Apple ermine moth,Yponomeuta malinellus Zeller Two components of female sex pheromone gland highly effective in field trapping tests |
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Authors: | L M McDonough H G Davis C L Smithhisler S Voerman P S Chapman |
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Affiliation: | (1) Yakima Agricultural Research Laboratory, Agricultural Research Service, 3706 W. Nob Hill Blvd., 98902 Yakima, Washington;(2) Institute for Pesticide Research, P.O. Box 650, 6700 AR Wageningen, The Netherlands |
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Abstract: | When electroantennographic responses of maleYponomeuta malinellus Zeller to model compounds were determined at dosages of 0.3–30 ng, the strongest responses were obtained from (Z)-9-dodecen-1-ol acetate (Z9–12 Ac). Also, strong responses were obtained from (Z)-11-tetradecenal (Z11–14 A1) and (Z)-11-tetradecen-1-ol (Zl1–14 OH). At a dosage of 0.3 ng,Z11–14 A1 produced a stronger response thanZ11–14 OH, while at a dosage of 30 ng,Z11–14 OH andZ11–14 A1 produced equal responses. Gas chromatographic and mass spectral analysis of extracts of female sex pheromone glands showed the presence ofZ9–12 Ac, tetradecan-1-ol (14 OH), (E)-11-tetradecen-1-ol (E11–14 OH),Z11–14 OH, hexadecan-1-ol, and hexadecan-1-ol acetate in a ratio of 0.6 200 37 100 140 35. In field tests,Z9–12 Ac andZ11–14 OH together were required for trap catch, and addition ofZ11–14 A1,E11–14 OH, 14 OH, or (Z)-11-tetradecen-1-ol acetate did not increase catch. Ratios in rubber septa of 0.5 99.5 to 1.5 98.5 (Z9–12 Ac/Z11–14 OH) captured the most males and captures were statistically equivalent for dosages of 10–1000 g/rubber septum. Traps baited with the synthetic lure produced better catches than those baited with females.Lepidoptera: Yponomeutidae. |
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Keywords: | Lepidoptera Yponomeutidae Yponomeuta malinellus sex pheromone apple ermine moth (Z)-9-dodecen-1-ol acetate (Z)-11-tetradecen-1-ol |
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