Using historical biogeography models to study color pattern evolution.
Using historical biogeography models to study color pattern evolution.
复制标题
使用历史生物地理学模型研究颜色图案的演变。
作者：
Chad M. Eliason;Michael J. Andersen;S. Hackett
颜色是生物体最显著的特征之一，它不仅在色调和亮度等光谱特性上有所不同，而且在身体产生颜色的位置和方式上也有所不同。鸟类身体上不同的颜色组合在环境和社会背景下都很重要。以前的比较研究是单独处理羽毛斑块，或者从鸟类身体的颜色测量中得出羽毛复杂性评分。然而，这些方法没有考虑到羽毛的多变量特性（允许羽毛作为一个整体进化）或考虑斑块间距离。在这里，我们利用历史生物地理学中使用的丰富工具包来评估鸟类，翠鸟（鸟类：Alcedinidae）的世界性辐射的颜色模式进化。我们展示了这种方法的实用性，并测试了翠鸟颜色进化的速度和模式的假设。我们的研究结果强调了考虑斑块间距离对理解羽毛颜色多样性宏观进化趋势的重要性，并证明了历史生物地理学模型是如何有效地模拟羽毛颜色模式进化的。此外，他们还表明，不同的颜色机制（色素或结构色）以不同的方式和速度在身体中传播。具体来说，结构色的净率高于基于颜料的色。总之，我们的研究表明，发展和选择在推动翠鸟非凡的颜色模式多样性方面都起着重要作用。我们预计这种方法将用于除颜色外的其他复杂表型的建模，例如寄生虫在全身的进化。
Color is among the most striking features of organisms, varying not only in spectral properties like hue and brightness, but also in where and how it is produced on the body. Different combinations of colors on a bird's body are important in both environmental and social contexts. Previous comparative studies have treated plumage patches individually or derived plumage complexity scores from color measurements across a bird's body. However, these approaches do not consider the multivariate nature of plumages (allowing for plumage to evolve as a whole) or account for interpatch distances. Here, we leverage a rich toolkit used in historical biogeography to assess color pattern evolution in a cosmopolitan radiation of birds, kingfishers (Aves: Alcedinidae). We demonstrate the utility of this approach and test hypotheses about the tempo and mode of color evolution in kingfishers. Our results highlight the importance of considering interpatch distances in understanding macroevolutionary trends in color diversity and demonstrate how historical biogeography models are a useful way to model plumage color pattern evolution. Furthermore, they show that distinct color mechanisms (pigments or structural colors) spread across the body in different ways and at different rates. Specifically, net rates are higher for structural colors than pigment-based colors. Together, our study suggests a role for both development and selection in driving extraordinary color pattern diversity in kingfishers. We anticipate this approach will be useful for modeling other complex phenotypes besides color, such as parasite evolution across the body.
影响因子：
10.7
作者：
Baele, Guy;Lemey, Philippe;Alekseyenko, Alexander V.
通讯作者：
Alekseyenko, Alexander V.
影响因子：
6.5
作者：
Landis, Michael J.;Matzke, Nicholas J.;Huelsenbeck, John P.
通讯作者：
Huelsenbeck, John P.