Wu Rui-Wen, Liu Xiong-Jun, Wang Sa, Roe Kevin J, Ouyang Shan, Wu Xiao-Ping
School of Life Sciences, Nanchang University, Honggutan-New-District, Nanchang 330031, China Nanchang University Nanchang China.
School of Resource, Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China Iowa State University Ames United States of America.
Zookeys. 2019 Jan 3(812):23-46. doi: 10.3897/zookeys.812.29908. eCollection 2019.
The Yangtze River basin is one of the most species-rich regions for freshwater mussels on Earth, but is gravely threatened by anthropogenic activities. However, conservation planning and management of mussel species has been hindered by a number of taxonomic uncertainties. In order to clarify the taxonomic status and phylogenetic position of these species, mitochondrial genomes of four species (, , and ) were generated and analyzed along with data from 43 other mitogenomes. The complete F-type mitogenomes of , , , and are 15652 bp, 15855 bp, 15892 bp, and 15844 bp, respectively, and all four F-type mitogenomes have the same pattern of gene arrangement. ML and BI trees based on the mitogenome dataset are completely congruent, and indicate that the included Unionidae belong to three subfamilies with high bootstrap and posterior probabilities, i.e., Unioninae (, , , and ), Anodontinae (, , , , , and ), and Gonideinae (, , , and ). Results also indicate that has affinities with and and is a member of the subfamily Anodontinae.
长江流域是地球上淡水贻贝物种最为丰富的地区之一，但正受到人类活动的严重威胁。然而，贻贝物种的保护规划和管理因一些分类学上的不确定性而受阻。为了阐明这些物种的分类地位和系统发育位置，我们测定并分析了四种贻贝（、、和）的线粒体基因组，并结合了其他43个线粒体基因组的数据。、、、和的完整F型线粒体基因组分别为15652 bp、15855 bp、15892 bp和15844 bp，且所有四个F型线粒体基因组具有相同的基因排列模式。基于线粒体基因组数据集构建的最大似然树（ML树）和贝叶斯推断树（BI树）完全一致，表明所包含的蚌科物种属于三个亚科，且具有较高的自展支持率和后验概率，即珠蚌亚科（、、、和）、无齿蚌亚科（、、、、和）和球蚬亚科（、、、和）。结果还表明与和具有亲缘关系，属于无齿蚌亚科。
