A comparative analysis of genetic diversity between released and recaptured populations of Larimichthys crocea in Jiangsu coastal waters
ZHANG Hu
ZHAO Xiang
ZU Kaiwei
ZHU Chaowen
BEN Chengkai
YUAN Jianmei
HU Haisheng
XIAO Yueyue
YANG Yanyan
SONG Na
Abstract：The large yellow croaker(Larimichthys crocea)is an important economic fish species in the coastal waters of China.In recent years,the stock of L.crocea has declined sharply due to overfishing,environmental pollution,habitat destruction among others.In order to study the genetic difference be-tween release populations and recapture populations of L.crocea off the coast of Jiangsu Province,198 samples were collected.Sequence analysis of mitochondrial DNA control region revealed that the haplo-type diversity and nucleotide diversity of cultured population were 0.873 5±0.030 8 and 0.0144±0.0073,respectively,which were significantly lower than the haplotype diversity(0.998 4±0.001 4)and nucleotide diversity(0.022 4±0.011 1)of the wild population.The genetic difference between the two recapture populations of L.crocea was small(FST=0.031),and the genetic difference between culture population and recapture population is large(FSTvaried between 0.094 and 0.099),which may be caused by the small number of parent fish and inbreeding.Our findings was of great significance for assessing the genetic impact of L.crocea stock enhancement,and provided theoretical basis and techni-cal reference for the subsequent releasing work of L.crocea.
Keywords：Larimichthys croceacultured populationrecapture populationmitochondrial DNAge-netic diversity
Publication Date：2025-04-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 50-58 )