Complete mitochondrial genome and the phylogenetic position of a new species, Johnius taiwanensis (Perciformes: Sciaenidae) from Chinese waters

Bai-An Lin; Chang-Chang Guo; Lü-Ping Fang; Wei-Di Yang; Min Liu

doi:10.1080/23802359.2020.1718563

Complete mitochondrial genome and the phylogenetic position of a new species, Johnius taiwanensis (Perciformes: Sciaenidae) from Chinese waters

Mitochondrial DNA B Resour. 2020 Jan 27;5(1):920-921. doi: 10.1080/23802359.2020.1718563.

Authors

Bai-An Lin¹, Chang-Chang Guo¹, Lü-Ping Fang¹, Wei-Di Yang¹, Min Liu¹

Affiliation

¹ College of Ocean and Earth Sciences, Xiamen University, Xiamen City, Fujian Province, China.

Abstract

In this study, the complete mitogenome of a new species, Johnius taiwanensis (Chao et al. 2019) was obtained. Its mitogenome is 18,451 bp in length, consisting of 37 genes with the typical gene order and direction of transcription in vertebrates. Gene rearrangement was found in J. taiwanensis. The overall nucleotide composition is: 24.2% A; 18.0% C; 21.1% G, and 36.7% T. Sizes of the 22 tRNA genes range from 66 to 75 bp. Two start codons (ATG and GTG) and three stop codons (TAG, AGA and TAA/TA/T) were detected in 13 protein-coding genes. In the Bayesian tree based on the complete mitogenomes of 26 species (including J. taiwanensis) from the family Sciaenidae, all nodes were strongly supported. The result shows that J. taiwanensis was placed as sister to the Trewavas croaker J. trewavasae of the same genus. The mechanism of gene rearrangement in the genus Johnius merits further investigation.

Keywords: Bayesian tree; New Johnius species; Sciaenidae; mitogenomes; phylogenetic relationship.

Grants and funding

This study was supported by the National Program on Global Change and Air-Sea Interaction [grant no. GASI-02-PAC-YDaut], and Fundamental Research Funds for the Central Universities from Xiamen University [grant no. 20720170077].