Niche evolution of Tibetan-Himalayan Rhyacophilidae (Trichoptera) II: Comparative Phylogeography and Niche Differentiation of Alpine/Subalpine Himalopsyche of the Himalayan/QTP Region

藏族-喜马拉雅红蜱科（毛翅目）的生态位演化II：喜马拉雅/青藏高原地区高山/亚高山喜马拉雅动物的比较系统发育和生态位分化

• 批准号: 224580917
• 负责人: Dr. Sami Domisch
• 金额: --
• 依托单位: Abteilung 2: Ökosystemforschung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/224580917?language=en
• 关键词: Niche; evolution; Tibetan; Himalayan; Rhyacophilidae

In the first phase of DFG research cluster PAK 807/1 Origin and Evolution of Tibetan-Himalayan biotas we assessed the deeper diversification, biogeography and niche evolution of the caddisfly genus Himalopsyche in the Himalaya/Qinghai-Tibet Plateau (QTP) region. In the second phase, we will focus on recent biodiversity evolution, i.e. intraspecific diversification and species-level niche differentiation. These processes are most likely associated with species range contractions and expansions during glacial cycles. The objective of this follow-up proposal is thus to study the phylogeography and niche differentiation of selected caddisfly species in the Himalayan/QTP region. Specifically we will1) compare the phylogeography of two alpine/subalpine species pairs of Himalopsyche along the Himalayan range and the Hengduan Mountains with a large-scale multi-locus phylogeographic approach based on anchored hybrid enrichment (AHE) data to test hypotheses using a coalescent analytical framework; and2) develop a high-resolution spatial dataset of relevant freshwater environmental layers along the stream network occupied by our target species.Using these data, as well as paleoclimate and paleovegetation models generated in the umbrella project (Proposal A: Hickler et al. Neogene dynamics of climate and biomes as potential drivers of diversification patterns in the Qinghai-Tibet Plateau (QTP) region), we will thenA) assess genetic population structure and infer the demographic and migratory history of the target species;B) elucidate putative niche differentiation of the alpine/subalpine species pairs, including climate niches and biome associations; andC) infer the historical distributions in the Last Glacial Maximum (LGM) and Last Interglacial (LIG) based on a comparison of species distribution model experiments and molecular data analysis.The project will generate insights on the importance of topography on migration patterns of aquatic insects and the role of mountain ranges as species pumps under environmental change.

在DFG研究集群PAK 807/1西藏-喜马拉雅生物群的起源和进化的第一阶段，我们评估了喜马拉雅/青藏高原（QTP）地区石蛾属Himalopsyche的更深层次的多样性，地理分布和生态位进化。在第二阶段，我们将集中在最近的生物多样性演变，即种内多样化和物种水平的生态位分化。这些过程最有可能与冰川周期中物种分布范围的收缩和扩张有关。因此，本后续建议的目的是研究喜马拉雅/QTP地区的选择caddisfly物种的生态地理和生态位分化。具体而言，我们将1）比较喜马拉雅山脉和横断山脉沿着的两个高山/亚高山喜马拉雅物种对的生态地理学，采用基于锚定杂交富集（AHE）数据的大规模多地点生态地理学方法，使用合并分析框架来检验假设; 2）发展高-我们的目标物种所占据的河流网络沿线沿着相关淡水环境层的高分辨率空间数据集。使用这些数据，以及伞项目中生成的古气候和古植被模型（建议A：Hickler et al. Neogene dynamics of climate and biomes as potential drivers of diversification patterns in the QTP region），我们将评估遗传种群结构并推断目标物种的人口统计和迁移历史; B）阐明高山/亚高山物种对的假定生态位分化，包括气候生态位和生物群系关联;推断末次盛冰期和末次间冰期的历史分布基于物种分布模型实验和分子数据分析的比较。该项目将产生对以下重要性的见解：地形对水生昆虫迁移模式的影响以及山脉在环境变化下作为物种泵的作用。