| Project/Area Number |
24570090
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Animal physiology/Animal behavior
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| Research Institution | Ashiya University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Kazuhiro 宮城学院女子大学, 学芸学部, 教授 (00316415)
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| Co-Investigator(Renkei-kenkyūsha) |
GOTO Shinsuke 大阪市立大学, 大学院理学研究科, 准教授 (70347483)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 概日時計 / 羽化リズム / 温度較差反応 / タマネギバエ / 温度周期 / 温度較差 / 概日時計遺伝子period / 羽化 |
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| Outline of Final Research Achievements |
Under natural conditions, thermoperiod rather than photoperiod would entrain the eclosion rhythm, because Delia antiqua pupates until 20 cm deep in the soil where no light penetrates. Since the amplitude of daily change in temperature decreases with depth in the soil, pupae lying deeper in the soil would eclose as adults at the optimal time period of early morning despite of the depth-dependent phase delay of the Zeitgeber (morning signal). In this study it is implied (1) that continuous light weaken the coupling strength between eclosion rhythm and thermoperiod compared with the continuous darkness, (2) that high or low temperature stimulus exhibited phase-shifting effects in the circadian clock, (3) that the phase of oscillation in the expression pattern of per was earlier at 1 °C temperature step than at 8 °C temperature step.
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