• SNEHA VARGHESE

      Articles written in Journal of Genetics

    • Whole mitogenome analysis and phylogeny of freshwater fish red-finned catopra (Pristolepis rubripinnis) endemic to Kerala, India

      S. CHANDHINI YUSUKE YAMANOUE SNEHA VARGHESE P. H. ANVAR ALI V. M. ARJUNAN V. J. REJISH KUMAR

      More Details Abstract Fulltext PDF

      The freshwater leaf fish Pristolepis rubripinnis belongs to the family Pristolepididae, restricted to Pamba and Chalakudy rivers of Kerala, India. In the present study, we sequenced the complete mitogenome of P. rubripinnis and analysed its phylogeny in the order Anabantiformes. The 16622-bp long genome comprised of 13 protein-coding genes, two rRNA genes, 22 transfer RNAs (tRNAs) genes and had a noncoding control region. All the protein-coding genes, tRNA and rRNA were located on the heavy strand, except nad6 and eighttRNAs (glutamine, alanine, asparagine, cysteine, tyrosine, serine, glutamic acid and proline) transcribed from L strand. The genome exhibited an overlapping between atp8 and atp6 (2 bp), nad4 and nad4l (2 bp), tRNAIle and tRNAGln (1 bp), tRNAThr and tRNAPro (1 bp).Around 157 bp, an intergenic spacer was identified. The overall GC-skews and AT-skews of the H-strand mitogenome were –0.35 and 0.079, respectively, revealing that the H-strand consisted of equal amounts of A and T and that the overall nucleotide composition was Cskewed. All tRNA genes exhibited cloverleaf secondary structures, while the secondary structure of tRNASer lacked a discernible dihydrouridine stem. The phylogenetic analysis of available mitogenomes of Anabantiformes revealed a sister group relationship between Pristolepididae and Channidae. The whole mitogenome of Pristolepis rubripinnis will form a molecular resource for further taxonomic and conservation studies on this endemic freshwater fish.

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