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http://dx.doi.org/10.5352/JLS.2007.17.7.882

Genetic Diversity and Population Structure of Pseudobagrus fulvidraco in the Nakdong River  

Huh, Man-Kyu (Department of Molecular Biology, Dong-Eui University)
Choi, Joo-Soo (Department of Molecular Biology, Dong-Eui University)
Heo, Youn-Seong (Department of Molecular Biology, Dong-Eui University)
Lee, Bok-Kyu (Department of Molecular Biology, Dong-Eui University)
Publication Information
Journal of Life Science / v.17, no.7, 2007 , pp. 882-888 More about this Journal
Abstract
Enzyme electrophoresis was used to estimate genetic diversity and population genetic structure of Pseudobagrus fulvidraco in Korea. Nine of the 14 loci (64.3%) showed detectable polymorphism. Genetic diversity at the population and species levels were 0.286 and 0.277, respectively. Analysis of fixation indices, calculated for all polymorphic loci in each population, showed a substantial deficit of hetero-zygotes relative to Hardy-Weinberg expectations. This deficit is expected that it is due to a limited effective number of individuals per population. The average $G_{ST}$ for polymorphic loci was 0.064, indicating that most (93.6%) of the genetic diversity occurred within populations. The indirect estimate of gene flow based on mean $G_{ST}$ was 3.67. Given limited gene flow is expected to diverge genetically due to drift and reduced populations. Most populations in our study experience annual, severe demo-graphic bottlenecks due to drought and floods.
Keywords
Genetic diversity; Population structure; Pseudobagrus fulvidraco;
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