Summary
A sex pheromone produced by male cabbage looper moths,Trichoplusia ni (Hübner), has been isolated from the genital scent brushes and identified as 2-phenylethanol. It is shown conclusively to elicit specific behavioural responses in the female (such as wing vibration and abdominal elevation), as determined by a novel behavioural laboratory bioassay. This is taken as further evidence that the male pheromone ofT. ni acts as a sexual stimulant (aphrodisiac) prior to mating. 2-Phenylethanol represents the first identification of a genital scent brush pheromone in the family Noctuidae, and of a male pheromone in the subfamily Plusiinae.
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We thank Dr.P. A. Giang for infrared spectra, Dr.N. Wakabayashi for gas chromatograms, Dr.R. M. Waters for NMR-spectra, Dr.S. Dutky for mass spectra, and MissD. Gough for technical assistance in rearing the insects.
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Jacobson, M., Adler, V.E., Kishaba, A.N. et al. 2-Phenylethanol, a presumed sexual stimulant produced by the male cabbage looper moth,Trichoplusia ni. Experientia 32, 964–966 (1976). https://doi.org/10.1007/BF01933912
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DOI: https://doi.org/10.1007/BF01933912