2022 Fiscal Year Final Research Report
The control technique for eclosion in butterflies durring school classes
| Project/Area Number |
20K20798
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 9:Education and related fields
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| Research Institution | Hokkaido University of Education |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
奥寺 繁 北海道教育大学, 教育学部, 准教授 (20625941)
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| Project Period (FY) |
2020-07-30 – 2023-03-31
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| Keywords | チョウ / 理科 / 羽化制御 / フィールド調査 / 環境教育 / 絶滅危惧種 |
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| Outline of Final Research Achievements |
In elementary school science classes, children are asked to observe the emergence of butterflies. Therefore, we investigated a control method for observing emergence during class. By having the mother butterfly(Colias erate) lay eggs, predicting the timing of emergence from the effective cumulative temperature and the developmental zero point, and reheating the pupae after low-temperature treatment, the objective indicators for eclosion during class are changes in pupa color and mass reduction. We tried to measure the rate. As a result, it was confirmed that the pupa emerges within 25-45 minutes, based on the change in color of the pupa and the decrease in mass due to the cavitation around the 4th abdomen of the pupa. In addition, we conducted a survey of endangered butterflies and examined teaching materials from the perspective of environmental education and conservation ecology.
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| Free Research Field |
科学教育
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| Academic Significance and Societal Importance of the Research Achievements |
小学校の理科では，チョウの羽化を観察させる学習がある。しかし，授業中に観察することはほぼ不可能に近い。本研究の目的は羽化メカニズムの解明ではなく，羽化のタイミングを検討することで，「予定した時間に羽化させる方法」と，実際の学校現場での「実践授業を行うことによる教育的効果の検証」であり，昆虫生理学の先端的な専門知識を初等教育の理科の授業に導入しようとするものであり，理科の教材としての意義は極めて高い。また，本研究のもう一つの目的は，環境教育および生態保全学の観点から，我が国において絶滅危機に瀕しているチョウの現状をフィールド調査することであり，その結果を教材化することにも大きな意義がある。
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