The Anhui Provincial Key Laboratory of Biodiversity Conservation and Ecological Security in the Yangtze River Basin, College of Life Sciences, Anhui Normal University, Wuhu 241000, China.
College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China.
Int J Mol Sci. 2024 Sep 22;25(18):10181. doi: 10.3390/ijms251810181.
The Siberian Scoter () is a medium sea duck distinct from due to the absence of hybridization and differences in morphological characteristics. However, knowledge of its phylogenetic relationships within Anseriformes is limited due to a lack of molecular data. In this study, the complete mitogenome of was firstly sequenced, then annotated and used to reconstruct the phylogenetic relationships of 76 Anseriformes species. The complete mitogenome of is 16,631 bp and encodes 37 typical genes: 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs, and 1 non-coding control region. Its mitogenome organization is similar to that of other Anseriformes species. The phylogenetic relationships within the genus are initially clarified, with at the base. and are sister groups, clustering with and in order. Phylogenetic analysis suggests that and are sister groups, differing from previous studies. Results firstly indicate that and are sister groups, suggesting a potentially skewed phylogenetic relationship may have been overlooked in earlier analyses relying solely on mitochondrial genomes. Our results provide new mitogenome data to support further phylogenetic and taxonomic studies of Anseriformes.
角嘴海雀（）是一种中型海鸭，与（）不同，因为它们没有杂交，而且在形态特征上也有差异。然而，由于缺乏分子数据，人们对角嘴海雀在雁形目内的系统发育关系的了解有限。在本研究中，我们首先对的完整线粒体基因组进行了测序，然后对其进行注释，并用于重建 76 种雁形目物种的系统发育关系。的完整线粒体基因组长 16631bp，编码 37 个典型基因：13 个蛋白质编码基因、2 个核糖体 RNA、22 个转移 RNA 和 1 个非编码控制区。其线粒体基因组组织与其他雁形目物种相似。初步阐明了角嘴海雀属内的系统发育关系，以（）为基础。和（）是姐妹群，与（）和（）依次聚类。系统发育分析表明，和（）是姐妹群，与之前的研究不同。结果首次表明，和（）是姐妹群，这表明在以前仅依赖线粒体基因组的分析中，可能忽略了潜在的倾斜的系统发育关系。我们的结果提供了新的线粒体基因组数据，以支持对雁形目进一步的系统发育和分类学研究。
