Dendroctonus pseudotsugae hopkins (Coleoptera: Scolytidae): Production of and response to enantiomers of 1-methylcyclohex-2-en-1-ol |
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| Authors: | B. S. Lindgren G. Gries H. D. Pierce Jr. K. Mori |
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| Affiliation: | (1) Phero Tech Inc., 7572 Progress Way RR5, V4G 1E9 Delta, B.C., Canada;(2) Centre for Pest Management, Department of Biological Sciences, Canada;(3) Department of Chemistry, Simon Fraser University, V5A 1S6 Burnaby, B.C., Canada;(4) Department of Agricultural Chemistry, University of Tokyo, Yayoi 1-1-1 Bunkyo-Ku, 113 Tokyo, Japan |
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| Abstract: | Female Douglas-fir beetles,Dendroctonus pseudotsugae, produced an average 45 55 mixture of the (S)-(–)- and (R)-(+)-enantiomers of 1-methylcyclohex-2-en-1-ol (MCOL). The (S)-(–)(R)-(+) ratio of 3-methylcyclohex-2-en-1-ol (seudenol) produced by this population of females was 3466. Lindgren funnel traps baited with (R)-(+)-MCOL attracted significantly more males and females than (S)-(–)-MCOL-baited traps, which captured significantly more beetles than unbaited controls. The combined effect of the enantiomers was additive, rather than synergistic. Either enantiomer of MCOL increased catches by frontalin-baited traps. Racemic MCOL can be used for trapping Douglas-fir beetles in south-central British Columbia. |
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| Keywords: | Dendroctonus pseudotsugae Douglas-fir beetle Coleoptera Scolytidae aggregation pheromone production response methylcyclohexenol seudenol enantiomers trapping |
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