Identification and Field Assay of Two Aggregation Pheromone Components Emitted by Males of the Bark Beetle Polygraphus punctifrons (Coleoptera: Curculionidae)

The bark beetle Polygraphus punctifrons (Coleoptera: Curculionidae) is a species that feeds on Norway spruce ( Picea abies ) and is found in the Northern parts of Europe and Russia. The release of volatile organic compounds (VOCs) produced by males and females of P. punctifrons when the beetles bore...

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Bibliographic Details
Published in:Journal of chemical ecology 2019-04, Vol.45 (4), p.356-365
Main Authors: Rahmani, Rizan, Wallin, Erika A., Viklund, Lina, Schroeder, Martin, Hedenström, Erik
Format: Article
Language:English
Subjects:
(−)-(R)-Terpinen-4-ol
1R
2S)-Grandisol
Agglomeration
Aggregation pheromone
Agriculture
Bark
Beetles
Biochemistry
Biochemistry and Molecular Biology
Biokemi och molekylärbiologi
Biological Microscopy
Biomedical and Life Sciences
Boring
Coleoptera
Curculionidae
Ecology
Enantiomeric separation
Entomology
Ethanol
Females
Gas chromatography
Life Sciences
Males
Mass spectrometry
Mass spectroscopy
Organic compounds
Paratetrapedia punctifrons
Picea abies
Pine trees
Polygraphus
Preparative fraction collection
Solid phase methods
Solid phases
SPME
Synergistic effect
Terpinene
VOCs
Volatile compounds
Volatile organic compounds
Volatiles
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Summary:The bark beetle Polygraphus punctifrons (Coleoptera: Curculionidae) is a species that feeds on Norway spruce ( Picea abies ) and is found in the Northern parts of Europe and Russia. The release of volatile organic compounds (VOCs) produced by males and females of P. punctifrons when the beetles bore into spruce stem sections in a laboratory environment was studied using solid phase microextraction (SPME). The sampled VOCs emitted by boring beetles were analysed by gas chromatography and mass spectrometry (GCMS). (+)-2-[(1 R ,2 S )-1-Methyl-2-(prop-1-en-2-yl)cyclobutyl]ethanol [(+)-(1 R ,2 S )-grandisol] and (−)-( R )-1-isopropyl-4-methyl-3-cyclohexen-1-ol [(−)-( R )-terpinen-4-ol] were identified to be male specific volatiles. The identity of the compounds was confirmed by comparison with synthetic samples. Field trials with synthetic compounds in Sweden showed that racemic grandisol per se was strongly attractive for both males and females, while (−)-( R )-terpinen-4-ol was not. Further, when adding (−)-( R )-terpinen-4-ol to rac -grandisol, a synergistic effect was observed as the trap catch of P. punctifrons was fourfold. (−)-( R )-Terpinen-4-ol by its own did not attract P. punctifrons but Polygraphus poligraphus, and the latter was also attracted to traps baited with a 10:90 mixture of the two compounds. Thus, we have identified (+)-(1 R ,2 S )-grandisol as a main component and (−)-( R )-terpinen-4-ol as a minor component of the aggregation pheromone of P. punctifrons. This opens future possibilities to monitor and, if necessary, manage populations of P. punctifrons .
ISSN:0098-0331
1573-1561
1573-1561
DOI:10.1007/s10886-019-01056-6