| Project/Area Number |
18K06341
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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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| Review Section |
Basic Section 44050:Animal physiological chemistry, physiology and behavioral biology-related
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| Research Institution | Tottori University (2020)
Gakushuin University (2018-2019) |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 環境適応 / 環境応答 / 環境変化 / 行動生理 / 腸-脳軸 / 定量行動 / プラナリア / 脳高次機能 / 学習 / 周期性自発運動 / 定量行動学 / 行動制御 / 連合学習 / 外部環境 / 適応行動 / 末梢神経 / 環境応答行動 / 行動 |
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| Outline of Final Research Achievements |
Even subtle changes in environmental factors can significantly impact animal behavior, affecting interspecies interactions and ultimately impacting the ecosystem. However, the ways in which animals with complex behaviors, governed by neural processes, adapt to environmental changes remain largely unknown. The freshwater planarian, Dugesia japonica, which responds keenly to environmental cues. Planarians are thus ideal subjects for exploring how environmental changes influence specific animal behaviors. Our study reveals that signals from the peripheral pharyngeal nervous system to the brain, along with the sensitivity of chemosensory neurons directly modulated by environmental chemical factors, critically influence individual feeding behaviors related to growth and survival. These findings highlight the central role of the peripheral nervous system in regulating individual planarian behavior.
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| Academic Significance and Societal Importance of the Research Achievements |
動物行動における環境適応性の複雑な作動原理については大部分が不明である。本研究では、環境変化に伴ってプラナリアが出力行動を適応的に選択する現象に着目し、その機構を非常に単純な原理として理解しようとする点が独創的であり、学術的に意義深い。また、水生生物であるプラナリアの行動様式の機構に関する研究は、SDGsの「産業と技術革新の基盤をつくろう」および「海の豊かさを守ろう」という目標に貢献する。
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