*BEAST 'four-species' model input file

Input data file in XML format used in *BEAST (multispecies coalescent) species tree analysis of the reduced-cytb dataset in BEAST v1.8.3 under a 'four-species' model grouping sequences into the corresponding three currently recognized species of Amatitlania, as well as A. nigrofasciata samples from Lago Coatepeque formerly known as 'A. coatepeque'. The final section of this file calls a post-run analysis estimating the log-marginal likelihood of the model using path sampling (PS) and stepping-stone (SS) sampling approaches.

本数据集为XML格式输入文件，用于在BEAST v1.8.3软件环境下，借助*BEAST（多物种溯祖）分析框架，对精简型细胞色素b（cytochrome b, cytb）数据集开展物种树分析。该分析采用“四物种模型”，将序列划分为当前公认的3个阿玛特丽鲷属（Amatitlania）物种，以及采自科阿特佩克湖（Lago Coatepeque）、曾被命名为“A. coatepeque”的条纹阿玛特丽鲷（A. nigrofasciata）样本。本文件的最终章节调用运行后分析流程，通过路径采样（PS）与阶梯采样（SS）两种方法估算该模型的对数边际似然值。