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研究集群的第一阶段，藏族 - 藏族生物群体的pak 807/1起源和进化，我们评估了喜马拉雅山/Qinghai-tibet Plackeau（QTP）的Caddisfly shimalopsyche的更深多样化，生物地理学和利基的进化。在第二阶段，我们将重点关注最近的生物多样性进化，即种内多元化和物种水平的利基分化。这些过程很可能与冰川周期期间的物种范围收缩和扩张有关。因此，此后续提案的目的是研究喜马拉雅/QTP地区选定的caDdisfly物种的植物地理学和细分区分。具体而言，我们将进行1）比较喜马拉雅山脉和Hengduan山脉的两个高山/亚高山物种对的植物地理学对基于锚定的混合富集（AHE）数据，以使用煤炭分析框架分析框架测试假设基于锚定的混合富集（AHE）数据，以及大规模的多层型植物学方法；和2）开发一个高分辨率的空间数据集，该数据集的相关淡水环境层沿着我们的目标物种占据的流网络。使用这些数据，以及伞项目中产生的古气候和古植物模型（提案A：Hickler等人。遗传种群结构并推断目标物种的人口统计学和迁移历史； b）阐明高山/亚高山物种对的推定的利基分化，包括气候壁nir和生物群体关联； ANDC）基于物种分布模型实验和分子数据分析的比较，推断出最后冰川最大值（LGM）和最后一次冰川（LIG）中的历史分布。该项目将洞悉地形对水生昆虫迁移模式的重要性，以及在环境变化下，物种泵的作用。