基于黑色素的羽毛颜色和谷仓猫头器官中的黑色素含量
Alexandre Roulin1, Sylvain Dubey1,2, Shosuke Ito3
1Department of Ecology and Evolution, University of Lausanne, Biophore Building, CH-1015 Lausanne, Switzerland.
概括
黑色素颜料,对色彩至关重要,集中在的眼睛和皮肤. 它们的产量可以独立调节,影响羽毛颜色和斑点大小.
科学领域:
- 动物学 动物学
- 进化生物学 进化生物学
- 生物化学 生物化学
背景情况:
- 黑色素颜料对于许多物种,特别是鸟类的着色至关重要.
- 虽然外部黑色素的功能已经得到了很好的研究,但内部黑色素的作用在很大程度上是未知的.
- 谷仓猫头 (Tyto alba) 呈现出基于黑色素的红色 (黑色素) 和黑色 (黑色素) 特征的变化.
研究的目的:
- 要量化黑色素颜料度在各种器官的谷仓猫头.
- 研究内部黑色素水平与外部色彩特征之间的关系.
- 探索eumelanin和pheomelanin生产的独立监管. 为了探索eumelanin和pheomelanin生产的独立监管. 为了探索eumelanin和pheomelanin生产的独立监管.
主要方法:
- 在七个器官 (眼睛,皮肤,胸肌,心脏,肝脏,气管,尿腺) 的黑色素度的光谱分析.
- 黑色素度与外部特征 (红色,斑点大小) 之间的相关性分析.
主要成果:
- 眼睛呈现出最高的黑色素度,其次是皮肤.
- 欧梅兰尼和叶梅兰尼度并不总是相关的,这表明独立调节.
- 更红的猫头在皮肤和尿腺中含有更高的叶黄素;更大的斑点猫头在皮肤中含有更高的叶黄素.
结论:
- 黑色素沉积在各个子的器官之间有很大的差异,眼睛和皮肤是主要的部位.
- 支持对eumelanin和pheomelanin生产进行独立监管.
- 需要进一步的研究来将内部黑色素水平与外部特征的进化选择联系起来.
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