Behavioral Measure of the Light-Adapted Visual Sensitivity of White-Tailed Deer
Behavioral Measure of the Light-Adapted Visual Sensitivity of White-Tailed Deer
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DOI：
10.1002/wsb.438
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发表时间：
2014-09-01
影响因子：
1.5
通讯作者：
Miller, Karl V.
中科院分区：
文献类型：
--
作者：
Cohen, Bradley S.;Osborn, David A.;Miller, Karl V.
虽然白尾鹿（Odocoileus virginianus）的生物学和生理学的许多方面已经被彻底研究，但很少有研究研究鹿的感知。我们获得了一个行为措施的光适应视觉灵敏度的基础上的表现7鹿在强迫选择的歧视测试。我们比较了强度阈值在其声称的可见光谱的短波长和长波长。利用自动化训练设备，我们训练鹿区分表达单色波长的发光二极管（LED）灯，并记录每个波长的一系列降低强度的表现，直到鹿不再能区分光刺激。我们回归了一个最佳拟合的逻辑函数，以每只鹿的表现为强度下降，在一个单一的波长，划定的敏感性阈值，该波长，并比较鹿的敏感性阈值在波长。我们的行为为基础的敏感性测量同意与以前的估计白尾鹿的视锥感光敏感性。我们证实，这些锥光感受器有助于鹿的行为，鹿有一个更大的感知灵敏度较短的波长和较低的敏感度较长的波长。我们的研究结果还表明，鹿对紫外线有一定的敏感性。白尾鹿的视觉感知是专门的敏感性，在他们的黄昏模式，使检测的捕食者沿着他们的地平线，是很好地适应了猎物的物种。(C)2014野生动物协会
Although many aspects of white-tailed deer (Odocoileus virginianus) biology and physiology have been studied thoroughly, few studies have examined deer perception. We obtained a behavioral measure of light-adapted visual sensitivity based on performance of 7 deer in forced-choice discrimination tests. We compared intensity thresholds at the short and long wavelengths of their purported visual spectrum. Utilizing an automated training device, we trained deer to discriminate between lit and unlit light-emitting diode (LED) lights expressing monochromatic wavelengths, and recorded performance across a series of decreasing intensities for each wavelength until deer could no longer discriminate the light stimulus. We regressed a best-fit logistic function to each deer's performance as intensity decreased at a single wavelength, demarcated the sensitivity threshold to that wavelength, and compared deer's sensitivity threshold across wavelengths. Our behavior-based sensitivity measurements agreed with previous estimates of white-tailed deer's cone photoreceptor sensitivity. We confirm that these cone photoreceptors contribute to deer behavior, and that deer have a greater perceptual sensitivity to shorter wavelengths and lower sensitivity to longer wavelengths. Our findings also suggest the deer have some sensitivity to ultraviolet light. The visual perception of the white-tailed deer is specialized for sensitivity during their crepuscular patterns, enables detection of predators along their horizon, and is well-adapted for a prey species. (C) 2014 The Wildlife Society.