The mitochondrial genome of Tremoctopus violaceus (Octopoda, Tremoctopodidae) and its phylogenetic consideration

The complete mitochondrial genome of Tremoctopus violaceus was sequenced to analyze its organization and phylogenetic status within the order Octopoda. T. had a structure similar that other content nucleotides A, C, G, T 31.68 %, 7.71 20.02 40.58 respectively. All protein-coding genes (PCG) began with ATG codon, excluding ND4 ATP6, which ATC ATT, respectively, terminated TAG, TAA, TA, or Codons for isoleucine were most used codons, whereas those arginine least. Two extra tRNAs, trnN trnL, found in control region. These tRNAs have D-armless structure. region excess A + (83.16 %) stem-loop two elements, is reported first time Octopoda by our study. Bayesian inference using 13 PCG revealed Octopus Octopodidae polyphyletic, Tremoctopodidae diverged relatively earlier characteristics may help understand evolutionary history establish marine biodiversity conservation strategy.