Dynamic polarization vision in mantis shrimps.
Dynamic polarization vision in mantis shrimps.
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DOI：
10.1038/ncomms12140
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发表时间：
2016-07-12
影响因子：
16.6
通讯作者：
Roberts NW
中科院分区：
文献类型：
--
作者：
Daly IM;How MJ;Partridge JC;Temple SE;Marshall NJ;Cronin TW;Roberts NW
凝视稳定是一种几乎无处不在的动物行为，需要清楚地看到世界而不模糊。然而，口足类动物只是偶尔将眼睛固定在感兴趣的场景或物体上。在动物中几乎是独一无二的，它们通过眼睛的一系列俯仰、偏航和扭转（滚动）旋转来探索它们的视觉环境，其中每只眼睛也可以在很大程度上独立于另一只眼睛移动。在这项工作中，我们证明了扭转旋转是用来积极提高他们的能力，看到光的偏振。斯氏膝趾虎和青蟹都旋转它们的眼睛，以使特定的光感受器相对于线性偏振视觉刺激的偏振角对准，从而最大化感兴趣的物体与其背景之间的偏振对比度。这是第一个记录的任何动物显示动态偏振视觉的例子，其中偏振信息通过旋转眼球运动被主动最大化。 螳螂虾是众所周知的显示大俯仰，偏航和扭转眼睛旋转。在这里，作者表明，这些眼球运动允许螳螂虾定向特定的感光器，以更好地区分光的偏振。
Gaze stabilization is an almost ubiquitous animal behaviour, one that is required to see the world clearly and without blur. Stomatopods, however, only fix their eyes on scenes or objects of interest occasionally. Almost uniquely among animals they explore their visual environment with a series pitch, yaw and torsional (roll) rotations of their eyes, where each eye may also move largely independently of the other. In this work, we demonstrate that the torsional rotations are used to actively enhance their ability to see the polarization of light. Both Gonodactylus smithii and Odontodactylus scyllarus rotate their eyes to align particular photoreceptors relative to the angle of polarization of a linearly polarized visual stimulus, thereby maximizing the polarization contrast between an object of interest and its background. This is the first documented example of any animal displaying dynamic polarization vision, in which the polarization information is actively maximized through rotational eye movements. Mantis shrimps are known to display large pitch, yaw and torsional eye rotations. Here, the authors show that these eye movements allow mantis shrimp to orientate particular photoreceptors in order to better discriminate the polarization of light.