中国水产科学2026，Vol.33Issue(6)：17-27,11.DOI:10.12264/JFSC2026-0082
浙江大黄鱼野生群体与养殖群体形态特征比较
Comparison of morphological characteristics between wild and farmed populations of Larimichthys crocea
摘要
Abstract
To explore the morphological divergence between wild and cultured populations of Larimichthys crocea,we integrated traditional morphometrics with the truss network method in this study.A total of 178 wild individuals and 154 cultured individuals were sampled from the offshore waters of Zhejiang Province,and 31 morphological characteristics were measured.We then performed independent-sample t-tests,principal component analysis(PCA),and stepwise discriminant analysis(SDA)to quantify inter-population morphological differences.The results indicated that four truss measurements(D1-3,D6-8,D8-9,and D8-11)differed significantly between the two populations(P<0.05),while 20 traits including condition factor,the ratios of eye diameter to head length,head length to body length,body depth to body length,and caudal peduncle depth to length exhibited highly significant differences(P<0.01).PCA extracted eight principal components,which collectively explained 78.6%of the total morphological variance,and the first two principal components(PC1 and PC2)successfully separated the two populations.SDA screened nine key discriminant traits,achieving 100%classification accuracy in both the original classification and cross-validation.In general,wild L.crocea has a slimmer and more elongated body shape,whereas cultured individuals are shorter and more robust.These morphological differences are primarily driven by long-term adaptive evolution to contrasting living environments.Our findings provide important reference for stock identification,germplasm assessment,selective breeding,and sustainable resource management of L.crocea.关键词
大黄鱼/野生群体/养殖群体/形态/框架测量法Key words
Larimichthys crocea/wild population/farmed population/morphological/truss network分类
农业科技引用本文复制引用
蒋日进,兰丹,肖泽宇,张亚洲,李鹏飞,李伟业,许永久..浙江大黄鱼野生群体与养殖群体形态特征比较[J].中国水产科学,2026,33(6):17-27,11.基金项目
国家重点研发计划项目(2023YFD2401901) （2023YFD2401901）
浙江省海洋渔业资源调查专项(HYS-CZ-202502,HYS-CZ-202505). （HYS-CZ-202502,HYS-CZ-202505）
