Abstract

1 We searched for antifeedant activity in predomonantly non-host woody plants to find new compounds for seedling protection of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) against feeding by pine weevil Hylobius abietis. In total, 38 species from 25 families were compared in choice and no-choice tests. 2 In choice tests with Empetrum, Juniperus, Ledum, Populus, Betula, Evonymus, Sorbus, Salix, Myrica and Pinus, the weevils preferred Pinus to all others. In no-choice tests with the same species, the insects removed a similar or even greater area of the bark in three of 10 species than Pinus. The results were clearly different between the test modes. 3 In experiment 4, the areas of outer and inner bark (phloem) removed were quantified separately. The weevils removed significantly less of both outer and inner bark in flex, Evonymus, Populus, Syringa, Taxus, Tilia, Viburnum. Lonicera and Sorbus than Pinus. 4 Large areas of outer bark were removed in Juglans, Fraxinus, Sambucus, Aesculus, Quercus, Corylus, Fagus, Salix, Abuts and Acer. However, in the latter cases the insects stopped when reaching the inner bark. Thus, certain plant species have the outer bark removed by the insects but possessed an inner bark with antifeedant qualities

Keywords

Antifeedant; Curculionidae; feeding deterrent; Hylobius abietis; nonhost

Published in

Agricultural and Forest Entomology
2004, Volume: 6, number: 2, pages: 165-171
Publisher: BLACKWELL PUBL LTD

SLU Authors

• Månsson, Per

  • Department of Crop Science, Swedish University of Agricultural Sciences
    

• Schlyter, Fredrik

  • Department of Crop Science, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Environmental Sciences related to Agriculture and Land-use


Publication identifier

DOI: https://doi.org/10.1111/j.1461-9563.2004.00217.x

Permanent link to this page (URI)

https://res.slu.se/id/publ/2799