Population genetic variation of rock bream (Oplegnathus fasciatus Temminick & Schlegel, 1884) revealed by mtDNA (COI) sequence in Korea and China

Abstract

The rock bream, Oplegnathus fasciatus, is a common rocky reef game fish in East Asia and becomes recently an aquaculture species. In this study, one hundred and sixty-three specimens have been collected from 6 localities along the coastal waters of Korea and China and the genetic variation of the species has been analyzed with mitochondrial DNA COI sequences. A total of 34 polymorphic sites are detected and 30 haplotypes are determined. The genetic diversity of O. fasciatus shows a pattern of low level of nucleotide diversity (0.04±0.003) and high level of haplotype diversity (0.83±0.02). Individuals from Zhoushan (ZS) in East China Sea present the highest genetic diversity in terms of nucleotide diversity (0.009±0.005), haplotype diversity (0.81±0.06), and average pairwise nucleotide differences (5.65±2.79) out of the six sample groups.aters of Korea and China and the genetic variation of the species has been analyzed with mitochondrial DNA COI sequences. A total of 34 polymorphic sites are detected and 30 haplotypes are determined. The genetic diversity of O. fasciatus shows a pattern of low level of nucleotide diversity (0.04±0.003) and high level of haplotype diversity (0.83±0.02). Individuals from Zhoushan (ZS) in East China Sea present the highest genetic diversity in terms of nucleotide diversity (0.009±0.005), haplotype diversity (0.81±0.06), and average pairwise nucleotide differences (5.65±2.79) out of the six sample groups.