Genetic differentiation of the bronze featherback Notopterus notopterus between Mekong River and Tonle Sap Lake populations by mitochondrial DNA analysis |
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| Authors: | Akira P Takagi Satoshi Ishikawa Thuok Nao Sitha Hort Masanori Nakatani Mutsumi Nishida Hisashi Kurokura |
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| Institution: | Graduate School of Agricultural and Life Science, University of Tokyo, Bunkyo, Tokyo 113-8657, Japan,;Japan Science and Technology Agency, Kawaguchi-shi, Saitama 332-0012, Japan,;Department of Fisheries Ministry of Agriculture Forestry and Fisheries, Phnom Penh 582, Cambodia, and;Ocean Research Institute, University of Tokyo, Nakano, Tokyo 164-8639, Japan |
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| Abstract: | ABSTRACT: Although the bronze featherback Notopterus notopterus is an important fish in South-East Asia, the population structure has not been investigated. In this study, genetic diversity and population structure of the bronze featherback were examined using nucleotide sequence analysis of the mitochondrial DNA control region for 332 fish collected from Tonle Sap Lake and the Mekong River in Cambodia. The average nucleotide diversity (π) of all samples was 0.033, and the Mekong River samples had higher nucleotide diversity (0.034) than Tonle Sap Lake samples (0.028). The nucleotide diversity between the lake and river samples varied from 0.029 to 0.037. The genetic differentiation between the river and lake populations was also supported by the pairwise F -statistic values and hierarchical analysis of molecular variance, indicating that the Tonle Sap Lake population is genetically isolated from the population in main stream of the Mekong River. |
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| Keywords: | Cambodia control region genetic variation Mekong River mitochondrial DNA Notopterus notopterus Tonle Sap Lake |
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