Low mtDNA variation and shallow population structure of the Chinese pomfret Pampus chinensis along the China coast

• Published in: Journal of fish biology Vol. 92; no. 1; pp. 214 - 228
• Main Authors: Sun, P., Tang, B. J.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.01.2018; Wiley Subscription Services, Inc
• Subjects: Coastal environments; Cytochrome; Cytochrome b; Cytochromes; Deoxyribonucleic acid; Dispersal; Divergence; DNA; Gene sequencing; genetic differentiation; Genetic diversity; Genetic structure; Genetic variation; Haplotypes; Mitochondrial DNA; mtDNA; Nucleotide sequence; Nucleotides; Ocean currents; Pampus chinensis; Pleistocene; Population; Population genetics; Population growth; Population structure; Population studies; Populations; Segregation; Statistical methods; Pampus chinensis; genetic diversity; genetic differentiation; mtDNA; cytochrome b
• ISSN: 0022-1112; 1095-8649
• DOI: 10.1111/jfb.13515

In the present study, population genetic structure and genetic diversity of the Chinese pomfret Pampus chinensis, along the China coast were investigated and compared with that from Indonesia using mitochondrial DNA cytochrome b gene sequences. A total of 28 variable sites (including 18 singleton sites and 10 parsimony information sites) were observed and 23 haplotypes were defined in 330 individuals from 11 localities. The haplotype diversity (HD) of the populations ranged from 0·540 to 0·828, the nucleotide diversity (π) ranged from 0·081 to 0·295%. Pairwise FST statistics showed that significant genetic divergence occurred among populations from different geographical regions. The high dispersal capabilities, geographic segregation and ocean currents may be responsible for the present population genetic structure in this species. In addition, a population expansion event during the late Pleistocene period was inferred. The time of population expansion was estimated to occur about 117 000–169 000 years ago.