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http://dx.doi.org/10.5352/JLS.2006.16.2.213

Genetic Diversity and Population Structure of Codium fragile (SURINGAR) HARlOT in Korea Using Allozymes  

Lee Bok-Kyu (Department of Molecular Biology, Dongeui University)
Park So-Hye (Department of Molecular Biology, Dongeui University)
Heo Youn-Seong (Department of Molecular Biology, Dongeui University)
Ju Mu-Teol (Department of Molecular Biology, Dongeui University)
Choi Joo-Soo (Department of Molecular Biology, Dongeui University)
Huh Man-Kyu (Department of Molecular Biology, Dongeui University)
Publication Information
Journal of Life Science / v.16, no.2, 2006 , pp. 213-218 More about this Journal
Abstract
The study of genetic diversity and population structure was carried out in the Codium fragile using allozyme analysis. Although this species has been regarded as a ecologically and economically important source, there is no report on population structure in Korea. Starch gel electrophoresis was used to investigate the allozyme variation and genetic structure of four Korean populations of this species. Of the 15 genetic loci surveyed, nine (60.0%) was polymorphic in at least one population. Genetic diversity was high at the species level ($H_{ES}$=0.144), and, that of the population level was relatively low ($H_{EP}$=0.128). Nearly 87% of the total genetic diversity in C. fragile was apportioned within populations. The predominant asexual reproduction, population fragmentation, low fecundity, geographic isolation and colonization process are proposed as possible factors contributing to low genetic diversity in this species. The indirect estimated of gene flow based on $G_{ST}$ was 1.69. The moderate level of gene flow in C. fragile populations is mainly caused by thallus developed from isolated utricles dispersal via sea current.
Keywords
Allozyme; Codium fragile; genetic diversity;
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