The complete mitochondrial genome of dwarf form of Sthenoteuthis oualaniensis (Cephalopoda: Ommastrephidae) from the South China Sea

The purpleback flying squid (Sthenoteuthis oualaniensis) is a pelagic squid with tremendous potential for commercial exploitation. Sthenoteuthis oualaniensis comprises two forms in the South China Sea, dwarf form and medium-sized form. In this study, we described the complete mitochondrial genome of dwarf form of Sthenoteuthis oualaniensis. The genome is 20320 bp in length, encoding the standard set of 13 protein-coding genes, 20 tRNA genes and 2 rRNA genes, with circular organization. The overall base composition of the whole mitochondrial genome was A (37.23%), T (32.78%), G (10.53%) and C (19.46%) with an AT bias of 70.01%. The longest protein-coding genes of these species was ND5, whereas the shortest ATP8.

紫背飞鱿鱼（Sthenoteuthis oualaniensis）是一种具备极高商业开发潜力的大洋性鱿鱼。该物种在南海海域存在两个类群：矮小型与中型。本研究对紫背飞鱿鱼矮小型的完整线粒体基因组进行了详细描述。该线粒体基因组全长20320 bp，包含一套标准的13个蛋白质编码基因、20个转运RNA（transfer RNA）基因以及2个核糖体RNA（ribosomal RNA）基因，呈环状结构。整个线粒体基因组的整体碱基组成为A（37.23%）、T（32.78%）、G（10.53%）与C（19.46%），AT偏好性达70.01%。该物种中最长的蛋白质编码基因为ND5，最短的则为ATP8。