Abstract
The major component of the female sex pheromone of G. pyloalis is (E, E, Z)-10, 12, 14-hexadecatrienyl acetate, as evidenced by analyses of ovipositor extracts by GLC and HPLC, and comparison of EAG responses of the male moths to synthetic compounds. The amount of pheromone produced was 1-2 ng/female. No peak for any other isomers of the compound was observed on GLC analysis. Field tests of all possible geometric isomers of synthetic 10, 12, 14-hexadecatrienyl acetate showed that only (E, E, Z)-configuration had activity. Traps baited with a silicone rubber septum impregnated with 0.3 mg of the (E, E, Z)-isomer, which was protected with an antioxidant, caught more G.Pyloalis males than traps baited with virgin female moths.
