Enantiomer Preference of Trypodendron lineatum and Effect of Pheromone Dose and Trap Length on Response to Lineatin-baited Traps in Interior British Columbia

Authors: Hoover S.E.R.¹; Lindgren B.S.¹; Keeling C.I.²; Slessor K.N.²

Source: Journal of Chemical Ecology, Volume 26, Number 3, March 2000 , pp. 667-677(11)

Publisher: Springer

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Abstract:

Both enantiomers of the aggregation pheromone lineatin were obtained in very high enantiomeric purity by preparative chiral liquid chromatography on microcrystalline cellulose triacetate. Catches of the striped ambrosia beetle, Trypodendron lineatum, in multiple-funnel traps baited with lineatin enatiomer ratios (plus/minus) of 100 : 0, 75 : 25, 50 : 50, 25 : 75, and 0 : 100, demonstrated that (+)-lineatin is the only active enantiomer in interior British Columbia, where two other Trypodendron species are sympatric. In additional experiments using (±)-lineatin, catches of both sexes increased significantly with trap length, either at a constant pheromone dose per trap, or a constant dose per four-funnel unit, up to 16 funnels per trap. When trap length was held constant at eight funnels, increasing the lineatin dose fourfold had no effect on trap catches.

Keywords: Sex ratio; multiple-funnel traps; preparative chiral liquid chromatography; microcrystalline cellulose triacetate; Coleoptera: Scolytidae

Language: English

Document Type: Regular paper

Affiliations: 1: College of Science and Management, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada 2: Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada

Publication date: 2000-03-01