Circabidian rhythm in a large black chafer Holotrichia parallela
| Project/Area Number |
23657060
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Animal physiology/Animal behavior
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| Research Institution | Osaka City University |
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Principal Investigator |
SHIGA Sakiko 大阪市立大学, 理学(系)研究科(研究院), 教授 (90254383)
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| Co-Investigator(Kenkyū-buntansha) |
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) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | コウチュウ / 概日リズム / 標識再補法 / 生物時計 / 概倍日リズム / 位相反応 / 標識再捕法 / 位相反応曲線 |
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| Research Abstract |
Many organisms synchronize their biological activity with environmental cycles on the earth. However, the large black chafer Holotrichia parallela have a unique 2-day rhythm. Adults remain under ground in the daytime and appear on the ground every other night. We have made an ecological and chronobiological study on this rhythm. Mark and recapture study suggested that beetles repeatedly appear on the same tree for feeding on alternate days from June to September. It is thought that 2 groups occurred sympatrically on different days. The captured beetles showed a clear endogeneous activity rhythm with a period of about 48 h. Phase responses to light pulses suggested that this circabidian rhythm is driven by a circadian clock.
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Report
(4 results)
Research Products
(8 results)
