Kim Kang-Rae, Park Jong-Won, Park Kyung-Il, Lee Hee-Jung
Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science, Namhae 52440, Republic of Korea.
Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science, Tongyeong 53085, Republic of Korea.
Int J Mol Sci. 2025 Apr 28;26(9):4172. doi: 10.3390/ijms26094172.
The Pacific oyster, , is an important commercially farmed species in Korea. exhibits low genetic diversity in wild populations in Korea. To address this, we bred Japanese broodstock for more than five generations and released them into two populations to increase genetic diversity. We also assessed whether this improvement was achieved by comparing them with a control population. In this study, we analyzed genetic diversity using 16 microsatellite loci of . The observed heterozygosity in the farmed population ranged up to 0.494, while in the wild population, it was 0.437. The farmed population had the highest genetic diversity, but the effective population size was low (105). The PD population size for resource creation was 403, which was higher than that of GH. The genetic structure was divided into two groups with = 2. The first group consisted of the BR population, while the second group included the GH, GW, and PD populations. Therefore, we confirmed significant genetic differences between the farmed, wild, and resource creation populations. This study provides essential genetic information for future fishery resource development and conservation of .
太平洋牡蛎（Crassostrea gigas）是韩国重要的商业养殖物种。韩国野生种群的太平洋牡蛎遗传多样性较低。为解决这一问题，我们培育了五代以上的日本亲鱼，并将它们放归到两个种群中以增加遗传多样性。我们还通过将它们与对照种群进行比较来评估这种改进是否实现。在本研究中，我们使用太平洋牡蛎的16个微卫星位点分析了遗传多样性。养殖种群中观察到的杂合度最高可达0.494，而野生种群中为0.437。养殖种群具有最高的遗传多样性，但有效种群大小较低（105）。用于资源创建的PD种群大小为403，高于GH种群。遗传结构分为两组，K = 2。第一组由BR种群组成，而第二组包括GH、GW和PD种群。因此，我们证实了养殖、野生和资源创建种群之间存在显著的遗传差异。本研究为未来太平洋牡蛎渔业资源的开发和保护提供了重要的遗传信息。
