Effects of dodecyl acetate andZ-10-tridecenyl acetate on attraction ofEupoecilia ambiguella males to the main sex pheromone component,Z-9-Dodecenyl acetate |
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Authors: | Stefan Rauscher Heinrich Arn Patrick Guerin |
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Affiliation: | (1) Swus Federal Research Station, CH-8820 Wädemwil, Switzerland |
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Abstract: | Attraction ofE. ambiguella males toZ-9-dodecenyl acetate (Z9-12 Ac), alone and in combination with dodecyl acetate (12 Ac) orZ-10-tridecenyl acetate (Z10-13 Ac) was tested in both wind-tunnel and field experiments. In the laboratory, response toZ9-12 Ac reached a distinct dosage optimum at which attraction was nearly as good as to live females. Addition of 12 Ac, a minor component of female glands and effluvia, had no effect at low doses ofZ9-12 Ac and only marginally improved attraction at the optimum. However, inclusion of 12 Ac with an overdose ofZ9-12 Ac fully restored activity. In the field,Z9-12 Ac alone was not very attractive at any dose; catches markedly increased by adding 12 Ac and climbed with increasing dose of each compound up to 10 mg. Optimum ratio ofZ9-12 Ac to 12 Ac was 1 1 to 1 5. Another compound,Z10-13 Ac, had the same effect as 12 Ac in the laboratory and the field but was effective at a lower dose. In the field, inclusion of the synergist permits use of high cap loads to attract more males, perhaps from greater distances. |
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Keywords: | Z-9-Dodecenyl acetate Z-10-tridecenyl acetate dodecyl acetate sex pheromone synergism behavior wind tunnel field trapping European grape moth Eupoecilia ambiguella Lepidoptera Tortricidae |
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