Color blindness and contrast perception in cuttlefish (Sepia officinalis) determined by a visual sensorimotor assay
Color blindness and contrast perception in cuttlefish (Sepia officinalis) determined by a visual sensorimotor assay
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DOI：
10.1016/j.visres.2005.09.035
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发表时间：
2006-05-01
期刊：
影响因子：
1.8
通讯作者：
Hanlon, RT
中科院分区：
文献类型：
--
作者：
Mäthger, LM;Barbosa, A;Hanlon, RT
我们测试了基于乌贼(乌贼)对视觉刺激(黑白棋盘)做出可量化的、神经控制的运动反应(身体模式)的稳健行为反应的颜色知觉。在第一个实验中，我们创建了16个棋盘基质，其中16个灰色(从白色到黑色)与一个绿色(与药用沙门氏菌唯一视觉色素的最大吸收波长492 nm匹配)配对，以确保其中一个灰色将发出与被测试绿色相似的消色信号。在第二个实验中，我们用一种蓝色和一种黄色创建了一个棋盘，其强度与乌贼的视觉系统相匹配。在这两种测试中，都测试了墨鱼是否会在这些棋盘上显示破坏性的颜色，这表明它们仅根据波长(即颜色)来区分棋盘的能力。在这里，我们清楚地表明乌贼一定是色盲的，因为它们在棋盘上显示出无干扰的颜色，其颜色强度与深褐色视觉系统相匹配，这表明底物在它们的眼睛看来是统一的背景。此外，我们还表明，墨鱼能够感知它们背景中的物体，这些物体的对比度相差约15%。这项研究支持了先前关于药用乌贼是色盲的报道，然而墨鱼如何在色彩丰富的环境中实现“色盲伪装”的问题仍然存在。(C)2005年由爱思唯尔有限公司出版。
We tested color perception based upon a robust behavioral response in which cuttlefish (Sepia officinalis) respond to visual stimuli (a black and white checkerboard) with a quantifiable, neurally controlled motor response (a body pattern). In the first experiment, we created 16 checkerboard substrates in which 16 grey shades (from white to black) were paired with one green shade (matched to the maximurn absorption wavelength of S. officinalis' sole visual pigment, 492 nm), assurning that one of the grey shades would give a similar achromatic signal to the tested green. In the second experiment, we created a checkerboard using one blue and one yellow shade whose intensities were matched to the cuttlefish's visual system. In both assays it was tested whether cuttlefish would show disruptive coloration on these checkerboards, indicating their ability to distinguish checkers based solely on wavelength (i.e., color). Here, we show clearly that cuttlefish must be color blind, as they showed non-disruptive coloration on the checkerboards whose color intensities were matched to the Sepia visual system, suggesting that the substrates appeared to their eyes as uniform backgrounds. Furthermore, we show that cuttlefish are able to perceive objects in their background that differ in contrast by approximately 15%. This study adds support to previous reports that S. officinalis is color blind, yet the question of how cuttlefish achieve "color-blind camouflage" in chromatically rich environments still remains. (c) 2005 Published by Elsevier Ltd.