National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, No.1 Haida South Road, Changzhi Island, Zhoushan, Zhejiang, PR China.
Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation, Hubei Polytechnic University, No.16 Guilin North Road, Huangshi, Hubei, PR China.
Genomics. 2021 Jan;113(1 Pt 2):1054-1063. doi: 10.1016/j.ygeno.2020.11.001. Epub 2020 Nov 5.
In the present study, mitogenomes of the species Trachypenaeus curvirostris and Parapenaeus fissuroides (Decapoda: Dendrobranchiata: Penaeidae) were sequenced. The total lengths of the two species were 15,956 bp and 15,937 bp in length with A + T biases of 67.08% and 67.69%, respectively. Both two species showed positive AT skews (0.016, 0.058) and negative GC skews (-0.254, -0.310). Both mitogenomes contained 13 protein-coding genes, 22 transfer RNA genes, and 2 ribosomal RNA genes. Results of phylogenetic analyses support close relationships among Aristeidae, Benthesicymidae and Solenoceridae. The family Sicyoniidae was observed to be deeply nested within Penaeidae. Within Penaeidae, T. curvirostris and P. fissuroides were most closely related to the genus Parapenaeopsis and Metapenaeopsis, respectively, indicated that these two species belong to Penaeidae. These results will help to better understand the evolutionary position of Penaeidae and provide reference for further phylogenetic research on Penaeoidea species.
在本研究中，测序了物种刀额新对虾和日本囊对虾（十足目：枝鳃亚目：对虾科）的线粒体基因组。这两个物种的全长分别为 15956bp 和 15937bp，A+T 偏倚率分别为 67.08%和 67.69%。这两个物种都表现出正的 AT 偏倚（0.016，0.058）和负的 GC 偏倚（-0.254，-0.310）。两种线粒体基因组均包含 13 个蛋白质编码基因、22 个转移 RNA 基因和 2 个核糖体 RNA 基因。系统发育分析的结果支持了Aristeidae、Benthesicymidae 和 Solenoceridae 之间的密切关系。Sicyoniidae 科被观察到在对虾科内深深地嵌套。在对虾科内，刀额新对虾和日本囊对虾分别与 Parapenaeopsis 和 Metapenaeopsis 属关系最密切，表明这两个物种属于对虾科。这些结果将有助于更好地了解对虾科的进化地位，并为进一步研究对虾类的系统发育提供参考。
