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Biochemical polymorphism in yellow catfish, Mystus nemurus (C&V), from Thailand


Leesanga, Sanga and Siraj, Siti Shapor and Daud, Siti Khalijah and Sodsuk, Panom K. and Tan, Soon Guan and Sodsuk, Srirat (2000) Biochemical polymorphism in yellow catfish, Mystus nemurus (C&V), from Thailand. Biochemical Genetics, 38 (3-4). pp. 77-85. ISSN 0006-2928; ESSN: 1573-4927


Yellow catfish, Mystus nemurus (Cuv. & Val.), is becoming one of the major freshwater species farmed by aquaculturists in Southeast Asia. It was of interest to examine levels of genetic subpopulation differentiation among samples of this species obtained from parts of its range, as well as to compare the genetics of wild and hatchery-bred fish. Horizontal starch gel electrophoresis and histochemical staining techniques were used to examine genetic variation within and among eight wild and one hatchery populations of M. nemurus from northern, northeastern, central and southern Thailand. Four tissues (heart, liver, kidney, and muscle) from individual specimens were used to analyze variations at 23 protein-coding loci. Fifteen of the 23 loci examined (65.22%), namely, ACP*, AAT-1*, EST-1*, EST-2*, GPI*, IDH-1*, IDH-2*, MDH-1*, MDH-2*, MDH-3*, ME*, PGM*, 6PGD*, SOD*, and HB*,were polymorphic at the 0.95 level. Observed heterozygosities ranged from 0.041 to 0.111, with an average of 0.068 ± 0.028. Genetic distances ranged from 0.005 to 0.164. The greatest genetic distance was found between the Chainat and the Suratthani populations (0.164), a level indicative of subspecific differentiation in M. nemurus from within Thailand.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
DOI Number: https://doi.org/10.1023/A:1002763729872
Publisher: Plenum Publishing Corporation
Keywords: Mystus nemurus; Yellow catfish; Genetic variation; Electrophoresis; Allozymes
Depositing User: Nabilah Mustapa
Date Deposited: 09 May 2019 01:26
Last Modified: 09 May 2019 01:26
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1023/A:1002763729872
URI: http://psasir.upm.edu.my/id/eprint/15195
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