Evaluation of the Ecdysozoa versus Articulata hypothesis on the basis of complete mitochondrial genome data

基于完整线粒体基因组数据评估蜕皮动物与关节动物假​​说

• 批准号: 5452195
• 负责人: Professor Dr. Gerhard Scholtz
• 金额: --
• 依托单位: Arbeitsgruppe Vergleichende Zoologie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5452195?language=en
• 关键词: Evaluation; Ecdysozoa; versus; Articulata; hypothesis

The envisaged goal of the planned project within the first two years period is the evaluation of the Ecdysozoa versus the Articulata hypotheses and thus to determine the most likely position of the Arthropoda within the Protostomia. Caused by an increasing amount of molecular data, the origin of the Arthropoda is controversely discussed once again. Traditionally most morphological data are viewed as arguments for a sister group relationship between Annelida and Arthropoda favoring the Articulata hypothesis. On the other hand, molecular data place the arthropods rather as the sister taxon to part of the Nemathelmithes (Cycloneuralia) (supporting the taxon Ecdysozoa) and unify annelids together with the molluscs and tentaculates, part of the Plathelminthes and some minor groups to the Lophotrochozoa. Within the planned project total mitochondrial genome sequences -especially of Nemathelminthes- will be determined and phylogenetically compared to mitochondrial genome sequences of Arthropoda, Mollusca, Annelida and Tentaculata either already available in the database or still to be determined by us or cooperating researchers. Furthermore, with the new data, especially those of Nemathelminthes, a much more detailed picture of phylogenetic relationships within the Arthropoda is expected as one of the results of phylogenetic data analyses.

计划项目在头两年内的预期目标是评估蜕皮动物与关节假说，从而确定节肢动物在原口动物中最可能的位置。由于分子数据的增加，节肢动物的起源再次受到争议。传统上，大多数形态学数据被视为环节动物门和节肢动物门之间姐妹群关系的论据，有利于关节假说。另一方面，分子数据将节肢动物视为部分线虫纲（Cycloneuralia）的姐妹分类群（支持蜕皮动物分类群），并将环节动物与软体动物和触手类、部分扁体动物和一些小类群统一为轮毛动物门。在计划的项目中，将确定总线粒体基因组序列（尤其是线虫类），并与节肢动物门、软体动物门、环节动物门和触手动物门的线粒体基因组序列进行系统发育比较，这些序列要么已在数据库中提供，要么仍由我们或合作研究人员确定。此外，利用新的数据，特别是线形动物的数据，预计节肢动物内的系统发育关系的更详细图片将成为系统发育数据分析的结果之一。