Next generation sequencing yields the complete mitogenome of nereid worm, Namalycastis abiuma (Annelida: Nereididae)

In this study, the complete mitogenome sequence of nereid worm, Namalycastis abiuma (Annelida: Nereididae), has been decoded for the first time by low coverage genome sequencing method. The overall base composition of N. abiuma mitogenome is 30.8% for A, 24.6% for C, 14.0% for G and 30.6% for T, and has GC content of 38.6%. The assembled mitogenome, consisting of 15 265 bp, has unique 13 protein-coding genes (PCGs), 21 transfer RNAs and two ribosomal RNA genes. The complete mitogenome of N. abiuma shows 69% identities to Tylorrhynchus heterochaetus. All PCGs, tRNA and rRNA genes were encoded on H-strand. The potential D-loop is 827 bp in length and located between tRNA-Gly and tRNA-Trp. The complete mitogenome provides essential and important DNA molecular data for further phylogenetic and evolutionary analysis for Annelida.