Yao Zebin, Long Shuisheng, Wang Chun, Huang Chengqin, Zhang Hairui, Jian Liao, Huang Jingru, Guo Yusong, Dong Zhongdian, Wang Zhongduo
Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Fisheries College, Guangdong Ocean University, Zhanjiang, China.
Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Fisheries College, Guangdong Ocean University, Zhanjiang, China.
Front Genet. 2022 Oct 12;13:946006. doi: 10.3389/fgene.2022.946006. eCollection 2022.
The gene is deleted in all males of the Sanya population (SY-medaka) of the Hainan medaka, , as recently reported by us. However, due to limited knowledge regarding their population genetic background, it is difficult to explore the possible evolutionary pathway. Herein, we resequenced the whole genome of four populations, including SY-medaka. A total of 56 mitogenomes and 32,826,105 SNPs were identified. We found that the genetic differentiation is highest between SY-medaka and the other populations. The results of the population history of the suggest that the SY-medaka has been in a bottleneck period recently. Further analysis shows that SY-medaka are the most strongly affected by environmental selection. Moreover, we screened some potential genomic regions, and the genes contained in these regions may explain the potential mechanism of the selection process of the SY-medaka. In conclusion, our study can provide new clues for the adaptation process of medaka in the new environment of Sanya.
正如我们最近报道的那样，海南青鳉三亚种群（SY-青鳉）的所有雄性个体中该基因均被删除。然而，由于对其群体遗传背景的了解有限，很难探索其可能的进化途径。在此，我们对包括SY-青鳉在内的四个种群的全基因组进行了重测序。共鉴定出56个线粒体基因组和32,826,105个单核苷酸多态性（SNP）。我们发现SY-青鳉与其他种群之间的遗传分化最大。种群历史结果表明，SY-青鳉最近处于瓶颈期。进一步分析表明，SY-青鳉受环境选择的影响最大。此外，我们筛选了一些潜在的基因组区域，这些区域中包含的基因可能解释SY-青鳉选择过程的潜在机制。总之，我们的研究可为青鳉在三亚新环境中的适应过程提供新线索。
