探索巴布罗尼亚的物种多样性和在Erpobdelliformes (Clitellata:Annelida) 亚序体内的遗传关系
Yingkui Liu1,2, Xinxin Fu1, Yu Wang1
1Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry & Molecular Biology, Xuzhou Medical University, Xuzhou, Jiangsu, People's Republic of China.
PeerJ
|June 3, 2024
概括
这项研究通过下一代测序来澄清淡水水属Barbronia的系统性. 它揭示了Barbronia weberi是一个单一的物种,而Barbronia gwalagwalensis至少包括两个不同的物种.
科学领域:
- 动物学 动物学
- 系统学 系统学 系统学
- 分子生物学分子生物学
背景情况:
- 由于分子数据有限,淡水水属Barbronia (Erpobdelliformes: Salifidae) 缺乏足够的系统研究.
- 现有的巴布罗尼亚的GenBank数据很少,这阻碍了物种识别和在Salifidae中的家族遗传定位.
- 巴布罗尼亚维贝里是一种分布广泛的物种,但它的分类学地位需要进一步的分子审查.
研究的目的:
- 通过使用全面的分子数据来解决 Barbronia 血属的系统性.
- 为了澄清巴布罗尼亚的物种界限,特别是巴布罗尼亚gwalagwalensis群.
- 为了确定巴布罗尼亚在类动物家族中的遗传地位.
主要方法:
- 采用下一代测序 (NGS) 来获得整个线粒体基因组和18S/28SrDNA序列.
- 在COI序列上使用了种类划分方法 (bGMYC,bPTP) 并计算了未经校正的COIp距离.
- 使用贝叶斯推理 (BI) 和最大概率 (ML) 构建了四个位置 (COI,12S,18S,28S rDNA) 的分子数据矩阵,用于用贝叶斯推理 (BI) 和最大概率 (ML) 进行遗传学分析.
主要成果:
- 种类划分分析表明,巴布罗尼亚arcana,B. weberiformosana和B. wuttkei是巴布罗尼亚weberi的同义词.
- 根据COI p-距离,Barbronia gwalagwalensis群被分为至少两个不同的初级物种假设 (PSH).
- 遗传学分析强有力的支持Erpobdelliformes家族的单,并将Barbronia置于Salifidae中,与Odontobdella和Mimobdella有着密切的关系.
结论:
- 这项研究确立了B. weberi作为单一物种,并在B. gwalagwalensis复合体内划分了至少两种物种.
- 对于同时采集线粒体和核标记物的NGS的应用是有效的,用于阐明水的多样性和原生态.
- 这些发现有助于更好地了解类系统学和Erpobdelliformes中的进化关系.
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