The complete mitochondrial genome and phylogenetic analysis of Spondylus violaceus.

Spondylus violaceus is a species of the bivalve family Spondylidae, commonly known as thorny oyster. Here, we report the complete mitochondrial genome of S. violaceus. The mitochondrial genome of S. violaceus is 30,160 bp in length, which contains 12 protein-coding genes, 2 ribosomal RNA genes and 19 transfer RNA genes. The overall AT content (58.31%) was higher than GC content (41.69%). This is the first record of complete mitochondrial genome in the family Spondylidae, providing the basis for future taxonomic and phylogenetic studies of this bivalve family.