Agricultural and Forest Entomology (2022) 24, 63-71

Rick G. Kelsey and Douglas J. Westlind (2022)
Red turpentine beetle primary attraction increases linearly with (-)-β-pinene+ethanol dose regardless of component ratios, and no change in response with addition of high-release frontalin
Agricultural and Forest Entomology 24 (1), 63-71
Abstract: - Lure efficacy for primary attraction of red turpentine beetle, Dendroctonus valens (Coleoptera: Curculionidae: Scolytinae) observed previously in US Pacific Northwest ponderosa pine forests is (-)-β-pinene+ethanol > (+)-3-carene+ethanol > (+)-α-pinene+ethanol.
- Influence of (-)-β-pinene+ethanol release rates was tested with nine lures representing all combinations of three release levels for each compound in a 3 × 3 factorial design field test in Oregon. Beetle catch had a positive, linear relationship with the combined (-)-β-pinene+ethanol total release (or dose), resulting from higher release of either one or both compounds. Reversing component ratios, that is, 1 : 2 versus 2 : 1 with similar total doses, produced minimal changes in beetle response.
- Females produce frontalin with dual aggregation and sex-pheromone functions. In another test, high-release frontalin, defined as >1.0 mg/day release, was tested at 1.4 to 1.5 mg/day in combination with each monoterpene+ethanol lure above and their trap catch compared with (-)-β-pinene+ethanol lures. Presence of high-release frontalin produced minimal changes in beetle responses.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Rick G. Kelsey

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Dendroctonus valens	Pine (Pinus)	U.S.A. (NW)