Effects of elevated carbon dioxide and ozone on aphid oviposition preference and birch bud exudate phenolics
The effect of atmospheric change on birch aphid (Euceraphis betulae Koch) oviposition preference was examined and plant characteristics that are possibly responsible for the observed effects were investigated. It was hypothesized that the increasing concentrations of CO₂ and O₃ affect singly or in c...
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Published in | Global change biology Vol. 12; no. 9; pp. 1670 - 1679 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Oxford, UK : Blackwell Publishing Ltd
01.09.2006
Blackwell Publishing Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | The effect of atmospheric change on birch aphid (Euceraphis betulae Koch) oviposition preference was examined and plant characteristics that are possibly responsible for the observed effects were investigated. It was hypothesized that the increasing concentrations of CO₂ and O₃ affect singly or in combination the oviposition of birch aphids via changes in host plant characteristics. Two genotypes of field-growing silver birch (Betula pendula Roth) trees (clones 4 and 80), which were exposed to doubled ambient concentration of CO₂ and O₃, singly and in combination, in a 3-year open-top chamber experiment, were used in an aphid oviposition preference test. It was found that elevated CO₂, irrespective of ozone concentration, increased the number of aphid eggs laid on clone 4, but not in clone 80. Several flavonoid aglycones were identified from the exudate coating of birch buds. Although elevated CO₂ and O₃ affected these phenolic compounds in clone 4, the effects did not correlate with the observed changes in aphid oviposition. It is suggested that neither bud length, which was not affected by the treatments, nor surface exudate phenolics mediate birch aphid oviposition preference. |
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Bibliography: | http://dx.doi.org/10.1111/j.1365-2486.2006.01226.x ark:/67375/WNG-SLF6PG0M-N istex:847977B22994E6A9CC2CA20489BA16E986B31747 ArticleID:GCB1226 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 1354-1013 1365-2486 |
DOI: | 10.1111/j.1365-2486.2006.01226.x |