Fishery College, Zhejiang Ocean University, Zhoushan 316022, China.
MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
Genes (Basel). 2024 Apr 24;15(5):534. doi: 10.3390/genes15050534.
is one of the most commercially important marine fish in the northwestern Pacific. However, little information about the genome-wide genetic characteristics is available for individuals from the Bohai and Yellow Seas. In this study, a total of 157,778, 174,480, and 188,756 single-nucleotide polymorphisms from Dalian (DL), Yantai (YT), and Qingdao (QD) coastal waters of China were, respectively, identified. Sixty samples (twenty samples per population) were clustered together, indicating shallow structures and close relationships with each other. The observed heterozygosity, expected heterozygosity, polymorphism information content, and nucleotide diversity ranged from 0.14316 to 0.17684, from 0.14035 to 0.17145, from 0.20672 to 0.24678, and from 7.63 × 10 to 8.77 × 10, respectively, indicating the slight difference in genetic diversity among populations, and their general genetic diversity was lower compared to other marine fishes. The population divergence showed relatively low levels (from 0.01356 to 0.01678) between populations. Dispersing along drifting seaweeds, as well as the ocean current that flows along the western and northern coasts of the Yellow Sea and southward along the eastern coast of China might be the major reasons for the weak genetic differentiation. These results form the basis of the population genetic characteristics of based on GBS (Genotyping by Sequencing). In addition to basic population genetic information, our results provid a theoretical basis for further studies aimed at protecting and utilizing resources.
是西北太平洋地区最具商业价值的海洋鱼类之一。然而，关于渤海和黄海地区个体的全基因组遗传特征的信息却很少。在本研究中，分别从中国大连（DL）、烟台（YT）和青岛（QD）沿海水域鉴定出了 157778、174480 和 188756 个单核苷酸多态性。60 个样本（每个群体 20 个样本）聚类在一起，表明其结构较浅，彼此之间关系密切。观察杂合度、期望杂合度、多态信息含量和核苷酸多样性分别在 0.14316 至 0.17684、0.14035 至 0.17145、0.20672 至 0.24678 和 7.63×10 至 8.77×10 之间，表明群体间遗传多样性略有差异，且其总体遗传多样性较其他海洋鱼类低。群体分化显示出相对较低的水平（0.01356 至 0.01678）。沿漂流海藻和沿黄海西部和北部海岸流动并向南沿中国东部海岸流动的海流可能是遗传分化较弱的主要原因。这些结果构成了基于 GBS（测序基因分型）的 群体遗传特征的基础。除了基本的群体遗传信息外，我们的研究结果还为进一步研究保护和利用 资源提供了理论依据。
