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牙鲆（Paralichthys olivaceus）的遗传多样性以及选择性育种对韩国牙鲆种群的影响。

Genetic diversity of Olive flounder (Paralichthys olivaceus) and the impact of selective breeding on Korean populations.

作者信息

Hong Euiseo, Kim Hyun-Chul, Lee Jeong-Ho, Jeong Woonyoung, Dinh Phuong Thanh N, Ekanayake Waruni, Park Jong-Won, Jeong Minhwan, Lee Dain, Kim Julan, Kim Yoonsik, Lee Seung Hwan, Chung Yoonji

机构信息

Department of Bio-Big Data and Precision Agriculture, Chungnam National University, Daejeon, Republic of Korea.

Genetics and Breeding Research Center, National Institute of Fisheries Science, Geoje, Republic of Korea.

出版信息

PLoS One. 2025 Apr 16;20(4):e0318672. doi: 10.1371/journal.pone.0318672. eCollection 2025.

DOI:10.1371/journal.pone.0318672
PMID:40238790
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12002499/
Abstract

This study aimed to identify the population structure and genetic diversity of olive flounder (Paralichthys olivaceus) in Korea and to examine the potential for genetic improvement in aquaculture populations. PCA showed NIFS and FarmA as closely related clusters, while FarmB exhibited moderate differentiation with greater variability. Fst analysis indicated high similarity between NIFS and farmed populations (0.021-0.043) but significant differentiation from wild populations (0.274-0.295). Admixture analysis highlighted a shared ancestral component (over 70%) among NIFS and farmed populations, contrasting with the unique genetic makeup of wild populations. The phylogenetic tree confirmed these patterns, with NIFS and FarmA forming close branches, FarmB showing intermediate placement, and wild populations clustering separately. Additionally, genomic estimated breeding values for body weight showed no significant differences between FarmA and FarmB, while prediction accuracy was higher for FarmA (47%) compared to FarmB (45%), indicating a closer genetic relationship between NIFS and FarmA. These findings emphasize the critical role of selective breeding and gene flow in shaping the genetic structure of farmed populations, offering valuable insights for improving growth traits and maintaining genetic diversity in aquaculture.

摘要

本研究旨在确定韩国牙鲆（Paralichthys olivaceus）的种群结构和遗传多样性，并研究水产养殖群体的遗传改良潜力。主成分分析显示，NIFS和FarmA为密切相关的聚类，而FarmB表现出中等程度的分化且变异性更大。Fst分析表明，NIFS与养殖群体之间具有高度相似性（0.021 - 0.043），但与野生群体存在显著分化（0.274 - 0.295）。混合分析突出了NIFS与养殖群体之间共享的祖先成分（超过70%），这与野生群体独特的遗传组成形成对比。系统发育树证实了这些模式，NIFS和FarmA形成紧密分支，FarmB处于中间位置，野生群体单独聚类。此外，体重的基因组估计育种值在FarmA和FarmB之间没有显著差异，而FarmA的预测准确性更高（47%），相比之下FarmB为45%，这表明NIFS与FarmA之间的遗传关系更密切。这些发现强调了选择性育种和基因流在塑造养殖群体遗传结构中的关键作用，为改善生长性状和维持水产养殖中的遗传多样性提供了有价值的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/525da948b3a0/pone.0318672.g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/fe12c4fcebd4/pone.0318672.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/032f02a762af/pone.0318672.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/6f1fbfb1be27/pone.0318672.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/d3e6fd43e659/pone.0318672.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/f5250e51f559/pone.0318672.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/0fc570b293c5/pone.0318672.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/525da948b3a0/pone.0318672.g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/fe12c4fcebd4/pone.0318672.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/032f02a762af/pone.0318672.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/6f1fbfb1be27/pone.0318672.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/d3e6fd43e659/pone.0318672.g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/0fc570b293c5/pone.0318672.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdfd/12002499/525da948b3a0/pone.0318672.g007.jpg

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