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KMID : 0381120080300050451
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Genes and Genomics
2008 Volume.30 No. 5 p.451 ~ p.459
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Genetic Diversity of Rock Bream Oplegnathus fasciatus in Southern Korea
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An Hye-Suck
Kim Mi-Jung
Hong Seong-Wan
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Abstract
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Data on population genetic structure are of growing interest in the context of stock enhancement programs, which involve the release of animals, and conservation biology. In this study, we examined the genetic characteristics of three rock bream populations in southern Korea using microsatellite markers to understand their genetic diversity. A total of 181 rock breams from the three populations (Tongyeong, Wando and Jeju) were typed for six polymorphic microsatellite loci. A total of 80 different alleles were found over all loci, with some alleles being unique. The average number of allele per locus ranged from 7.7 to 16.7. The average observed and expected heterozygosities ranged from 0.503 to 0.934 and from 0.588 to 0.917, respectively. A deficit of heterozygotes relative to Hardy?Weinberg expectations was found for two loci and in one site, indicating genetic instability within this region. However, FST and RST values showed no significant genetic differentiation among the three populations. These results suggest the possibility of a genetically identical population in southern Korea. This study provides the first comprehensive information about the genetic characteristics of Korean rock bream populations, which could be of use in fisheries management and the aquaculture industry, especially with regard to stock enhancement programs.
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KEYWORD
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rock bream, Oplegnathus fasciatus, microsatellite, genetic diversity
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