The early evolution of the Neopterygii

新翅目的早期进化

• 批准号: 155467782
• 负责人: Dr. Adriana López-Arbarello
• 金额: --
• 依托单位: Staatssammlung für Paläontologie und Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/155467782?language=en
• 关键词: early; evolution; Neopterygii

The Neopterygii are the largest and most important group of fishes, and they also include the teleosts and thus some 50 % of modern vertebrate biodiversity. However, the origin and early evolution of neopterygians is still poorly understood, as are the interrelationships of their main lineages. This situation is mainly due to two interrelated factors, the unresolved question of the out group to Neopterygii, and many problematic homologies within basal neopterygians. The objective of the current project, which is laid out for a total period of six years, are thus a clarification of primary hypotheses of homologies in basal neopterygians and their testing in a large-scale phylogenetic analysis, thus clarifying the interrelationships of the major lineages of the Neopterygii. In the first three years applied for here, emphasis will be put on the choice of out groups, including a detailed revision of the phylogenetic position of the Chondrostei to the neopterygians and the monophyly of Neopterygii, and on the primary homologies of several important character complexes within basal neopterygians. This part will thus form the foundation for the analysis of neopterygian interrelationships in the second period of the project.

新鳍鱼是最大、最重要的鱼类，其中还包括硬骨鱼，因此约占现代脊椎动物生物多样性的 50%。然而，人们对新翅目的起源和早期进化及其主要谱系的相互关系仍然知之甚少。这种情况主要是由于两个相互关联的因素造成的，即新翅目外类群的问题尚未解决，以及基部新翅目内部存在许多有问题的同源性。当前项目的总时间为六年，其目标是澄清基础新翅目同源性的主要假设并在大规模系统发育分析中进行测试，从而阐明新翅目主要谱系的相互关系。在此申请的前三年，重点将放在外类群的选择上，包括详细修订软骨纲对新翅目的系统发育位置和新翅目的单系性，以及基部新翅目内几个重要性状复合体的主要同源性。因此，这部分将为项目第二阶段分析新翅目相互关系奠定基础。