Data from: Convergent evolution of phenotypic integration and its alignment with morphological diversification in Carribean Anolis ecomorphs

The adaptive landscape and the G-matrix are keys concepts for understanding how quantitative characters evolve during adaptive radiation. In particular, whether the adaptive landscape can drive convergence of phenotypic integration (i.e., the pattern of phenotypic variation and covariation summarized in the P-matrix) is not well studied. We estimated and compared P for 19 morphological traits in eight species of Caribbean Anolis lizards, finding that similarity in P among species was not correlated with phylogenetic distance. However, greater similarity in P among ecologically similar Anolis species (i.e., the trunk-ground ecomorph) suggests the role of convergent natural selection. Despite this convergence and relatively deep phylogenetic divergence, a large portion of eigenstructure of P is retained among our 8 focal species. We also analyzed P as an approximation of G to test for correspondence with the pattern of phenotypic divergence in 21 Caribbean Anolis species. These patterns of covariation were coincident, suggesting that either genetic constraint has influenced the pattern of among-species divergence or, alternatively, that the adaptive landscape has influenced both G and the pattern of phenotypic divergence among species. We provide evidence for convergent evolution of phenotypic integration for one class of Anolis ecomorph, revealing yet another important dimension of evolutionary convergence in this group.适应性景观（adaptive landscape）与G矩阵（G-matrix）是阐释数量性状在适应辐射过程中演化规律的核心概念。当前针对适应性景观能否驱动表型整合（即由P矩阵（P-matrix）概括的表型变异与协变模式）趋同演化的研究仍相对不足。 我们对8种加勒比安乐蜥（Caribbean Anolis lizard）的19个形态性状的P矩阵进行了估算与比较，发现物种间P矩阵的相似度与系统发育距离并无显著相关性。但生态习性相似的安乐蜥类群（即躯干-地面生态型）之间的P矩阵相似度更高，这提示趋同自然选择在此过程中发挥了作用。 尽管存在这类趋同演化现象且物种间系统发育分化较深，但我们所研究的8个目标物种的P矩阵仍保留了大量共有的特征结构。 我们还以P矩阵近似G矩阵，以此检验其与21种加勒比安乐蜥的表型分化模式的对应性。结果显示二者的协变模式高度一致，这表明要么是遗传约束（genetic constraint）影响了物种间的分化模式，要么是适应性景观同时对G矩阵与物种间的表型分化模式产生了塑造作用。 本研究为安乐蜥某一类生态型的表型整合趋同演化提供了实证证据，进一步揭示了该类群演化趋同的又一重要维度。