Dendroctonus pseudotsugae: A Hypothesis Regarding Its Primary Attractant

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Science  10 Dec 1965:
Vol. 150, Issue 3702, pp. 1457-1459
DOI: 10.1126/science.150.3702.1457


The Douglas-fir beetle is attracted to α-pinene but repelled by β-pinene. Attacks on standing trees are related to the content of α- or β-pinene in the tree; this correlation suggests that volatile oils may be the stimuli initially attracting the insect to the Douglas fir.