Field evaluation and stability studies of the synthetic pheromone of the diamondback moth, Plutella xylostella

Field evaluation and stability studies of the synthetic pheromone of the diamondback moth, Plutella xylostella

Taipei Academic Sinica, Institute of Botany Taiwan

1983

p. 147-155

QK901.W3

The optimal dose of the sex phermones of the diamondback moth in the field trapping was 50-100 ug of a mixture of (Z)-11-hexadecenyl acetate, and (Z)-11-hexadecen-1-o1 in the ratio of 5:5:0.1, dispensed in polyethylene (PE) caps of PE microtubes. Under ordinary conditions, the synthetic pheromone was added to the pheromone mixture, the longevity of the attractant bait was extended to five weeks. The mechanism of this prolongation of the bait was elucldated by showing that (Z)-11-hexadecenal, one component of the sex pheromone, gave (Z)-11-hexadecenoic acid and hydtroperoxides by illumination in sunlight or irradiation with a 300-W lamp. This photooxidation of the sex pheromone could be inhibited by adding BHT. Another component of the sex pheromone of the diamondback moth, (Z)-11-hexadecenyl acetate, was stable to photooxidation under the same conditions. [AS]

Proceedings of the seminar on allelochemicals and pheromones

Research > Published Articles