The influence of phenolic compounds on the suitability of three Salix species as hosts for the willow beetle Phratora vulgatissima |
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| Authors: | M. T. Kelly and J. P. Curry |
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| Affiliation: | (1) Department of Environmental Resource Management, Faculty of Agriculture, University College, Belfield, 4 Dublin, Ireland |
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| Abstract: | The phenolic glycosides salicin and salicortin were found to influence larval growth and development rates and adult feeding preference of Phratora vulgatissima in laboratory feeding studies. Salicortin was more toxic to larvae than salicin, and none of the third instar larvae fed on Salix viminalis leaves amended with 1.52% (fresh mass) salicortin pupated. Condensed tannins (proanthocyanadins) did not affect larval performance. It was concluded that Salix burjatica resistance to willow beetle is due to the high levels of salicortin which occur in leaves of this species. |
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| Keywords: | Willow beetle Phratora vulgatissima Salix spp host plant resistance condensed tannins salicin salicortin feeding larval performance |
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