Sex pheromone components of the rice leaffolder,Cnaphalocrocis medinalis (Lepidoptera: Crambidae), in Indonesia |
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| Authors: | Kei Kawazu Tarô Adati Yutaka Yosiyasu Ketut Sumiartha Wayan Susila Putu Sudiarta Hari Purwanto Sadahiro Tatsuki |
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| Institution: | 1. Department of Electronic Chemistry, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan;2. Faculty of International Agriculture and Food Studies, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan;3. Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto 606-0823, Japan;4. Faculty of Agriculture, Udayana University, Kampus Bukit, Jimbaran 80361, Bali, Indonesia;5. Faculty of Biology, Gadjah Mada University, Jl. Teknika Selatan, Yogyakarta 55281, Indonesia;6. Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan |
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| Abstract: | Field tests of three synthetic sex pheromone blends (Japanese blend: Z11–18:Ald (55 μg), Z13–18:Ald (500 μg), Z11–18:OH (120 μg) and Z13–18:OH (180 μg), Indian blend: Z11–16:Ac (50 μg) and Z13–18:Ac (500 μg) and Philippine blend: Z11–16:Ac (500 μg) and Z13–18:Ac (10 μg) based on geographic variations in sex pheromones) of the rice leaffolder moth, Cnaphalocrocis medinalis Guenée (Lepidoptera: Crambidae), were conducted at Yogyakarta (Java), and at Sempidi and Penatih (Bali), Indonesia. Only the Japanese blend attracted significant numbers of male C. medinalis, while neither the Indian nor the Philippine blend showed any attractiveness to the males. In the GC–MS analysis of a crude extract from pheromone glands of female C. medinalis collected at Sanur, Bali. Indonesia, Z11–18:Ald, Z13–18:Ald, Z11–18:OH and Z13–18:OH were detected at a ratio of 10:100:26:37, and the total amount was approximately 0.8 ng/female. Neither Z11–16:Ac nor Z13–18:Ac were detected. These results suggest that C. medinalis that respond to the Japanese blend are widely distributed from Eastern Asia through Southeast Asia. |
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