RUI: An Analysis of Particle-Based Magnetic Field Transduction in the Bobolink

RUI：Bobolink 中基于粒子的磁场传导分析

• 批准号: 9011840
• 负责人: Robert Beason
• 金额: $ 13.76万
• 依托单位: SUNY College at Geneseo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-01 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9011840&HistoricalAwards=false
• 关键词: RUI; Analysis; Particle; Based; Magnetic

How birds navigate during long-distance migrations remains mysterious, but there is behavioral evidence to suggest that some birds detect the earth's magnetic field. There is controversy about whether such magnetic detection requires a magnetic material such as the mineral magnetite. This mechanism would be an exciting new discovery if true, but because of conflicting results, a rigorous set of tests still is needed to establish its validity. One property of magnetite is that it can be re-magnetized, and this project use the novel approach of applying a remagnetizing pulse to migratory birds, and then measuring their nightly behavior of preferred headings in a planetarium. The presence or lack of short-term or long- term effects from different conditions of remagnetization will be examined. This approach creates a set of critical tests to reject or accept whether behavioral magnetic field detection depends on magnetic particles. Results from this novel approach will have an impact on this controversial and interesting field, and this project also has a significant impact on undergraduate scientific experience.

长距离迁移期间鸟类如何导航仍然是神秘的，但是有行为证据表明有些鸟类检测到地球的磁场。 关于这种磁性检测是否需要诸如矿物磁铁矿之类的磁性材料存在争议。 如果是真的，这种机制将是一个令人兴奋的新发现，但是由于结果矛盾，仍然需要一组严格的测试来确定其有效性。 磁铁矿的一个特性是可以重新磁化，并且该项目使用新的方法将remagnetized脉冲应用于候鸟，然后测量其在天文馆中首选标题的夜间行为。 将检查来自不同条件的到序化条件的短期或长期影响。 这种方法创建了一组关键测试，以拒绝或接受行为磁场检测是否取决于磁性颗粒。 这种新颖的方法的结果将对这个有争议且有趣的领域产生影响，该项目也对本科科学经验产生了重大影响。