...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Experimental Biology >A sky polarization compass in lizards: the central role of the parietal eye
【24h】

A sky polarization compass in lizards: the central role of the parietal eye

机译：蜥蜴中的天空极化罗盘：顶眼的核心作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present study first examined whether ruin lizards Podarcis sicula are able to orientate using the e-vector direction of polarized light. Ruin lizards were trained and tested indoors, inside a hexagonal Morris water maze, positioned under an artificial light source producing plane polarized light with a single e-vector, which provided an axial cue. Lizards were subjected to axial training by positioning two identical goals in contact with the centre of two opposite side walls of the Morris water maze. Goals were invisible because they were placed just beneath the water surface, and water was rendered opaque. The results showed that the directional choices of lizards meeting learning criteria were bimodally distributed along the training axis, and that after 90 deg rotation of the e-vector direction of polarized light the lizards directional choices rotated correspondingly, producing a bimodal distribution which was perpendicular to the training axis. The present results confirm in ruin lizards results previously obtained in other lizard species showing that these reptiles can use the e-vector direction of polarized light in the form of a sky polarization compass. The second step of the study aimed at answering the still open question of whether functioning of a sky polarization compass would be mediated by the lizard parietal eye. To test this, ruin lizards meeting learning criteria were tested inside the Morris water maze under polarized light after their parietal eyes were painted black. Lizards with black-painted parietal eyes were completely disoriented. Thus, the present data show for the first time that the parietal eye plays a central role in mediating the functioning of a putative sky polarization compass of lizards.
机译：本研究首先研究了破蜥蜴Podarcis sicula是否能够使用偏振光的e矢量方向进行定向。废墟蜥蜴在室内的六角形莫里斯水迷宫内进行了培训和测试，该迷宫被放置在人造光源下，该光源产生带有单个e矢量的平面偏振光，并提供轴向提示。通过将两个相同的球门置于与莫里斯水迷宫的两个相对侧壁的中心接触的位置，对蜥蜴进行了轴向训练。目标是不可见的，因为它们被放置在水面之下，并且水变得不透明。结果表明，满足学习标准的蜥蜴的方向选择沿训练轴呈双峰分布，并且偏振光的e矢量方向旋转90度后，蜥蜴的方向选择也相应旋转，从而产生了垂直于训练轴。目前的结果证实了先前在其他蜥蜴物种中获得的毁灭性蜥蜴结果，表明这些爬行动物可以以天空偏振罗盘的形式使用偏振光的e矢量方向。研究的第二步旨在回答仍然悬而未决的问题，即天空极化罗盘的功能是否将由蜥蜴的顶眼调节。为了检验这一点，将满足学习标准的蜥蜴的顶眼涂成黑色，然后在偏振光下在莫里斯水迷宫内对其进行测试。顶漆成黑色的蜥蜴完全迷失了方向。因此，本数据首次表明，顶眼在介导蜥蜴的假定天空极化罗盘的功能中起着中心作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号