Complete mitochondrial genome of the hydrothermal vent barnacle (Cirripedia, Thoracica).

Thoracican barnacles are common in hydrothermal vent fields. Here, we characterized the first mitogenome of a hydrothermal vent barnacle. The mitogenome of was 15,585 bp in length and had the typical pancrustacean gene arrangement. Its protein-coding genes (PCGs) were very similar in terms of length, AT content, and start and stop codons to those of other thoracican species. The phylogenetic tree constructed with 13 PCGs divided balanomorph barnacles, including . , into two clades. This will further our understanding of the evolution of hydrothermal vent barnacles using mitogenomes, although further mitogenomic analysis of undetermined taxa is required.