Four-component synthetic sex pheromone of the smaller tea tortrix moth: field evaluation of its potency as an attractant for male moth

Tamaki, Y.; Noguchi, H.; Sugie, H.; Kariya, A.; Arai, S.; Ohba, M.; Terada, T.; Suguro, T.; Mori, K.

Japanese Journal of Applied Entomology and Zoology 24(4): 221-228


ISSN/ISBN: 0021-4914
DOI: 10.1303/jjaez.24.221
Accession: 000892448

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The R-isomer of 10-methyldodecyl acetate (10-Me-12Ac), a minor component of the female sex attractant of the smaller tea tortrix moth (Adoxophyes sp.) has a slightly higher activity than the S-isomer, though the difference is not significant. Racemic 10-Me-12Ac can be used as a component of a synthetic lure. The optimum dose of 10-Me-12Ac was found to be 10 to 100 times that of the naturally-occurring ratio. The optimum ratio of (Z-9- and (Z)-11-tetradecenyl acetates (Z9-14Ac and Z11-14Ac), the major components of the pheromone, ranged from 70:30 to 30:70. The optimum dose of (E)-11-tetradecenyl acetate (E11-14Ac), another minor component, was 1 to 40% of that of the major components. The addition of (E)-9-tetradecenyl acetate (E9-14Ac) at amounts exceeding 1% of that of the major components markedly inhibited the activity of the lure. A standard mixture containing 0.63 mg Z9-14Ac, 0.31 mg Z11-14Ac, 0.04 mg E11-14Ac and 2.0 mg 10-Me-12Ac (R, S or racemic) loaded on a plastic dispenser was more potent as an attractant for male moths than a virgin female.