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KMID : 0613820040140060938
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Journal of Life Science
2004 Volume.14 No. 6 p.938 ~ p.950
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Population Genetic Structure of Japanese Anchovy (Engraulis japonicus) in Korean waters Based on Mitochondrial 12S Ribosomal RNA Gene Sequences
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Kim Jin-Young
Cho Eun-Seob
Kim Woo-Jin
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Abstract
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We used portions of mitochondrial 12S ribosomal RNA gene sequences (339 bp) to investigate the phylogenetic and population genetic characteristics of the Japanese anchovy, Engraulis japonicus, in Korean waters. A total of 35 mtDNA haplotypes were obtained from the samples collected in 3 locations (the southern area of the Yellow Sea, the western coast of Jejudo, and the eastern area of the South Sea) in Korean waters. One haplotype, AN8T103, obtained from the southern area of the Yellow Sea, was formed according to an independent phylogenetic individual in the PAUP analysis, which was separated from the others by a 0.2-4.1% sequence divergence. This distinct haplotype appeared to be one that was carried by immigrants from another study area, but further study is necessary. Genetic divergence, except for AN8T103, was moderate to substantial (0.2-3.8%) and nucleotide diversity within populations was 0.015 for Yellow Sea, 0.013 for Jejudo, and 0.015 for South Sea, respectively. The female gene flow was substantial or high (Nm=25.5-36.4), and the genetic distances between regions were not statistically significant (P＞0.01). These results indicated that the Japanese anchovy populations occurring in Korean waters were consisted of individuals randomly dispersed over geographic areas.
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KEYWORD
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Genetic distance, genetic diversity, Japanese anchovy, Korean waters
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