Two pieces of information in a single trait? The yellow breast of the great tit (Parus major) reflects both pigment acquisition and body condition
Two pieces of information in a single trait? The yellow breast of the great tit (Parus major) reflects both pigment acquisition and body condition
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一个特征中包含两条信息？
DOI：
10.1163/156853908785387638
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发表时间：
2008
期刊：
影响因子：
1.3
通讯作者：
Negro
中科院分区：
文献类型：
--
作者：
Quesada;Senar;Ruiz;Garrido;Negro
基于类胡萝卜素的羽毛颜色已被证明取决于色素含量和羽毛结构。在此背景下，我们预测羽毛色素含量和羽毛色调之间的关系。此外，鉴于羽毛结构的发育扰动的色度的敏感性，我们预测身体状况与色度。我们在大山雀Parus major身上验证了这些预测。采用高效液相色谱法（HPLC）分析了黄胸羽中类胡萝卜素的含量。叶黄素是大山雀羽毛中主要的类胡萝卜素，其次是玉米黄质。羽毛的色调准确地预测从他们的叶黄素浓度，和色度预测从身体状况值。我们的数据表明，大山雀的羽毛颜色可以独立地提供信息的信号收集类胡萝卜素（通过色调）和身体状况（通过色度）的能力。已发表的大山雀和其他物种的研究结果都支持这一观点。
Carotenoid-based plumage coloration has been shown to be dependent both on pigment content and feather structure. Against this background, we predict a relationship between feather pigment content and plumage hue. Furthermore, given the susceptibility of chroma to developmental perturbation of feather structure, we predict body condition to be related to chroma. We tested these predictions in the great tit, Parus major. Carotenoid content in yellow breast feathers was analysed by high-performance liquid chromatography (HPLC). Lutein was the main carotenoid contained in great tit feathers, followed by zeaxanthin. The hue of the feathers was accurately predicted from their lutein concentration, and chroma was predicted from the body condition value. Our data suggest that plumage coloration in the great tit could independently provide information on the ability of the signaller to collect carotenoids (via hue) and body condition (via chroma). Published results both from the great tit and other species support this view.