磁感应及其三胞胎介导在传送中的传送
Cordula V Mora1, Michael Davison, J Martin Wild
1School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand. cvmora@email.unc.edu
Nature
|November 27, 2004
概括
旅行可以检测磁异常,这表明它们有导航的磁感. 这种能力,很可能位于上部,受到磁铁或神经阻塞的影响,而不是缺乏嗅觉.
科学领域:
- 鸟类学 鸟类学是一门学科.
- 动物导航 动物导航
- 感官生物学 感官生物学
背景情况:
- 旅行的导航依赖于大气气味或地球磁场.
- 之前的研究对子的磁感性产生了相互矛盾的结果,质疑它们使用磁图的能力.
- "地图和指南针"假设表明,子使用磁性地图来定位.
研究的目的:
- 为了研究信使辨别磁性异常的能力.
- 为了确定与子磁感受相关的感觉机制和位置.
- 重新评估用于子定向实验的传统方法.
主要方法:
- 条件选择实验,以测试对磁异常的反应.
- 实验性操纵,包括附加磁铁,上部局部麻醉和神经部分 (三和嗅觉).
- 在不同的实验条件下对歧视损害的评估.
主要成果:
- 寄信在磁性异常的存在和不存在之间进行了歧视.
- 通过将磁铁连接到麦片和麻醉上方的部,区分能力显著受损.
- 切割三神经的眼科分支损害了分辨能力,而切割嗅觉神经则没有.
结论:
- 磁感应,很可能是基于磁铁的,位于寄宿子的上部.
- 传统的诱导厌氧 (嗅觉丧失) 的方法可能会无意中损害磁感应.
- 未来的导向研究必须独立评估子的磁性和嗅觉感官系统.
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