Attraction of field-flying aphid males to synthetic sex pheromone |
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| Authors: | Jim Hardie Stephen F Nottingham Glenn W Dawson Richard Harrington John A Pickett Lester J Wadhams |
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| Institution: | (1) Agricultural and Food Research Council Linked Research Group in Aphid Biology, Department of Biology, Imperial College of Science, Technology and Medicine, SW7 2AZ London, United Kingdom;(2) AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, AL5 2JQ Harpenden, Herts, United Kingdom;(3) AFRC Linked Research Group in Aphid Biology, Imperial College at Silwood Park, SL5 7PY Ascot, Berks, United Kingdom |
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| Abstract: | Summary Transparent plastic water traps, baited with the synthetic aphid sex pheromone components (4aS,7S,7aR)-nepetalactone and (1R,4aS,7S,7aR)-nepetalactol or control lures, were placed in four semi-sheltered field sites at a height of 1.1 m. Although males of twenty-one aphid species were collected from the water traps, onlySitobion fragariae (Walker) was abundant. In total, 8 pheromone traps produced 102 males compared with only 10 males in 8 control traps. The sex pheromone released by sexual femaleS. fragariae was identified as the nepetalactone used in the lures. Aphid sex pheromones may be more species-specific than previously thought and the presence of a host plant is not essential for males to locate sexual females. |
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| Keywords: | sex pheromone males field trials Aphididae Sitobion fragariae |
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