Sex pheromone of Grapholita dimorpha Komai (Lepidoptera: Tortricidae), and its utilization for monitoring

• Published in: Applied Entomology and Zoology Vol. 40; no. 3; pp. 521 - 527
• Main Authors: Murakami, Y.(Yamanashi-ken. Fruit Tree Experiment Station (Japan)), Sugie, H, Fukumoto, T, Mochizuki, F
• Format: Journal Article
• Language: English
• Published: JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY 2005
• Subjects: DESARROLLO ESTACIONAL; DEVELOPPEMENT SAISONNIER; FEROMONAS SEXUALES; Grapholita dimorpha; Lepidoptera; MONITORING; PHEROMONE SEXUELLE; PRUNUS SALICINA; SEASONAL DEVELOPMENT; sex pheromone; SEX PHEROMONES; SURVEILLANCE; TORTRICIDAE; VIGILANCIA
• ISSN: 0003-6862; 1347-605X
• DOI: 10.1303/aez.2005.521

Eight compounds (i.e., n-dodecyl acetate, (E)-8-dodecenyl acetate (E8-12:Ac), (Z)-8-dodecenyl acetate (Z8-12:Ac), n-dodecanol, (Z)-8-dodecen-1-ol, n-tetradecyl acetate, (E)-8-tetradecenyl acetate and (Z)-8-tetradecenyl acetate) were detected in extracts of the sex pheromone gland of individual female Grapholita dimorpha at the time of mating. The average ratio of E8- to Z8-12:Ac was 15 : 85. Field trap tests suggested that the two compounds were essential for male attraction, and the ratio of 15 : 85 was the most effective blend in the range of 40 : 60 to 5 : 95. The other six compounds found in the sex pheromone glands were not observed to be either synergistic or inhibitory. Seasonal monitoring using a lure impregnated with E8-12:Ac (150 μg) and Z8-12:Ac (850 μg) revealed that G. dimorpha had four generations in Yamanashi. These results suggest that the lure is a useful tool for monitoring G. dimorpha.