Shallow Population Genetic Structures of Thread-sail Filefish (Stephanolepis cirrhifer) Populations from Korean Coastal Waters.

M Yoon,W Park,D S Kim,Y K Nam

doi:10.5713/ajas.2011.11122

M Yoon, W Park + Show 2 more

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https://doi.org/10.5713/ajas.2011.11122

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Abstract

Genetic diversities, population genetic structures and demographic histories of the thread-sail filefish Stephanolepis cirrhifer were investigated by nucleotide sequencing of 336 base pairs of the mitochondrial DNA (mtDNA) control region in 111 individuals collected from six populations in Korean coastal waters. A total of 70 haplotypes were defined by 58 variable nucleotide sites. The neighbor-joining tree of the 70 haplotypes was shallow and did not provide evidence of geographical associations. Expansion of S. cirrhifer populations began approximate 51,000 to 102,000 years before present, correlating with the period of sea level rise since the late Pleistocene glacial maximum. High levels of haplotype diversities (0.974±0.029 to 1.000±0.076) and nucleotide diversities (0.014 to 0.019), and low levels of genetic differentiation among populations inferred from pairwise population FST values (−0.007 to 0.107), support an expansion of the S. cirrhifer population. Hierarchical analysis of molecular variance (AMOVA) revealed weak but significant genetic structures among three groups (FCT = 0.028, p<0.05), and no genetic variation within groups (0.53%; FSC = 0.005, p = 0.23). These results may help establish appropriate fishery management strategies for stocks of S. cirrhifer and related species.

Highlights

Filefish include 95 species widely distributed in both temperate and tropical seas (Nelson, 1994)
The species is widely distributed in the western Pacific Ocean, occurring in the East Sea, the Yellow Sea, and the East China Sea (Masuda et al, 1984; Shao et al, 1990; Nelson, 1994; Ni and Kwok, 1999; Kim et al, 2005) most commercial catches are from the southern coastal area of the Korean Peninsula and the Kuroshio Current of the tropical Pacific Ocean
We examine the genetic diversity and population structure of S. cirrhifer along the Korean coast using sequence analysis of the 5′ end of the mitochondrial DNA (mtDNA) control region to obtain basic data for fisheries resources management

Summary

Introduction

Filefish (family Monacanthidae) include 95 species widely distributed in both temperate and tropical seas (Nelson, 1994). The mtDNA control region has been generally used to study genetic diversities, population structures, and intraspecific phylogenesis of fish (Brown et al, 1993; Stepien and Faber, 1998; Sato et al, 2001; Guarnieo et al, 2002).

Results

Conclusion