The complete mitochondrial genome characterization of Thunnus obesus (Scombriformes: Scombridae) and phylogenetic analyses of Thunnus

Thunnu obesus is important in commercial fisheries around the world. Due to human overfishing, climate change and ocean acidification, it was listed as Vulnerable (VU) under the International Union for the Conservation of Nature. In the present study, the complete mitogenome of T. obesus was determi...

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Bibliographic Details
Published in:Conservation genetics resources 2017-09, Vol.9 (3), p.379-383
Main Authors: Gong, Li, Liu, Li-Qin, Guo, Bao-Ying, Ye, Ying-Ying, Lü, Zhen-Ming
Format: Article
Language:English
Subjects:
Acidification
Animal Genetics and Genomics
Base composition
Biodiversity
Biomedical and Life Sciences
Climate change
Conservation
Conservation Biology/Ecology
Ecology
Evolutionary Biology
Genomes
Life Sciences
Mitochondria
Phylogenetics
Phylogeny
Plant Genetics and Genomics
Replication origins
rRNA
Stop codon
Technical Note
Thunnus obesus
tRNA
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Summary:Thunnu obesus is important in commercial fisheries around the world. Due to human overfishing, climate change and ocean acidification, it was listed as Vulnerable (VU) under the International Union for the Conservation of Nature. In the present study, the complete mitogenome of T. obesus was determined. It is 16,524 bp in length and contains 13 protein-coding genes, 22 tRNA genes, two rRNA genes, one origin of replication on the light-strand (O L ) and a control region (CR). The overall base composition is 28.5, 25.4, 29.4 and 16.7% for A, T, C and G, respectively. The 13 PCGs encode 3797 amino acids in total, most of which use the initiation codon ATG except COI use GTG, and TAA or TAG as the stop codon, except COII, ND4 and Cyt b use an incomplete stop codon T. Additionally, a phylogenetic tree was constructed to explore the taxonomic status of T. obesus , which expects for phylogenetic relationship within Thunnu and further conservation strategies for this species.
ISSN:1877-7252
1877-7260
DOI:10.1007/s12686-017-0688-2