海洋科学2016，Vol.40Issue(7)：41-45,5.DOI:10.11759//hykx20141118001
基于线粒体控制区部分序列的南海大斑石鲈遗传多样性分析
Genetic diversity of Pomadasys maculatus in coastal waters of South China Sea via mtDNA control region partial sequences
摘要
Abstract
This study determined 993bp mtDNA control region sequences of 61 individuals collected in Dongxing, Wushi, Tanmen, and Zhapo where 35 variable sites defined 47 haplotypes. Global haplotype (Hd) and nucleotide diversity (Pi) were 0.9884 and 0.0076, respectively thus indicating a pattern of high haplotype diversity and low nucleotide diversity. A combination of the significant negative neutral test values of Fu’s Fs (−5.34,P= 0.03), the mismatch distribution pattern, and the network analysis revealed that a historical population expansion occurred at about 47400–11800 years ago. The genetic distance between populations (0.0065–0.0089) was at a similar level to the genetic distance within populations (0.0066–0.0089); the overall genetic differentiation index (Fst) was−0.0057 (P> 0.05), the gene flow coefficient (Nm) among four populations was 33.76, and the analysis of molecular vari-ance showed that most of the genetic variations of the four populations was distributed throughout the populations. In addition, genetic diversity was low and genetic divergence was inconspicuous between populations ofPomadasys maculatus. It is thus suggested thatP. maculatus in the coastal waters of the South Sea should be maintained as a single management unit and that the Tanmen population within contains arelatively high genetic diversity and should thus be a priority for protection.关键词
大斑石鲈(Pomadasys maculatus)/控制区/遗传多样性Key words
Pomadasys maculatus/control region/genetic diversity分类
生物科学引用本文复制引用
郜星晨,章群,薛丹,宫亚运,曹艳,韩博平..基于线粒体控制区部分序列的南海大斑石鲈遗传多样性分析[J].海洋科学,2016,40(7):41-45,5.基金项目
国家自然科学基金项目(41071034) （41071034）
中央高校基本科研业务费专项资金(21613105,21611426)@@@@National Natural Science Foundation of China, No.41071034 （21613105,21611426）
Fundamental Scientific Research Funds for the Central Universities No.21613105,21611426 （）
