Environmental Entomology (1987) 16, 712-715

F.H. Arthur and F.P. Hain (1987)
Influence of balsam woolly adelgid (Homoptera: Adelgidae) on monoterpenes found in bark and sapwood of fraser fir
Environmental Entomology 16 (3), 712-715
Abstract: Bark of mature Fraser fir, Abies fraseri (Pursh.) Poir, from Mt. Mitchell, N.C., and Mt. Rogers, Va., was artificially wounded and treated with chemicals (naphthalene acetic acid, pectinase, or todomatsuic acid) suspected to be in association with balsam woolly adelgid, Adelges piceae (Ratzeburg), attack. alpha-and ß-pinene, delta-3-carene, and limonene were the only monoterpenes found in Fraser fir at both locations. There were no differences in monoterpene content between wounds and controls at either site, but bark samples from firs at Mt. Rogers contained lower percentages of alpha-pinene and delta-3-carene than firs at Mt. Mitchell. Sapwood tissue beneath adelgid wool masses at the above sites and Roan Mt. were also analyzed for monoterpenes. Infested trees at Mt. Rogers contained less alpha- and ß-pinene than uninfested controls. There were no differences at Mt. Mitchell or Roan Mt.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Frank H. Arthur

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Adelges piceae	Fir (Abies)	U.S.A. (NE)
	Adelges piceae	Fir (Abies)	U.S.A. (SE)