Analysis of Complete Mitochondrial Genome of <i>Bohadschia argus</i> (Jaeger, 1833) (Aspidochirotida, Holothuriidae)
Bo Ma,
Zhuobo Li,
Ying Lv,
Zixuan E,
Jianxiang Fang,
Chunhua Ren,
Peng Luo,
Chaoqun Hu
Affiliations
Bo Ma
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Zhuobo Li
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Ying Lv
Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Beibu Gulf University, Qinzhou 535011, China
Zixuan E
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Jianxiang Fang
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Chunhua Ren
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Peng Luo
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Chaoqun Hu
CAS Key Laboratory of Tropical Marine Bioresources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Bohadschia argu is a kind of sea cucumber with high economic value; it is the only undisputed species in the genus Bohadschia. In this study, the complete mitochondrial genome (mitogenome) of B. argus was acquired through high-throughput sequencing. The mitochondrial genome of B. argus was 15,656 bp in total length and contained a putative control region (CR) and 37 typical genes of animal mitochondrial genomes, including 13 protein-coding genes (PCGs), 2 ribosomal RNA genes (rrnS and rrnL) and 22 transfer RNA genes (tRNA). The sizes of the PCGs ranged from 168 bp to 1833 bp, and all PCGs except nad6 were encoded on the heavy chain (H). Both rrnS and rrnL were also encoded on the H chain. Twenty-two tRNA genes had positive AT skew and GC skew. All tRNAs had a typical cloverleaf secondary structure except for trnI, in which an arm of dihydrouridine was missing. B. argus shared the same gene arrangement order (the echinoderm ground pattern) as other species in Aspidochirotida. Phylogenetic analysis clearly revealed that B. argus belongs as a member of the Holothuriidae, and it is closely related to members of Actinopyga and Holothuria.
