The evolution of Endopterygota - reconstructing the phylogeny of the most successful lineage of organisms with phylogenomic and morphological data

就物种数量而言，内翅目目是最成功的生物谱系(约800,000种)。最近已经做出了巨大的努力来重建它的系统发育。然而，不同的分子数据集和形态特征仍然产生相互冲突的系统发育重建，显然，该类群的进化还远未被理解。为了重建完整代谢系统发展的强大骨干，将汇编广泛的序列数据(EST数据)，并与广泛的形态数据集一起单独进行分析。获得的分枝模式将使我们能够重建不同特征复合体的进化，例如与摄食有关的幼虫头部结构，或胸部运动装置。本课程将讨论内翼类昆虫早期进化的情景。形态特征将由博士生和同事研究和记录。该项目的主要问题是1)全代谢序列的相互关系；2)内翅目不同特征复合体的演化和谱系的基础计划；3)分子和形态数据的数据质量和信息含量的评估。

Endopterygota (= Holometabola) is the most successful lineage of living organisms in terms of species number (ca. 800,000). Strong efforts have been made recently to reconstruct its phylogeny. However, different molecular data sets and morphological characters still yield conflicting phylogenetic reconstructions and apparently the evolution of the group is far from being understood. For the reconstruction of a robust backbone of the holometabolan phylogeny extensive sequence data will be compiled (EST data) and analysed separately and in combination with extensive morphological data sets. The obtained branching pattern will enable us to reconstruct the evolution of different character complexes, such as for instance larval head structures associated with feeding, or the thoracic locomotor apparatus. Scenarios for the early evolution of endopterygote insects will be discussed. Morphological characters will be examined and documented by PhD students and co-workers.The main issues of the project are 1) The interrelationships of the holometabolan orders; 2) The evolution of different character complexes in Endopterygota and the groundplan of the lineage; 3) The assessment of data quality and information content of molecular and morphological data.