Supporting data for "Whole-genome re-sequencing of the Baikal seal and other phocid seals for a glimpse into their genetic diversity, demographic history, and phylogeny"

The iconic Baikal seal (<i>Pusa sibirica</i>), the smallest true seal, is a freshwater seal that is endemic to Lake Baikal where it became landlocked some million years ago. It is a rather abundant species of least concern, despite the limited habitat. Until recently, research on its genetic diversity has only been done on mitochondrial genes, restriction fragment analyses, and microsatellites, before its reference genome has been published. <br>Here we report the genome sequences of six Baikal seals, and one individual of the Caspian seal, ringed seal, and the harbor seal, re-sequenced from Illumina paired-end short read data. Heterozygosity calculations of the six newly sequenced individuals are like the previously reported genomes. In addition, the novel genome data of the other species contributed to a more complete phocid seal phylogeny based on whole-genome data. <br>Despite the long isolation of the land-locked Baikal seal population, the genetic diversity of this species is in the same range as other seal species. The Baikal seal appears to form a single, diverse population. However, targeted genome studies are needed to explore the genomic diversity throughout their distribution.

标志性的贝加尔海豹（<i>Pusa sibirica</i>）是体型最小的真海豹，作为淡水海豹特有于贝加尔湖——约一百万年前在此处形成陆封种群。尽管栖息地有限，该物种数量相当丰富，属于无危物种。在其参考基因组发表之前，关于其遗传多样性的研究仅局限于线粒体基因、限制性片段分析及微卫星标记。<br>本文报道了6只贝加尔海豹，以及各1只里海海豹、环斑海豹和港海豹的基因组序列，这些序列均通过Illumina双端短读数据重测序获得。对6只新测序个体的杂合度计算结果与先前报道的基因组数据相近。此外，其他物种的新增基因组数据有助于基于全基因组信息构建更完整的海豹科系统发育树。