Color vision in the black howler monkey (Alouatta caraya)
Color vision in the black howler monkey (Alouatta caraya)
复制标题
DOI：
10.1017/s0952523808080292
复制
发表时间：
2008-05-01
影响因子：
1.9
通讯作者：
Pessoa, Valdir F.
中科院分区：
文献类型：
--
作者：
Araujo, Antonio C.;Didonet, Julia J.;Pessoa, Valdir F.
电生理学和分子遗传学研究表明，吼猴（Alouatta）是所有研究的阔鼻类动物中唯一的：它们有潜力在男性和女性中显示三色色觉。本研究采用辨别学习的行为范式，通过一系列任务考察了四只吼猴的颜色辨别能力。将动物作为一组饲养在巴西利亚动物园，并在其自己的饲养笼中进行试验。由成对的孟塞尔色卡组成的刺激以随机亮度值呈现，以确保区分是基于颜色而不是亮度线索。所有的动物（三只雄性，一只雌性）都成功地区分了所有的刺激对，包括那些对二色视猴来说很难区分的刺激对。这些结果与早期的预测一致，即吼猴通常是三色的。
Electrophysiological and molecular genetic studies have shown that howler monkeys (Alouatta) are unique among all studied platyrrhines: they have the potential to display trichromatic color vision among males and females. This study examined the color discrimination abilities of four howler monkeys (Alouatta caraya) through a series of tasks involving a behavioral paradigm of discrimination learning. The animals were maintained and housed as a group in the Zoological Gardens of Brasilia and were tested in their own home cages. Stimuli consisting of pairs of Munsell color chips were presented in random brightness values to assure that discriminations were based on color rather than brightness cues. All the animals (three males, one female) successfully discriminated all the stimulus pairs, including those that would be expected to be difficult for a dichromatic monkey. These results are consistent with the earlier predictions suggesting that howler monkeys are routinely trichromatic.