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Population structuring of Channa striata from Indian waters using control region of mtDNA.
Mitochondrial DNA Part A ( IF 1.073 ) Pub Date : 2019-03-25 , DOI: 10.1080/24701394.2018.1532416
Vishwamitra Singh Baisvar,Mahender Singh,Ravindra Kumar

Striped snakehead (Channa striata) is a freshwater species of early Miocene period belonging to family Channidae. The genetic variability of the snakehead populations in India was not well known. Present study was undertaken using 149 sequences of control region of mitochondrial DNA from seven geographically distinct populations of Indian water, which resulted in 46 haplotypes with 137 variable nucleotide sites (60 singletons and 77 parsimony informative) and the nucleotide frequencies was: A = 33.0, T = 28.1, G = 15.4, and C = 23.5%. The presence of low-frequency of younger haplotypes with a large number of singletons indicates the absence of dominant haplotype. Hierarchical AMOVA showed highly significant genetic differentiation (FST = 0.56, p < .00) among the populations. The pattern of genetic differentiation was not consistent with geographical distributions. AMOVA identified three genetically heterogeneous clades. The significant finding of Imphal and Chaliyar was that they were found genetically close to each other, but geographically much isolated from each other. The inference of the study suggests that the hypothesis of the single panmictic population of C. striata in Indian waters is rejected.
更新日期:2019-11-01

 

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