Sex pheromone components of the fruit-tree leaf roller,Archips argyrospilus (Walker) (Lepidoptera: Tortricidae), in British Columbia |
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Authors: | J -P Deland R Gries G Gries G J R Judd B D Roitberg |
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Affiliation: | (1) Department of Biological Sciences, Simon Fraser University, V5A 1S6 Burnaby, British Columbia, Canada;(2) Agriculture Canada, Research Station, VOH 1Z0 Summerland, British Columbia, Canada |
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Abstract: | In field experiments in the Okanagan Valley, British Columbia, the pheromone blend of (11Z)-tetradecen-1-ol acetate (Z11-14:OAc), (11E)-tetradecen-1-ol acetate (E 11-14:OAc), (9Z)-tetradecen-1-ol acetate (Z9-14:OAc) and dodecan-1-ol acetate (12: OAc) at a 100 64 2 1 ratio (western FTLR blend) attracted significantly more male fruit-tree leaf roller (FTLR),Archips argyrospilus (Walker), than did the previously reported four-component blend and modifications thereof. Addition of (11Z)-tetradecen-1-ol (Z11-14:OH) to the western FTLR blend in a ratio of 4% relative toZ11-14: OAc further significantly enhanced attraction. Compounds were identified and their ratio determined by coupled gas chromatographic-electroantennographic (GC-EAD) and coupled GC-mass spectrometric analyses of female FTLR pheromone gland extracts and by retention index calculations of candidate pheromone components. Determination and use of geographically specific pheromonal blends may be required for optimal, semiochemical-based biorational control of FTLR and other lepidopteran orchard pests. |
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Keywords: | Archips argyrospilus fruit-tree leaf roller Lepidoptera Tortricidae sex pheromone (11Z)-tetradecen-1-ol acetate (11E)-tetradecen-1-ol acetate (9Z)-tetradecen-1-ol acetate dodecan-1-ol acetate (11Z)-tetradecen-1-ol |
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