Recent population differentiation in the habitat specialist Glossy Antshrike (Aves: Thamnophilidae) across Amazonian seasonally flooded forests: Complete matrix

We assessed population structure and the spatio-temporal pattern of diversification in the Glossy Antshrike Sakesphorus luctuosus (Aves, Thamnophilidae) to understand the processes shaping the evolutionary history of Amazonian floodplains and address unresolved taxonomic controversies surrounding its species limits. By targeting ultraconserved elements (UCEs) from 32 specimens of S. luctuosus, we identified independent lineages and estimated their differentiation, divergence times and migration rates. We also estimated current and past demographic histories for each recovered lineage. We found evidence confirming that S. luctuosus consists of a single species, comprising at least four populations, with some highly admixed individuals and overall similar levels of migration between populations. We confirmed the differentiation of the Araguaia River basin population (S. l. araguayae), and gathered circumstantial evidence indicating that the taxon S. hagmanni may represent a highly introgr...我们以亮黑蚁鵙（Glossy Antshrike, Sakesphorus luctuosus，隶属于鸟纲Aves、蚁鵙科Thamnophilidae）为研究对象，评估其种群结构与物种分化的时空格局，旨在阐明塑造亚马逊泛滥平原演化历史的核心过程，并解决围绕该物种种级界定的未决分类学争议。本研究通过靶向捕获32份该物种样本的超保守元件（ultraconserved elements, UCEs），鉴定出独立演化支系，并估算了各支系的分化水平、分化时间与基因流速率。此外，我们还为每个鉴定得到的支系重建了当前与历史种群动态历史。研究结果证实，亮黑蚁鵙为单一物种，其下至少包含4个种群，部分个体存在高度的种群基因混合，且种群间的基因流整体水平相近。我们验证了阿拉瓜亚河流域种群（S. l. araguayae）的分化水平，并收集到间接证据，显示S. hagmanni这一分类单元可能属于高度基因渐渗...