Dietary carotenoid availability affects avian color discrimination
Dietary carotenoid availability affects avian color discrimination
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膳食类胡萝卜素的可用性影响鸟类颜色辨别
DOI：
10.1093/beheco/arw116
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发表时间：
2016
影响因子：
2.4
通讯作者：
Lim H
中科院分区：
文献类型：
--
作者：
Lim H
类胡萝卜素存在于许多脊椎动物的视网膜中，具有多种功能。在鸟类中，含有类胡萝卜素的视网膜油滴起到了滤光器的作用，改变了到达底层视觉色素的光线，从而增强了色觉。众所周知，饮食类胡萝卜素会影响类胡萝卜素在视网膜上的分配，尽管这对视力的影响还不太清楚。通过饮食操作，日本鹌鹑幼崽（Coturnix japonica）接受高或低类胡萝卜素的饮食，我们测试了类胡萝卜素的可用性对执行颜色识别任务的能力的影响。接受两种饮食治疗的鸟类都能够对人类认为是黄橙色和橙色的颜色做出相对粗略的区分；然而，只有高类胡萝卜素饮食的鸟类能够对中间颜色进行更精细的区分，这表明饮食中的类胡萝卜素可直接影响鸟类进行颜色区分的能力。这一发现有助于我们理解类胡萝卜素在视觉和其他关键功能（如性装饰和健康维护）之间的权衡分配，并表明饮食中类胡萝卜素可用性的变化可能会影响动物进行生态相关颜色区分的能力，例如性信号或隐藏食物之间的颜色区分。
Carotenoid pigments are found in the retinas of many vertebrate species, where they serve a range of functions. In birds, carotenoid-containing retinal oil droplets act as optical filters, modifying the light reaching the underlying visual pigment and thereby enhancing color vision. Dietary carotenoid manipulation is known to affect the allocation of carotenoids to the retina, although the effects this has on vision are less well understood. Using dietary manipulations, in which juvenile Japanese quail (Coturnix japonica) received either a high- or a low-carotenoid diet, we tested the effects of carotenoid availability on the ability to perform a color discrimination task. Birds on both diet treatments were able to make a relatively coarse discrimination between colors that appeared to humans as yellow-orange and orange; however, only high-carotenoid diet birds were able to make a finer-scale discrimination involving intermediate colors, showing that dietary carotenoid availability can directly affect the ability of birds to make chromatic discriminations. This finding has implications for our understanding of trade-offs in carotenoid allocation between vision and other key functions such as sexual ornamentation and health maintenance, and suggests that variation in dietary carotenoid availability may affect the ability of animals to make ecologically pertinent color discriminations, such as between sexual signals or cryptic food items.
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免疫系统激活会消耗家雀（Carpodacus mexicanus）视网膜中的类胡萝卜素
影响因子：
2.8
作者：
Matthew B. Toomey;M. W. Butler;K. McGraw
通讯作者：
K. McGraw
DOI：
--
发表时间：
2015-10
期刊：
--
影响因子：
--
作者：
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通讯作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
饮食中的类胡萝卜素补充和视网膜类胡萝卜素积累对视力介导的觅食的影响。
影响因子：
3.7
作者：
Toomey MB;McGraw KJ
通讯作者：
McGraw KJ
影响因子：
2.5
作者：
Blount, Jonathan D.;Matheson, Stephanie M.
通讯作者：
Matheson, Stephanie M.
DOI：
10.1098/rspb.2009.1805
发表时间：
2010-03-22
影响因子：
4.7
作者：
Knott, Ben;Berg, Mathew L.;Bennett, Andrew T. D.
通讯作者：
Bennett, Andrew T. D.