Complete mitochondrial genome of the Arctic green sea urchin Strongylocentrotus droebachiensis (Strongylocentrotidae, Echinoidea)

Abstract

The complete mitochondrial genome was obtained from the assembled genome data sequenced by next-generation sequencing technology from the Arctic green sea urchin Strongylocentrotus droebachiensis. The mitochondrial genome sequence was 15,710 bp in size, and the gene order and contents were identical with previously reported sea urchin mitochondrial genomes. Of 13 protein-coding genes (PCGs), 1 gene (Cytb) had an incomplete stop codon. The base composition of the mitogenome of Arctic S. droebachiensis showed high A + T (58.36%) and anti-G bias (14.86%) on the third position of PCGs.