Population genetic analysis of striped dwarf catfish golsha Mystus cavasius (Hamilton 1822) using allozyme markers in Bangladesh

Md. Mukhlesur Rahman Khan, . and Nasrin Sultana, . and Md. Nure Rasul, . Population genetic analysis of striped dwarf catfish golsha Mystus cavasius (Hamilton 1822) using allozyme markers in Bangladesh. pp. 52-59. ISSN 0116-6514

Population genetic variation in four populations of golsha Mystus cavasius (Hamilton 1822) from Bangladesh namely the Bulla River the Dhonu River the Mithamoin haor (dead basin of oxbow lakes) and the Bonhi baor (closed waterlogged areas) were analysed using allozyme markers. Seven loci encoded in muscle and liver tissues by four enzymes were examined using starch gel electrophoresis. Five loci were polymorphic (P99). The mean proportion of polymorphic loci was highest (71.43) in the Mithamoin haor population whereas the highest mean number of alleles per locus (2.143) was observed in both the Mithamoin and Bonhi baor populations. The observed and the expected heterozygosity (0.176 and 0.193 respectively) were highest in the Bonhi baor population. None of the pairwise FST values was statistically significant. The highest (0.109-0.125) FST and genetic distance (D) values were found between the Bonhi baor and all other populations reflecting the more distant location in a separate catchment of the Bonhi population. The genetic distance also showed the Bonhi as an outlier separated from other three populations. Although the Dhonu and to a lesser degree the Bonhi populations showed some evidence of deviation from Hardy-Weinberg equilibrium all populations had sufficient variation for use in selective breeding programmes and for the commercial propagation of golsha as future broodstocks.

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Abstract

Population genetic variation in four populations of golsha Mystus cavasius (Hamilton 1822) from Bangladesh namely the Bulla River the Dhonu River the Mithamoin haor (dead basin of oxbow lakes) and the Bonhi baor (closed waterlogged areas) were analysed using allozyme markers. Seven loci encoded in muscle and liver tissues by four enzymes were examined using starch gel electrophoresis. Five loci were polymorphic (P99). The mean proportion of polymorphic loci was highest (71.43) in the Mithamoin haor population whereas the highest mean number of alleles per locus (2.143) was observed in both the Mithamoin and Bonhi baor populations. The observed and the expected heterozygosity (0.176 and 0.193 respectively) were highest in the Bonhi baor population. None of the pairwise FST values was statistically significant. The highest (0.109-0.125) FST and genetic distance (D) values were found between the Bonhi baor and all other populations reflecting the more distant location in a separate catchment of the Bonhi population. The genetic distance also showed the Bonhi as an outlier separated from other three populations. Although the Dhonu and to a lesser degree the Bonhi populations showed some evidence of deviation from Hardy-Weinberg equilibrium all populations had sufficient variation for use in selective breeding programmes and for the commercial propagation of golsha as future broodstocks.

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Item Type:	Article
AGROVOC Term:	Mystus cavasius
AGROVOC Term:	Allozymes
AGROVOC Term:	Dwarfs
AGROVOC Term:	Genetic variation
AGROVOC Term:	Electrophoresis
AGROVOC Term:	Random amplified polymorphic DNA
AGROVOC Term:	Genetic distance
AGROVOC Term:	Selective breeding
AGROVOC Term:	Bagridae
AGROVOC Term:	Siluriformes
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23688

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