DNA barcoding of some commonly exploited fishes from the northern Western Ghats, India
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Keywords:
DNA barcoding, Freshwater fish, COI, Molecular phylogeny, Western GhatsAbstract
The Western Ghats, being very rich in freshwater fish diversity, has recently been confirmed as a globallysignificant centre of diversity and endemism for freshwater species and comprise one of the 34 global biodiversity
hotspots. Owing to its extreme ichthyofaunal diversity, the present study was designed to generate cytochrome
oxidase I (COI) DNA barcodes for the identification of some commonly exploited fishes from the west-flowing
rivers of northern Western Ghats. Twenty-three fish specimens representing 6 families and 10 species were barcoded
from the major west-flowing rivers of the northern Western Ghats. The obtained barcodes discriminated all the
species with sufficient barcode gap. The average Kimura two parameter (K2P) values for within species, the genus
and family distances were 0.37, 17.74 and 18.51% respectively. The neighbour-joining tree revealed distinct clusters
corresponding to the taxonomic status of the species. Generated barcodes are expected to provide the much-needed
baseline reference for the ichthyofaunal biodiversity of the global biodiversity hotspot.
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