Colour and contrast of female faces: attraction of attention and its dependence on male hormone status in Macaca fuscata
Colour and contrast of female faces: attraction of attention and its dependence on male hormone status in Macaca fuscata
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DOI：
10.1016/j.anbehav.2014.05.022
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发表时间：
2014-08-01
期刊：
影响因子：
2.5
通讯作者：
Wallner, Bernard
中科院分区：
文献类型：
--
作者：
Pflueger, Lena S.;Valuch, Christian;Wallner, Bernard
颜色信号在广泛的动物物种中的社会和性交流中发挥着重要作用。先前对非人类灵长类动物的研究表明，强烈的雌性皮肤颜色会吸引雄性的注意力。我们研究了（1）性活跃的雄性日本猕猴是否被强烈的雌性皮肤所吸引，（2）对强烈皮肤颜色的偏好是否是由于皮肤区域与其周围环境之间的颜色对比度增加而与红色色度无关，性活跃男性的内分泌状态是否影响其注意选择（或偏好）突出的女性性肤色。我们在两个连续的交配季节进行了两个行为实验。首先，我们在显示器上呈现了两个在自然范围内的红色皮肤着色的女性面部图像。第二，我们提出了相同的面孔解离的红色色度，同时保持其初始的颜色对比度属性。在这两个实验中，我们分析了男性的选择性视觉注意和方法作为刺激类型的函数。每次实验后采集粪便样本，分析病灶雄性的皮质醇和睾酮排泄率。我们发现，女性面部皮肤着色触发社会生活的男性日本猕猴的选择性行为。颜色对比度的差异也引发了男性的选择性定向到一个强烈的彩色脸的形象，但红色的色度仍然是必不可少的，以引起长期的男性兴趣。此外，皮质醇的升高促进了男性对强烈颜色的女性面孔的偏好，这可能是在交配季节高度相关的社会性刺激。未来的研究可能会追求男性注意行为的颜色对比的原则，在整个生殖周期的女性所表达的微妙的颜色变化。在研究交配相关的选择性注意时，应考虑皮质醇相关的生理过程。(C)2014年动物行为研究协会。爱思唯尔有限公司出版
Colour signals play a major role in social and sexual communication in a broad range of animal species. Previous studies on nonhuman primates showed that intense female skin coloration attracts male attention. We investigated (1) whether sexually active male Japanese macaques are attracted by intensely coloured female skin, (2) whether a preference for intense skin coloration results from the increased colour contrast between the skin area and its surroundings irrespective of the red chromaticity, and (3) whether the endocrine status of sexually active males affects their attentional selectivity (or preference) for salient female sexual skin coloration. We conducted two behavioural experiments in two consecutive mating seasons. First, we presented two female face images coloured in a natural range of red skin coloration on monitors. Second, we presented the same faces dissociated from the red chromaticity while maintaining their initial colour contrast properties. In both experiments we analysed male selective visual attention and approaches as a function of stimulus type. Faecal samples were collected after each experiment to analyse focal males' cortisol and testosterone excretion rates. We found that female facial skin coloration triggered selective behaviour in social-living male Japanese macaques. Variances in colour contrast also triggered males' selective orienting towards an intensely coloured face image but the red chromaticity remained essential to induce prolonged male interest. Furthermore, elevated cortisol facilitated male preferences for the intensely coloured female faces, sociosexual stimuli that are presumably highly relevant during the mating season. Future studies may pursue the principle of colour contrast in male attentional behaviour with respect to subtle colour changes expressed by females throughout the reproductive cycle. Cortisol-related physiological processes should be considered in studies on mating-relevant selective attention. (C) 2014 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd.