Geographic Variation in Sex Pheromone of Asian Corn Borer, Ostrinia furnacalis, in Japan |
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| Authors: | Yongping Huang Takuma Takanashi Sugihiko Hoshizaki Sadahiro Tatsuki Hiroshi Honda Yutaka Yoshiyasu Yukio Ishikawa |
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| Affiliation: | (1) Laboratory of Applied Entomology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan;(2) Institute of Agriculture and Forestry, University of Tsukuba, Tsukuba, 305-8572, Japan;(3) Laboratory of Entomology, Kyoto Prefectural University, Sakyo-ku, Kyoto, 606-0823, Japan |
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| Abstract: | Geographic variation in the sex pheromone of the Asian corn borer, Ostrinia furnacalis (Guenée), was surveyed in populations sampled at four locations ranging from 39.7°N to 32.9°N in Japan. The sex pheromone of the three northern populations was composed of (E)- and (Z)-12-tetradecenyl acetates with a mean E proportion of 36–39%. The southernmost population (Nishigoshi) had the same components but with a significantly higher E composition of 44%. The frequency distribution of the E ratio in the Nishigoshi population exhibited a small peak near 38% and a major peak near 46%. A family-wise analysis of the sex pheromone of this population confirmed that there were two distinct phenotypes regarding the E ratio. An   46% E strain inhabits southern parts of Japan, in addition to an 38% E strain, which seems to be predominant in other regions of Japan. |
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| Keywords: | Ostrinia furnacalis sex pheromone (E)-12-tetradecenyl acetate (Z)-12-tetradecenyl acetate field trap experiment geographic variation |
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