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首页> 美国卫生研究院文献>Proceedings of the Royal Society B: Biological Sciences >Ultraviolet vision fluorescence and mate choice in a parrot the budgerigar Melopsittacus undulatus.
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Ultraviolet vision fluorescence and mate choice in a parrot the budgerigar Melopsittacus undulatus.

机译：鹦鹉虎皮鹦鹉Melopsittacus undulatus的紫外线视野荧光和配偶选择。

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As in many parrots, the plumage of the budgerigar Melopsittacus undulatus reflects near-ultraviolet (UVA) wavelengths (300-400 nm) and exhibits UVA-induced fluorescence. However, there have, to our knowledge, been no tests of whether the yellow fluorescence observed under intense UVA illumination has any role in signalling. Four experiments were carried out on wild-type budgerigars, where the presence and absence of UV reflectance and fluorescence were manipulated using filters. Few studies have attempted to separate the contribution of UV reflectance to plumage hue as opposed to brightness or distinguish between a role in sexual as opposed to social preferences. However, our first experiments show that not only do females consistently prefer UV-reflecting males, but also that the observed preferences are due to removal of UV affecting the perceived hue rather than brightness. Furthermore, we found no effect of the light environment on male response to females, suggesting that the female preferences relate to plumage colour per se. Whilst UV reflectance appears important in heterosexual choice by females, it has no detectable influence on same-sex association preferences. The results from the second series of experiments suggest that enhancement of the budgerigar's yellow coloration through fluorescence has no effect on male attractiveness. However, the fluorescent plumage may play a role in signalling by virtue of the fact that it absorbs UVA and so increases contrast with nearby UV-reflecting plumage. Our study provides convincing evidence that UV reflectances can play a role in mate choice in non-passerines, but no evidence that the yellow fluorescence observed under UVA illumination is itself important as a signal.
机译：像许多鹦鹉一样，虎皮鹦鹉Melopsittacus undulatus的羽毛反射近紫外线（UVA）波长（300-400 nm），并表现出UVA诱导的荧光。然而，据我们所知，尚无关于在强UVA照射下观察到的黄色荧光是否在信号传导中起作用的测试。在野生型虎皮鹦鹉上进行了四个实验，其中使用滤光片控制是否存在紫外线反射率和荧光。很少有研究试图将紫外线反射对羽毛色彩的贡献与亮度分开，或区分性行为的作用与社会偏好之间的区别。但是，我们的第一个实验表明，不仅女性始终喜欢反射紫外线的男性，而且观察到的偏爱是由于去除了影响感知色相而不是亮度的紫外线所致。此外，我们发现光照环境对雄性对雌性的反应没有影响，这表明雌性的偏好本身与羽毛的颜色有关。尽管紫外线反射在女性的异性恋选择中似乎很重要，但对同性交往偏好没有可检测的影响。第二系列实验的结果表明，通过荧光增强虎皮鹦鹉的黄色着色对男性的吸引力没有影响。然而，由于荧光羽毛吸收紫外线并因此增加了与附近反射紫外线的羽毛的对比度，因此可以在信号传导中发挥作用。我们的研究提供了令人信服的证据，表明紫外线反射可以在非雀形目鸟的配偶选择中起作用，但是没有证据表明在紫外线照射下观察到的黄色荧光本身作为信号很重要。

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