Complete Mitochondrial DNA Genomes of Deep-Sea Eels Synaphobranchus brevidorsalis and S. affinis and New Record of S. brevidorsalis from the East Mariana Basin

In this study, we document the first recorded range extension of genus Synaphobranchus from East Mariana Basin in Western Pacific Ocean. We sequenced complete mitochondrial (mt) genome two deep-sea eels (Synaphobranchus brevidorsalis and S. affinis) collected The mt genomes affinis were 16,686 bp 16,677 length, respectively, consisted 13 protein-coding genes, 22 tRNA rRNA genes. Molecular phylogenetic analysis eel species was performed, based on cytochrome c oxidase subunit I (COI) gene using maximum likelihood method. molecular tree demonstrated that congeneric reported previous studies with bootstrap values 100% 100%, respectively. This is report Overall, our study highlights potential approaches identifying diversity distribution