The complete mitogenome of the winged argonaut Argonauta hians and its phylogenetic relationships in Octopoda

The mitogenome of the winged argonaut Argonauta hians (Argonautidae) was decoded using next generation sequencing. The de novo assembled mitogenome consists of 16,130 bp, including 13 protein coding genes, 2 ribosomal RNAs and 22 transfer RNA genes. The gene arrangement is identical to the other available Octopodidae octopus sequences submitted to NCBI. The overall base composition of the A. hians mitogenome is 29.1% A, 6.9% C, 13.2% G and 40.9% T. The phylogenetic analysis of the A. hians mitogenome suggests an ancestral position in the order Octopoda, compared to species in the Amphioctopus, Cistopus and Octopus (Octopodidae) genera. The decoding of the A. hians mitogenome provides insight into the evolutionary history and rises the concern of conservation on this uncommon and ancestral Octopoda species.