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The color vision typing using fecal DNA of New World monkeys and the analysis of vision-behavior relatedness

新世界猴粪便DNA色觉分型及视觉行为相关性分析

基本信息

批准号：
16405015
负责人：
KAWAMURA Shoji
金额：
$ 8.45万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16405015/
关键词：
color vision visual pigment opsin New World monkeys evolution primates international collaboration Costa Rica コスタリカ:カナダ:イギリスオマキザルクモザル

项目摘要

Color vision polymorphism in New World monkeys results from allelic variation of the single-locus middle-to-long-wave-sensitive (M/LWS) opsin gene residing on the X-chromosome. This polymorphism is trans-specific, and thus generally believed to be maintained by some form of balancing selection. However, the presence of balancing selection has not been tested rigorously by population genetic parameters. At the level of a social group, which usually comprises no more than a few dozen individuals, presence or absence of color vision polymorphism is not well assessed. In addition, the advantage of trichromacy to primates is not entirely clear in the Neotropic environment, since many of the food resources that are available throughout the year appear cryptic to human observers.To investigate the mechanism behind the persistence of color vision polymorphism in New World monkeys, we examined free-ranging populations of white-faced capuchin monkeys (Cebus capucinus) and black-handed spider mon … More keys (Ateles geoffroyi) inhabiting Santa Rosa National Park, Costa Rica. We took a three-pronged approach : (1) assessment of color vision polymorphism in social groups by genotyping M/LWS opsin alleles using fecal DNA, (2) tests of the neutral hypothesis by evaluating nucleotide diversity of the M/LWS opsin gene, and (3) assessment of the behavioral significance of color vision variation by looking for correlations between color vision type and behavioral patterns such as foraging.We found that : (1) color vision polymorphism is indeed present in both capuchin and spider monkey groups, each comprising only 〜20 individuals, but with various allele compositions between groups and between species, (2) Tajima's D statistic is significantly positive for M/LWS opsin gene but it is not for the neutral controls, and (3) dichromatic capuchins are more efficient at insect foraging, and hue of fruits may not be a critical cue for trichromatic spider monkeys. These results indicate that the high level of color vision polymorphism can be explained only by some form of balancing selection, which would likely include factors other than heterozygote (= trichromat) advantage. Less

新世界猴的色觉多态性是由位于X染色体上的单位点中长波敏感（M/LWS）视蛋白基因的等位基因变异引起的。这种多态性是反式特异性的，因此通常认为是通过某种形式的平衡选择来维持的。然而，平衡选择的存在还没有得到严格的群体遗传参数的测试。在一个社会群体的水平上，通常不超过几十个人，色觉多态性的存在或不存在没有得到很好的评估。此外，在新热带环境中，灵长类动物的三色视觉优势并不完全清楚，因为全年可获得的许多食物资源对人类观察者来说似乎是神秘的。为了研究新世界猴中色觉多态性持续存在背后的机制，我们检查了自由放养的白脸卷尾猴（Cebus capucinus）和黑手蜘蛛猴（Black-handed spider monkey）。 ...更多信息居住在哥斯达黎加的圣罗莎国家公园的礁（Ateles geoffroyi）。我们采取了三管齐下的方法：（1）通过使用粪便DNA对M/LWS视蛋白等位基因进行基因分型来评估社会群体中的色觉多态性，（2）通过评估M/LWS视蛋白基因的核苷酸多样性来检验中性假设，以及（3）通过寻找色觉类型和行为模式（例如觅食）之间的相关性来评估色觉变化的行为意义。（1）色觉多态性确实存在于卷尾猴和蜘蛛猴两个群体中，每个群体仅包括1020个个体，但在群体之间和物种之间具有不同的等位基因组成，（2）Tajima的D统计量对于M/LWS视蛋白基因是显著正的，但对于中性对照不是，和（3）二色性卷尾猴在昆虫觅食方面更有效，水果的颜色可能不是三色蜘蛛猴的关键线索。这些结果表明，高水平的色觉多态性只能解释为某种形式的平衡选择，这可能包括杂合子（=三色）优势以外的因素。少