Effects on eastern larch beetle of its natural attractant and synthetic pheromones in Alaska.

Richard A. Werner; Malcom M. Furniss; Thomas Ward

doi:10.2737/PNW-RN-371

Treesearch

Effects on eastern larch beetle of its natural attractant and synthetic pheromones in Alaska.

Informally Refereed

Authors:

Richard A. Werner, Malcom M. Furniss, Thomas Ward

Year:

1981

Type:

Research Note

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RN-371

Source:

Res. Note PNW-RN-371. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 7 p

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Abstract

Traps baited with Seudenol + a-pinene caught 87 percent more eastern larch beetles, Dendroctonus simplex LeConte, than did tamarack logs infested with females. Male beetles responded to the synthetic attractant in greater numbers than females. Male beetles were not attracted to frontalin, a principal attractant of the closely related Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins. Attraction was reduced by 92 and 86 percent by addition of methylcylohexenone (MCH) and frontalin but by only 36 percent when trans-verbenol was added. This evidence partially supports the taxonomic separation of the two Dendroctonus species.

Keywords

Attractants (chemical), forest pest control, eastern larch beetle, Dendroctonus simplex

Citation

Werner, Richard A.; Furniss, Malcom M., Yarger, Larry C.; Ward, Thomas. 1981. Effects on eastern larch beetle of its natural attractant and synthetic pheromones in Alaska. Res. Note PNW-RN-371. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 7 p