An integrative approach to systematics and evolution of Trigonopterus, a hyperdiverse genus of flightless weevils from South Asia and the West Pacific

三角翅目昆虫系统学和进化的综合方法，三角翅目象鼻虫是来自南亚和西太平洋的一种高度多样化的不会飞的象鼻虫属

基本信息

批准号：
141722937
负责人：
Dr. Alexander Riedel, since 12/2017
金额：
--
依托单位：
Zoologische Staatssammlung München
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2009
资助国家：
德国
起止时间：
2008-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/141722937?language=en
关键词：
integrative approach systematics evolution Trigonopterus

项目摘要

The high insect diversity of Melanesia is well-known, but its origins and the processes that generated it are barely understood. Here, we propose continuation of a project investigating the evolution and biogeography of the hyperdiverse weevil genus Trigonopterus Fauvel. These flightless beetles have a remarkable tendency towards local endemism. Yet, the accumulated distribution is vast, ranging east-west from Sumatra to Samoa and south-north from New Caledonia to the Philippines. This makes Trigonopterus an ideal model system for bio- and phylogeographic investigations in this geologically highly complex region. In the past years we have described >225 new species and created a phylogeny of > 500 species. Within this framework, the present project will extend evolutionary and biogeographical studies on this group in the area of Australia, New Guinea and Samoa. Present objectives are (1) to prepare time-calibrated phylogenies comprising >1,000 Trigonopterus species; (2) to identify cryptic Australian species and to model their niche evolution; (3) to study ancestral distribution ranges of the Sahul shelf and geologically composite New Guinea; (4) to study speciation and dispersal processes on a local scale in New Guinea; (5) to summarize phylogenetic data for all species at hand and to study the evolution of life histories and key-characters, e.g. stridulatory devices and defensive locking mechanisms, possibly leading to the evolutionary success of the group.

美拉尼西亚的昆虫多样性高是众所周知的，但它的起源及其产生的过程几乎没有理解。在这里，我们提出了一个项目的延续，该项目调查了高象象鼻虫属fauvel的象鼻虫属的进化和生物地理学。这些无飞的甲虫对地方道德主义有着显着的趋势。然而，从苏门答腊到萨摩亚和从新喀里多尼亚到菲律宾的东北部，累积的分布范围很大，从苏门答腊到萨摩亚和南北。这使Trigonopterus成为该地质高度复杂区域生物地理研究的理想模型系统。在过去的几年中，我们描述了> 225种新物种，并创造了> 500种的系统发育。在此框架内，本项目将在澳大利亚，新几内亚和萨摩亚地区对该小组的进化和生物地理研究扩展。目前的目标是（1）准备包括> 1,000种棘突属物种的时间校准的系统发育；（2）确定澳大利亚神秘的物种并建模其利基进化；（3）研究Sahul架子和地质复合新几内亚的祖先分布范围；（4）在新几内亚的局部规模上研究物种形成和分散过程；（5）总结所有手头物种的系统发育数据，并研究生活史和关键特征的演变，例如扭曲的装置和防御性锁定机制，可能导致该组的进化成功。