The following compounds were field tested in multiple funnel or drainpipe traps as attractants for the mountain pine beetle, Dendroctonusponderosae Hopkins, in British Columbia lodgepole pine, Pinuscontorta var. latifolia Engelm. forests: trans-verbenol, 3-caren-10-ol, acetophenone, E-2-methyl-6-methylene-octa-2,7-dienol (myrcenol) and 2-p-menthen-7-ol (all female-produced volatiles which had proven attractive in laboratory bioassays); exo-brevicomin (produced by males); and α-pinene, β-pinene, 3-carene, β-phellandrene, terpinolene and myrcene (host tree monoterpenes). trans-Verbenol was demonstrated to be a highly active aggregation pheromone, as was (±)-exo-brevicomin.
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