(5Z, 7E)-5, 7-Dodecadien-1-ol: Female Sex Pheromone of the Pine Moth Dendrolimus spectabilis Butler

Abstract

The sex pheromone of the pine moth Dendrolimus spectabilis Butler was tentatively identified as 5, 7-dodecadien-1-ol by the use of the electroantennogram technique. Analyses of abdominal tip extracts of virgin females by gas-liquid chromatography and mass spectroscopy showed the presence of a (5Z, 7E)-isomer and a (5E, 7E)-isomer in the ratio of about ca. 5:1. In field examinations with four synthetic isomers of 5, 7-dodecadien-1-ol, only traps baited with the (5Z, 7E)-isomer captured an appreciable numbers of male moths.