Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 117312, Russia.
National Research Center "Kurchatov Institute", Moscow 123182, Russia.
Genomics. 2019 Dec;111(6):1543-1546. doi: 10.1016/j.ygeno.2018.10.012. Epub 2018 Oct 22.
The Steller's sea cow - Hydrodamalis gigas (Dugongidae: Sirenia) - is an extinct herbivorous marine mammal which inhabited the North Pacific Ocean during the Pleistocene and Holocene. H. gigas was the largest member of the Sirenia order and disappeared in the middle of the 18th century. Here, we present the complete sequence of the mitochondrial genome of this extinct animal. The Steller's sea cow mitochondrial DNA (mtDNA) is 16,872 base pairs (bp) in length and contains a set of mitochondrial genes typical for mammals. Phylogenetic analysis based on complete mitochondrial genomes of the sirenian species allows accurate assessment of the degree of their mitogenomic diversification during millions of years of evolution.
斯特勒海牛——Hydrodamalis gigas（儒艮科：海牛目）——是一种已灭绝的草食性海洋哺乳动物，生活在更新世和全新世的北太平洋。H. gigas 是海牛目中最大的成员，于 18 世纪中期灭绝。在这里，我们展示了这种已灭绝动物的完整线粒体基因组序列。斯特勒海牛的线粒体 DNA（mtDNA）长 16872 个碱基对（bp），包含一套典型的哺乳动物线粒体基因。基于海牛物种完整线粒体基因组的系统发育分析，可以准确评估它们在数百万年的进化过程中基因组多样化的程度。
