Comparison of Phenylacetates with Benzoates and Phenylpropanoates as Antifeedants for the Pine Weevil, Hylobius abietis

Abstract

This study concludes an extensive investigation of antifeedants for the pine weevil, Hylobius abietis (Coleoptera: Curculionidae), an economically important pest of planted conifer seedlings. Building on the previously reported antifeedant effects of benzoates and phenylpropanoids (aromatic compounds with one- or three-carbon-atom substituents on the benzene ring), we here report the antifeedant effects of compounds with two-carbon-atom side chains (i.e., phenylacetates). We also present new results; the best antifeedants from the benzoate class were tested at 10-fold lower concentrations in order to find the optimal antifeedants. Generally, for all three compound classes, efficient antifeedants were found to have one or two methyl, chloro, or methoxy substituents on the aromatic ring. For monosubstituted phenylpropanoids, the substituent preferably should be in the para-position. In the search for synergistic antifeedant effects among the three compound classes, combinations of compounds from the three classes were tested in binary and ternary mixtures.

Keywords

pine weevil; Hylobius abietis; synergism; conifer-seedling protection; feeding deterrent; structure activity relationships

Published in

Journal of Agricultural and Food Chemistry
2018, Volume: 66, number: 44, pages: 11797-11805 Publisher: AMER CHEMICAL SOC

SLU Authors

• Nordlander, Göran

  • Department of Ecology, Swedish University of Agricultural Sciences
    

Associated SLU-program

SLU Plant Protection Network


UKÄ Subject classification

Agricultural Science


Publication identifier

DOI: https://doi.org/10.1021/acs.jafc.8b03830

Permanent link to this page (URI)

https://res.slu.se/id/publ/97202