School of Wetland, Yancheng Teachers University, Yancheng 224007, People's Republic of China; School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, People's Republic of China.
School of Wetland, Yancheng Teachers University, Yancheng 224007, People's Republic of China.
Genomics. 2021 Jan;113(1 Pt 2):429-439. doi: 10.1016/j.ygeno.2020.08.033. Epub 2020 Sep 2.
Decapoda is one of the most diverse crustacean orders, and has become an important research subject. However, the phylogenetic relationships among the main lineages of Decapoda remain uncertain, especially in the order Brachyura. Herein, we sequenced the whole mitochondrial genome of V. litterata and constructed a phylogenetic tree to understand its phylogenetic relationships with other species. The results showed that the mitochondrial genome of V. litterata was generally similar to mitogenomes of Metazoa reported in the literature, with a size of 16,247 bp, 37 genes, and a control region. Both AT-skew and GC-skew were negative, indicating more abundant Cs and Ts than Gs and As. The gene arrangement of V. litterata is identical to those of Eriocheir hepuensis, Cyclograpsus granulosus, Hemigrapsus sanguineus, Helicana wuana, and Helice tientsinensis but differs from the pancrustacean ground pattern and typical arrangement of Brachyuran crabs. Phylogenetic reconstruction showed that V. litterata belongs to the Varunidae.
十足目是甲壳动物中最多样化的目之一，已成为一个重要的研究对象。然而，十足目主要支系之间的系统发育关系仍不确定，尤其是在短尾下目。本文测定了中华绒螯蟹的线粒体基因组全序列，并构建了系统发育树，以了解其与其他物种的系统发育关系。结果表明，中华绒螯蟹的线粒体基因组与文献中报道的Metazoa 的线粒体基因组总体相似，大小为 16247bp，包含 37 个基因和一个控制区。无论是 AT 倾斜还是 GC 倾斜均为负值，表明 C 和 T 比 G 和 A 更丰富。中华绒螯蟹的基因排列与拟穴青蟹、三疣梭子蟹、日本沼虾、武汉拟沼虾和天津厚蟹相同，但与泛甲壳动物的基本模式和典型短尾下目螃蟹的排列不同。系统发育重建表明，中华绒螯蟹属于绒螯蟹属。
