Supplemental Figure 5

Figure S5. Ancestral state reconstruction of the observed and hidden state combinations in Afrobatrachian frogs from the best-fit HiSSE model (HiSSE 19; Table 1). Squares at tips are colored by the observed character states (yellow: monochromatic, blue: sexually dichromatic), whereas node pie charts represent the probability of a state assignment to: 1) monochromatism + hidden state absent (yellow), 2) monochromatism + hidden state present (orange), 3) dichromatism + hidden state absent (blue), or 4) dichromatism + hidden state present (purple). No instance of the monochromatism + hidden state present is reconstructed on the phylogeny, whereas a transition to the dichromatism + hidden state present combination is inferred once in the MRCA of two monotypic genera (Cryptothylax, Morerella), indicating a near absence of the hidden state across the entire tree.

补充图S5。针对非洲蛙类支系的观测状态与隐藏状态组合，基于最优拟合的HiSSE模型（HiSSE 19；表1）完成的祖先状态重建。系统发育树末端的方块按观测性状状态着色（黄色：单色性，蓝色：性二色性）；节点处的饼图则代表各状态归属的概率，分别为：1）单色性+隐藏状态缺失（黄色）、2）单色性+隐藏状态存在（橙色）、3）性二色性+隐藏状态缺失（蓝色）、4）性二色性+隐藏状态存在（紫色）。该系统发育树上未重建出“单色性+隐藏状态存在”的实例；而在隐囊蛙属（Cryptothylax）与莫雷拉蛙属（Morerella）这两个单型属的最近共同祖先（MRCA）处，推断出一次向“性二色性+隐藏状态存在”组合的演化转变，表明整个系统发育树中几乎不存在隐藏状态。