The foundness of colours and complex species taxonomy- a DNA based approach for revealing the genealogical structure in the European rose chafer (Cetonia aurata L.)

颜色和复杂物种分类学的发现——一种基于 DNA 的方法，用于揭示欧洲玫瑰金龟子 (Cetonia aurata L.) 的谱系结构

• 批准号: 65983763
• 负责人: Dr. Dirk Ahrens
• 金额: --
• 依托单位: Sektion Coleoptera
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/65983763?language=en
• 关键词: foundness; colours; complex; species; taxonomy

Using molecules to address questions of taxonomy and population structure is perceived as the most promising approach to investigate how biological systems are organized and to infer about their history. Alternativly to traditional morphology-based taxonomy and typological classification, we intend to overcome some limitations of this approach using mitochiondrial and nuclear sequences to reconstruct the phylogeography of the European rose chafer Cetonia aurata, a flaship-species for issues of natural conservation and one of the most attractive scarab beetles in central Europe. Previous prelimiary sequence analyses have revealed some distinct genetic structure in mitochondrial DNA which is neither consistent with subspecies so far defined nor with different geographical occurrences. With a comprehensive sampling of the different populations of the entire distribution range of the species with respect to the numerous existing colour forms, and closely related species and we will uncover not only the historical biogeography of the species including their refugial areas during glaciation periods but also try to explore whether the present colour polymorphism is coupled in some exctend to the genetic structure in the species. In addition, we will explore how so far used morphological charaters correlate with the tree patterns obtained. Based on calibration of the tree from a wider phylogenetic analaysis we plan to introduce a time scale to our reconstructions. The results will provide us hopefully useful information about patterns of diversification in this species complex and the underlying processes leading to the genetic structure of the species. Furthermore, we hope to experience methodologies of DNA taxonomy more in detail in a context of critical and extreme cases of species taxonomy (species delimitation) such as in closely related taxa, alloand parapatric populations and subspecies.

利用分子来解决分类学和种群结构的问题被认为是研究生物系统如何组织和推断其历史的最有前途的方法。与传统的基于形态的分类和类型分类不同，我们将利用线粒体和核序列来重建欧洲玫瑰花的系统地理，这是一个自然保护问题的热点物种，也是中欧最具吸引力的圣甲虫之一。先前的初步序列分析揭示了线粒体DNA中一些独特的遗传结构，这些结构既不符合迄今为止定义的亚种，也不符合不同的地理分布。通过对该物种整个分布范围内不同种群的大量现有颜色形态和近缘种的综合采样，我们不仅将揭示该物种在冰川期的历史生物地理学，包括它们的避难所，而且还将试图探索目前的颜色多态性是否在某种程度上与该物种的遗传结构相耦合。此外，我们将探讨迄今为止使用的形态学特征如何与获得的树模式相关联。基于更广泛的系统发育分析对树的校准，我们计划在重建中引入一个时间尺度。这些结果将为我们提供有关该物种复杂的多样化模式和导致该物种遗传结构的潜在过程的有用信息。此外，我们希望在物种分类学（种界）的关键和极端情况的背景下，如在密切相关的分类群、异源和异源种群和亚种中，更详细地体验DNA分类学方法。