南京师大学报（自然科学版）2025，Vol.48Issue(3)：49-55,7.DOI:10.3969/j.issn.1001-4616.2025.03.006
骆马湖翘嘴鲌种群生长特征及遗传多样性
Growth Characteristics and Genetic Diversity of Culter alburnus Population in Luoma Lake
摘要
Abstract
Culter alburnus is an important fishery resource in Luoma Lake,with significant ecological and economic values.In order to understand its growth pattern and gentic resource status,a total of 102 individuals of C.alburnus were collected from Luoma Lake and analyzed for their age structure and growth characteristics.Meanwhile,its genetic diversity was investigated using mitochondrial DNA Cytb and D-loop genes.The results showed that the age ranged from 1 to 6 years,and the 1-year individuals were dominant.The power function relationship between body weight and body length was described by equation:W=0.006 5L3.117 5(n=102,R2=0.992 4),which exhibited a uniform growth pattern.The growth equation of body length and body weight were Lt=99.69[1-e-0.212 1(t-0.196 4)]and Wt=11 058.84[1-e-0.212 1(t-0.1964)]3.1175,respectively.The growth inflection age was 5.56 year,and the body length and body weight corresponding to the inflection age were Lt=67.7 cm and Wt=3 314.4 g,respectively.3 haplotypes were detected from 40 individuals of C.alburnus based on Cytb gene,and the haplotype diversity and nucleotide diversity were 0.272±0.087 and 0.000 72±0.000 24,respectively.6 haplotypes were detected from 40 individuals of C.alburnus based on D-loop gene,and the haplotype diversity and nucleotide diversity were 0.497±0.090 and 0.001 89±0.000 56,respectively.According to the genetic diversity parameters,the population of C.alburnus showed low haplotype diversity and low nucleotide diversity pattern,which indicated the genetic diversity of C.alburnus was lower.In a word,the results demonstrated that the population composition of C.alburnus was dominated by young and small individuals,and its genetic diversity was very low.Therefore,we should strengthen the protection of C.alburnus population in Luoma Lake and take more measures to restore its wild resources and genetic diversity.关键词
翘嘴鲌/年龄结构/生长特征/遗传多样性/骆马湖Key words
Culter alburnus/age structure/growth characteristics/genetic diversity/Luoma Lake分类
水产学引用本文复制引用
李大命,杨子萍,刘燕山,唐晟凯,杨家新..骆马湖翘嘴鲌种群生长特征及遗传多样性[J].南京师大学报（自然科学版）,2025,48(3):49-55,7.基金项目
江苏省农业科技自主创新项目(CX(21)3003)、2021和2022年度省级单位项目(2021-SJ-110-03 （CX(21）
2022-SJ-061-02). （）
