抄録
In field tests conducted in Chinese yam fields in Tottori Prefecture of Japan in 1998, maximum catches of Acrolepiopsis nagaimo males were obtained at ratios between 50 : 50 and 75 : 25 (=natural ratio) when 100 μg of a binary blend of (Z)-11-hexadecenyl acetate (Z11-16:Ac) and (Z)-11-hexadecenal (Z11-16:Ald) was baited in the traps. This attractiveness was apparently enhanced when 1% to 5% of (Z)-11-hexadecen-1-ol (Z11-16:OH) was added. When 2% Z11-16:OH was blended, the synergistic effect was apparent at high doses (≥100 μg/septum). The third compound, Z11-16:OH, was therefore confirmed as a sex pheromone component. The optimum blend for male attraction was determined to be 200–1000 μg/septum of a 50 : 50 : 2 blend of Z11-16:Ac, Z11-16:Ald and Z11-16:OH, respectively. More than ten times as many males were captured with this blend than with two 2- to 3-d-old virgin females.
