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Abstract
The morphology-based taxonomy of Chaenogobius is so complex that some species have been transferred to other genera. To obtain basic information on the phylogenetic relationships among gobies, the complete mitochondrial DNA sequence of C. gulosus was determined using next-generation sequencing. The complete mitochondrial genome is 16,477 bp in length and consists of 22 tRNAs, two ribosomal RNAs, 13 protein-coding genes, and two non-coding regions (the light strand replication origin and the control region). The gene order and locations are similar to those in most other vertebrates. The nucleotide composition of the mitogenome contains 29.1% A, 29.6% T, 15.9% G, and 25.4% C, with a slight AT bias (58.7%). The genus most related to Chaenogobius was Luciogobius, as revealed by phylogenetic relationships derived using a maximum likelihood tree. This mitogenome will help to elucidate the morphological systematic complexity and phylogenetic structure of Chaenogobius and related species.
Declaration of interest
The authors declare no conflicts of interest. The authors alone are responsible for the content and production of this manuscript. This work was supported by a grant from the Korea Institute of Ocean Science and Technology (PE99311).