英文摘要 |
"(Z)-8-dodecen-1-y1 acetate (Z8-12:Ac) is the main component of sex pheromones of Cydia notanthes Meyrick and Cryptophlebia ombrodelta (Lower). The isomer of Z8-12:Ac, (E)-8-dodecen-1-y1 acetate (E8-12:Ac), may inhibit the attraction of Z8-12:Ac to C. notanthes. The component Z8-12:Ac with purity 96% was suitable for trapping C. ombrodelta. In this experiment, five additives of 1-dodecyl acetate (1-12:Ac), 1-hexadecyl acetate (1-16:Ac), 1-octadecyl acetate (1-18:Ac), (Z)-8-dodecen-1-ol (Z8-12:OH), and (E)-8-dodecen-1-ol (E8-12:OH) were added to the base of Z8-12:Ac/ E8-12:Ac = 96/4 and used as attractants for C. notanthes and C. ombrodelta in the carambola orchards in Nanshi Township, Tainan County and Yuanlin Township, Changhua County, Taiwan. The results showed that the additives of 1-12:Ac, 1-16:Ac, 1-18:Ac and E8-12:OH did not influence the attraction of the mixture of Z8-12:Ac/E8-12:Ac=96/4 to C. notanthes. However, Z8-12:OH did enhance the attraction. Percentages of total C. notanthes males trapped with the formula Z8-12:Ac/E8-12:Ac/ Z8-12:OH = 96/4/30 at 3 experiments were 81.2, 69.6 and 69.6%, respectively. For C. ombrodelta, additives of 1-12:Ac, 1-16:Ac, and 1-18:Ac did not influence the attractiveness of the mixture of Z8-12:Ac/E8-12:Ac=96/4. Additives, E8-12:OH and Z8-12:OH, increased the attractiveness of Z8-12:Ac/E8-12:Ac=96/4 to C. ombrodelta significantly. The percentage of total males captured in treatment of Z8-12:Ac/E8-12:Ac/Z8-12:OH = 96/4/30 was higher than that of Z8-12:Ac/E8-12:Ac =96/4. The percentage of total C. ombrodelta males trapped with the formula Z8-12:Ac/E8-12:Ac/Z8-12:OH = 96/4/30 was higher than those trapped with other formula. Component Z8-12:Ac with purity 96% may improve its attractiveness to C. notanthes by adding Z8-12:OH to its sex pheromone formula. Addition of Z8-12:OH and E8-12:OH to Z8-12:Ac with purity 96% may increase its attractive effect on C. ombrodelta." |