Complete mitochondrial genome of Metapenaeus affinis (H. Milne Edwards, 1837) and Metapenaeus ensis (De Haan, 1844)

Penaeid shrimp is one of the marine germplasm resources in tropical and subtropical regions. To better understand shrimp germplasm resources and develop cultured shrimp species, the complete mitochondrial genome of Metapenaeus affinis and Metapenaeus ensis was assembled. The length of M. affinis and M. ensis mitochondrial sequences is 15,957 and 15,943, respectively. Both mitochondrial sequences contain 13 protein coding, 22 tRNA, and two rRNA genes. The GC content of the genome was 34.23% and 34.12% in M. affinis and M. ensis, respectively. Phylogenetic analysis indicated that the M. affinis and M. ensis are closely related, and assigned to a branch of Metapenaeus. We assembled and published the mitochondrial genome sequences of these two species, which will provide important information for the research and utilization of shrimp germplasm resources.