Do capuchin monkeys (Sapajus apella) prefer symmetrical face shapes?
Do capuchin monkeys (Sapajus apella) prefer symmetrical face shapes?
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DOI：
10.1037/com0000052
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发表时间：
2017-02
期刊：
影响因子：
--
通讯作者：
Lonsdorf E
中科院分区：
文献类型：
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作者：
Paukner A;Wooddell LJ;Lefevre CE;Lonsdorf E;Lonsdorf E
在人类中，面部对称性与个体的遗传质量有关，面部对称性对面部吸引力的评级有很小但很重要的影响。这些现象背后的相同进化过程也可能向其他灵长类物种的对称个体传达选择性优势，但迄今为止，很少有研究考察非人类灵长类动物对面部对称性的敏感性。在这里，我们提出了对称和不对称的人类和猴子的脸的图像簇绒卷尾猴（Sapajus apella），并假设卷尾猴会在视觉上更喜欢异性的对称面孔。相反，我们发现，男性卷尾猴优先出席对称的男性同种面孔，而女性卷尾猴似乎没有区分对称和不对称的面孔。这些结果表明，雄性卷尾猴可能会使用面部对称性来判断男性内部竞争的质量。
In humans, facial symmetry has been linked to an individual's genetic quality, and facial symmetry has a small yet significant effect on ratings of facial attractiveness. The same evolutionary processes underlying these phenomena may also convey a selective advantage to symmetrical individuals of other primate species, yet to date, few studies have examined sensitivity to facial symmetry in non-human primates. Here we presented images of symmetrical and asymmetrical human and monkey faces to tufted capuchin monkeys (Sapajus apella), and hypothesized that capuchins would visually prefer symmetrical faces of opposite sex conspecifics. Instead, we found that male capuchins preferentially attended to symmetrical male conspecific faces whereas female capuchins did not appear to discriminate between symmetrical and asymmetrical faces. These results suggest that male capuchin monkeys may use facial symmetry to judge male quality in intra-male competition.