Abstract
The complete mitochondrial genome of the freshwater fish species Labeo rajasthanicus was obtained, using Illumina NovaSeq 6000 with 2 × 150 bp paired-end sequencing. The mitogenome of L. rajasthanicus is 16,738 bp in length (GenBank accession no.: OQ834146), comprised of 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and a control region, i.e. D-loop. The arrangement of genes was found to be identical to other Cypriniformes fish mitogenome, available in the NCBI database. The taxonomic status of L. rajasthanicus as a valid species was debated by some researchers and it was considered a synonym of L. boggut. However, phylogenetic analysis in the present study supports the species validity of L. rajasthanicus, as it showed a distinct node well separated from L. boggut and supported by a high bootstrap value. Furtherly, the pairwise genetic divergence among studied species showed the divergence between L. rajasthanicus and L. boggut as 1.6% whereas the minimum divergence was found to be 0.13% with L. dussumieri followed by L. fimbriatus (0.58%) and L. gonius (0.63%). The complete mitogenome of L. rajasthanicus will also be useful as a baseline reference genome for the reconstruction and annotation of the mitogenome of other Labeo species.
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