Kim Jung Eun, Goo In Bon, Hwang Ju-Ae, Kim Hyeong Su, Choi Hye-Sung, Lee Jeong-Ho
Inland Aquaculture Research Center, National Institute of Fisheries Science (NIFS), Changwon, 51688, South Korea.
Southwest Sea Fisheries Research Institute, National Institute of Fisheries Science (NIFS), Yeosu, 59780, South Korea.
Genes Genomics. 2018 Jun;40(6):635-642. doi: 10.1007/s13258-018-0663-7. Epub 2018 Feb 8.
In aquaculture, cultured fish often undergo continuous cross-fertilization without any inflow of new broodstock. This lowers genetic diversity, leading to increased disease rates and decreased survival rates. To improve the mass production and easy culture of Israeli carp, it is essential to investigate the population structure and genetic diversity of these fish. However, such a survey has not yet been performed on Korean Israeli carp. In this study, we used seven microsatellite markers to analyze the genetic diversity and association of cultured Israeli carp from Korea and China. The average numbers of alleles per locus (N ) for two Korean (KorA and KorB) and two Chinese (ChA and ChB) populations were as follows: KorA (10.42), KorB (14.43), ChA (20.57) and ChB (20.71). The expected heterozygosity (H ) ranged from 0.672 to 0.897 and from 0.827 to 0.938 in the Korean sample and Chinese sample respectively. The genetic diversity of the Korean Israeli carp was about half that of the Chinese carp. The diversity of the Korean Israeli carp was very low, suggesting that the immunity of this population could be weak, and that diversity-recovery studies are urgently needed. Therefore, our results may therefore form the foundation for future research efforts towards genetic monitoring and selective breeding, continuous research needs to be conducted in order to recover the genetic diversity of the Korean Israeli carp.
在水产养殖中，养殖鱼类常常在没有新亲鱼流入的情况下持续进行杂交受精。这降低了遗传多样性，导致疾病发生率上升和存活率下降。为了提高以色列鲤鱼的大规模生产和易于养殖的特性，研究这些鱼类的种群结构和遗传多样性至关重要。然而，尚未对韩国的以色列鲤鱼进行过此类调查。在本研究中，我们使用七个微卫星标记来分析韩国和中国养殖的以色列鲤鱼的遗传多样性及关联性。两个韩国种群（KorA和KorB）和两个中国种群（ChA和ChB）每个位点的平均等位基因数（N ）如下：KorA（10.42）、KorB（14.43）、ChA（20.57）和ChB（20.71）。韩国样本和中国样本的预期杂合度（H ）分别在0.672至0.897和0.827至0.938之间。韩国以色列鲤鱼的遗传多样性约为中国鲤鱼的一半。韩国以色列鲤鱼的多样性非常低，这表明该种群的免疫力可能较弱，迫切需要开展恢复多样性的研究。因此，我们的研究结果可能为未来遗传监测和选择性育种的研究工作奠定基础，需要持续开展研究以恢复韩国以色列鲤鱼的遗传多样性。
