Identification of the complete mitochondrial genome of the pacific white shrimp Litopenaeus vannamei (Decapoda: Penaeidae)

Abstract

The complete mitochondrial genome (mitogenome) of Litopenaeus vannamei was determined to be 15 989 bp in size, it contains 22 tRNA genes, 13 protein-coding genes (PCGs), two rRNA genes and a D-loop region. The nucleotide composition was biased toward A + T nucleotides (67.8%) and the AT skew of this mitogenome was slightly negative (−0.025). All tRNA genes displayed a typical clover-leaf structure, except for trnS1 (AGN). Thirteen PCGs were initiated by ATN codons, except for cox1 gene which was initiated by ACG. Four of the 13 PCGs had the incomplete termination codon by T. The rrnL was 1371 bp and the rrnS was 853 bp, and the AT content of the combined rRNA genes was 70.9%. The D-loop region of the mitogenome was 985 bp in length and the A + T content was 82.7%, and no tandem repeat was found in this region. Phylogenetic analysis showed that the placement of L. vannamei was within the Penaeidae.

Keywords:

• Decapoda
• Litopenaeus vannamei
• mitochondrial genome
• Penaeidae

Declaration of interest

This work was supported by Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection (JLCBE14006), the Natural Science Foundation of Education Department of Jiangsu Province (12KJA180009 and 13KJB180027), and the Natural Science Foundation of Jiangsu Province (BK20140461), the Yancheng City Agricultural Science and Technology Guiding Project (YKN2014022), and Jiangsu Key Laboratory for Bioresources of Saline Soils (JKLBS2014013). The authors declare no competing interests.