Kurchatov Center for Genomic Research, National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
Limited Liability Company ELGENE, 109029 Moscow, Russia.
Genes (Basel). 2022 Oct 27;13(11):1961. doi: 10.3390/genes13111961.
Significant palaeoecological and paleoclimatic changes that took place during Late Pleistocene-Early Holocene transition are considered important factors that led to megafauna extinctions. Unlike many other species, the brown bear () has survived this geological time. Despite the fact that several mitochondrial DNA clades of brown bears became extinct at the end of the Pleistocene, this species is still widely distributed in Northeast Eurasia. Here, using the ancient DNA analysis of a brown bear individual that inhabited Northeast Asia in the Middle Holocene (3460 ± 40 years BP) and comparative phylogenetic analysis, we show a significant mitochondrial DNA similarity of the studied specimen with modern brown bears inhabiting Yakutia and Chukotka. In this study, we clearly demonstrate the maternal philopatry of the Northeastern Eurasian population during the several thousand years of the Holocene.
发生在晚更新世-全新世过渡期间的重大古生态和古气候变化被认为是导致大型动物灭绝的重要因素。与许多其他物种不同，棕熊（）在这段地质时期幸存了下来。尽管棕熊的几个线粒体 DNA 进化枝在更新世末期灭绝，但该物种仍广泛分布于东北欧亚大陆。在这里，我们利用生活在中全新世（3460±40 年前）的东北亚棕熊个体的古 DNA 分析和比较系统发育分析，表明研究标本与现代生活在雅库特和楚科奇的棕熊具有显著的线粒体 DNA 相似性。在这项研究中，我们清楚地证明了东北欧亚种群在几千年的全新世中具有母系亲缘关系。
