An Inhibitor of Sexual Attraction of Male Codling Moths 1 to a Synthetic Sex Pheromone and Virgin Females in Traps

Abstract

In field tests, as little as 0.05 mg of ( E,E )-8,10-dodecadien-1-ol acetate inhibited 95–100% of the attraction of male codling moths, Laspeyresia pomonella (L.), to either 0.2 mg of the synthetic sex pheromone (( E,E )-8,10-dodecadien-1-ol) or to 10 virgin female moths. In laboratory tests of a group of normal alcohols, CnH2n+1OH ( n = 8,9,10…18), only undecanol showed significant inhibition. Undecanol also inhibited attraction in field tests, but required about 20 mg/trap.