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    Not AvailableThis study examined the phylogenetic relationship and identification of five Mahseer species (Torputitora, Tor tor, Tor khudree , Tor chelynoides and Neolissochilus hexagonolopis) using partialsequencing of a Cytochrome Oxidase I (COI) DNA barcodes. The sequence analysis data showed that134 (21.61%) sites out of 628 sites were variable without insertion or deletion. Rate of transition(70.5%) were higher than transversion (29.41%). There was a high inter¬species divergence (range4.1% to 12.2%) in Mahseer species as compared to intra¬specific sequence divergence (1.7% for T.putitora, 1.2% for T. tor, 1.4% for T. khudree, 3.0% for T. chelynoides, 0.26 % for N. hexagonolopis). Thephylogenetic tree, constructed by maximum parsimony, maximum likelihood and unweighted pairgroup average methods revealed similar results suggesting that T. putitora, T. tor and T. khudreehad a close relationship to each other while maximum divergence was observed in T. chelynoides,which was also confirmed by the genetic distance data. The results indicate that COI sequencing orbar¬coding is useful in unravelling phylogenetic relationship and identification of Mahseer species.Not Availabl
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