水产科技情报2026，Vol.53Issue(2)：69-75,7.DOI:10.16446/j.fsti.20240500209
基于线粒体细胞色素b基因的小黄鱼6个野生群体遗传特征研究
Genetic characteristics of six wild populations of small yellow croaker(Larimichthys polyactis)based on mitochondrial Cytb gene
摘要
Abstract
Small yellow croaker(Larimichthys polyactis)has significant economic value in China,but its popula-tions are grappling with diminishing germplasm resources.To address this issue,a study delved into the genetic structure of six small yellow croaker populations along the east coast of China,utilizing the mitochondrial cyto-chrome b(Cytb)gene.The results revealed a total of 138 variable sites across the six populations,accounting for 19.86%of all sites.Among these,102 were parsimony-informative sites and 36 were singleton sites.Additional-ly,96 haplotypes were identified,comprising 15 shared haplotypes and 81 private haplotypes.Haplotype diversity ranged from 0.925 to 0.972,and nucleotide diversity ranged from 0.003 48 to 0.035 31.AMOVA results indica-ted higher genetic variation within populations(91.89%)compared to inter-population variation(8.11%).Neu-tral tests suggested population stability,except for the Xiapu population,which may have experienced a minor population expansion.While small yellow croaker populations exhibited high haplotype diversity,nucleotide diver-sity was comparatively low.Overall,population differentiation was minimal and stable,with the Xiapu population demonstrating greater genetic distance and higher genetic differentiation compared to the other five populations.关键词
小黄鱼/细胞色素b基因/野生群体/遗传多样性Key words
Larimichthys polyactis/cytochrome b gene/wild population/genetic diversity引用本文复制引用
杜书然,祝斐,徐大凤,陈淑吟,贾超峰,孟乾,孙瑞健,高波,李忠琦..基于线粒体细胞色素b基因的小黄鱼6个野生群体遗传特征研究[J].水产科技情报,2026,53(2):69-75,7.基金项目
长江口小黄鱼种质资源挖掘与规模化繁育技术研究(MS12022029). （MS12022029）
