A comprehensive molecular phylogeny of Sabellidae (Annelida) using a targeted gene capture approach and implications for the evolution of life history strategies

使用靶向基因捕获方法对沙贝科（Annelida）进行全面的分子系统发育分析及其对生活史策略进化的影响

• 批准号: 335341046
• 负责人: Dr. Ekin Tilic
• 金额: --
• 依托单位: Scripps Institution of Oceanography
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/335341046?language=en
• 关键词: comprehensive; molecular; phylogeny; Sabellidae; Annelida

There is a long lasting discussion on the primary organization of the bilaterian metazoans which either was a small directly developing acoelomate or a large, free-spawning coelomate with larvae. Annelids are generally regarded as typical examples for the latter, but not all annelids are large and free-spawning. In order to understand the evolution of body sizes and reproductive modes those annelid groups are of special interest which possess representatives exhibiting variable life history strategies. In this proposal sabellids are used as a case-study to analyze the evolution of life history strategies and body sizes, as well as the co-variability of body size and mode of reproduction. Since the quality of the phylogeny used as backbone for reconstructing evolutionary processes influences the explanatory power of such analyses, a next generation sequencing targeted sequence-capture based approach and transcriptomics will be employed to resolve the phylogeny of Sabellidae. The results will be used to test earlier, morphology-based approaches. Preliminary studies indicate that the molecular approach applied in this study will alter sabellid systematics.

有一个长期持久的讨论的主要组织的两侧后生动物，这是一个小的直接发展acoelomate或一个大的，自由产卵的体腔与幼虫。环节动物通常被认为是后者的典型例子，但并非所有环节动物都是大型和自由产卵的。为了了解身体大小和生殖方式的进化，这些环节动物群体具有特殊的兴趣，具有代表性的表现出不同的生活史策略。本研究以香豆科昆虫为研究对象，分析香豆科昆虫的生活史策略与体型的演化，以及体型与繁殖方式的协变。由于作为骨干重建进化过程中使用的基因组学的质量影响这种分析的解释力，下一代测序靶向序列捕获为基础的方法和转录组学将被用来解决Sabellidae的基因组学。这些结果将用于测试早期的基于形态学的方法。初步研究表明，分子生物学的方法将在本研究中应用改变sabellid系统学。

项目成果

Two new species of Amphiglena (Sabellidae, Annelida), with an assessment of hidden diversity in the Mediterranean.

Amphiglena 的两个新物种（Sabellidae、Annelida），以及对地中海隐藏多样性的评估

• DOI: 10.11646/zootaxa.4648.2.8
• 发表时间: 2019
• 期刊: Zootaxa
• 影响因子: 0.9
• 作者: E​.​;Feerst
• 通讯作者: Feerst