsalicortin) or composite total fractions of phenolic glucosides from three willow species (S. pentandra, S. myrsinifolia Salisb.,S. triandra L.). This was the first time that the effects of pure phenolic glucosides on the oviposition behavior of sawfly species were tested. Total fraction of phenolic glucosides fromS. pentandra and its main individual glucoside, 2′-O-acetyl-salicortin, stimulated the strongest ovipositional behavior inE. amerinae. The results show clearly that females ofE. amerinae can recognize and choose their host willow,S. pentandra, on the basis of phenolic glucosides. Moreover, they are probably able to use phenolic glucosides as a cue in shoot selection within host-plant individuals.

Key words

Herbivory host preference host selection oviposition phenolic glucosides willow Salicaceae Salix galling sawfly Hymenoptera Tenthredinidae Euura amerinae 

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • Jari Kolehmainen
    • 1
  • Heikki Roininen
    • 1
  • Riitta Julkunen-Tiitto
    • 1
  • Jorma Tahvanainen
    • 1
  1. 1.Department of BiologyUniversity of JoensuuJoensuuFinland

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