Wilson's storm-petrel (Oceanites oceanicus, family Oceanitidae, order Procellariiformes) breeds in rock cavities along the ice-free coastline of Antarctica, a habitat susceptible to environmental change and human disturbance. Despite extensive presence, high numbers and wide-ranging movement, there are taxonomic ambiguities surrounding species' phylogenetic positioning and data gaps for most parts of its range. In this study, we provide support to the phylogenetic status of family Oceanitidae through new genetic datasets and modern analytical approaches. We generated mitochondrial cytochrome b gene sequences from samples collected from east Antarctica's ice-free regions. Reconstructed trees obtained using Bayesian and maximum likelihood models show Oceanitidae as a monophyletic group where Hydrobatidae (northern storm-petrels) appeared as a basal group to the order Procellariiformes. Phylogeographic network analysis resulted in seven distinct haplotypes with strong genetic differentiation (F_ST > 0.99) between east Antarctic and sub-Antarctic populations. Our study provides one of the first genetic datasets on Wilson's storm-petrel populations in east Antarctica. It serves as a baseline to undertake rigorous investigations into species' population structure, genetic connectivity and demographic responses to human-mediated changes in the austral environment.

威尔逊风暴海燕（Oceanites oceanicus ，Oceanitidae 科，Procellariiformes）在南极洲无冰海岸线的岩洞中繁殖，这是一个容易受到环境变化和人类干扰的栖息地。尽管存在广泛、数量众多且活动范围广泛，但物种的系统发育定位和大部分范围内的数据差距仍存在分类学上的模糊性。在这项研究中，我们通过新的遗传数据集和现代分析方法为海洋生物科的系统发育状况提供支持。我们从南极洲东部无冰地区采集的样本生成了线粒体细胞色素b基因序列。使用贝叶斯和最大似然模型获得的重建树显示Oceanitidae是一个单系类群，其中Hydrobatidae（北方风暴海燕）作为Procellariiformes目的基础类群出现。谱系地理学网络分析得出了南极东部和亚南极种群之间具有强烈遗传分化（ F _{ST > 0.99）的七种不同的单倍型。}我们的研究提供了关于南极洲东部威尔逊风暴海燕种群的首批遗传数据集之一。它作为对物种种群结构、遗传连通性和人口对人类介导的南方环境变化的反应进行严格调查的基线。