| Project/Area Number |
03660051
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
植物保護
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| Research Institution | Kinjo Gakuin University, Junior College |
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Principal Investigator |
ONO Tomohiro Kinjo Gakuin University, Junior College, Professor, 教授 (50125192)
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| Project Period (FY) |
1991 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥1,000,000 (Direct Cost: ¥1,000,000)
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| Keywords | Lepidoptera / potato tuberworm moth / sex pheromone component / sex pheromone content / individual variation / rearing temperature |
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| Research Abstract |
The factors controlling the component ratio and the content of the sex pheromone were examined in the potato tuberworm moth, Phthorimaea operculella. This species is known to have a huge individual variation on the component ratio. On the ratio of two pheromone components, the genetical factor was thought to be a minor one because the variation of the ratio did not decrease as a continuous inbreeding was conducted. Instead, some environmental factors like rearing temperature modified the ratio. Triene % increases in higher temperature, while it decrease in lower. By the experiments following pheromone content with female age after emergence, it was clarified that the diene component was synthesized after emergence. The bio-synthetic speed of diene was controlled by ambient temperature condition, strongly. Therefore, the diene % reached to 25 ﾟC level at one day later. On the other hand, the pheromone content was controlled genetically. The author could get a ''high pheromone content strain'' during continuous inbreedings.
To analyze the emitted pheromone, an air-borne collection apparatus was also designed. The apparatus are still improving for more efficient collection.
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