CO sub(2)-Mediated Changes in Aspen Chemistry: Effects on Gypsy Moth Performance and Susceptibility to Virus

The impacts of long-term carbon dioxide enrichment on the foliar chemistry of quaking aspen (Populus tremuloides) were evaluated. The effects of these changes in chemistry on gypsy moth (Lymantria dispar) and the susceptibility of the gypsy moth to a nucleopolyhedrosis virus (NPV) are then examined....

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Bibliographic Details
Published in:Global change biology 1997-06, Vol.3 (3), p.279-289
Main Authors: Lindroth, Richard L, Roth, Sherry, Kruger, Eric L, Volin, John C, Koss, Patrick A
Format: Article
Language:English
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Summary:The impacts of long-term carbon dioxide enrichment on the foliar chemistry of quaking aspen (Populus tremuloides) were evaluated. The effects of these changes in chemistry on gypsy moth (Lymantria dispar) and the susceptibility of the gypsy moth to a nucleopolyhedrosis virus (NPV) are then examined. As part of this assessment, foliage was collected from open-top chambers maintained out of doors. This foliage was fed to insects in a quarantine raising facility. Elevated CO sub(2) caused substantial declines in leaf nitrogen and elevations in levels of condensed tannins. The higher CO sub(2) levels did not appear to impact levels of starch or phenolic glycosides. Results from both long-term and short-term bioassays conducted on the insects are discussed.
ISSN:1354-1013