A phylogenetic approach to spider diversification

蜘蛛多样化的系统发育方法

• 批准号: RGPIN-2018-05055
• 负责人: Maddison, Wayne
• 金额: $ 8.01万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=766127
• 关键词: phylogenetic; approach; spider; diversification

Two fundamental tasks of biodiversity science are to discover and characterize the basic units of biodiversity (species), and to resolve the pathways of genetic descent by which life diversified (phylogenetic history). We propose to resolve in detail the phylogenetic history of one particular group, the salticid spiders, and apply our results to studies of behavioural evolution, visual ecology, and the role of hybridization in diversification. Using genome-wide data, we will work at the scope of the whole family (which has >6000 species), targeting taxa that will help resolve the number of times three-colour vision has evolved independently (probably at least 4 times), thus enabling comparative studies on how colour vision evolves. We will also focus on the spider genus Habronattus, where previous results hint to an evolutionary interplay among courtship behaviour, chromosome evolution, and hybridization. To interpret the evolution of this group, we will develop new methods to analyze character evolution when phylogenetic histories are complex (technically, with incomplete lineage sorting and introgression). We will continue to improve the informatics infrastructure of phylogenetic biology by enhancing our widely-used analytical tools. In the course of this work we will also discover and describe new species of spiders. We will train highly qualified personnel in theoretical biology and bioinformatics, DNA sequencing and data analysis, biological field work, and arthropod biodiversity studies.

生物多样性科学的两个基本任务是发现和描述生物多样性的基本单位（物种），并解决生命多样化的遗传进化途径（系统发育史）。我们建议详细解决一个特定的组，saliticid蜘蛛的系统发育史，并将我们的研究结果应用于行为进化，视觉生态学，以及多样化杂交的作用。利用全基因组数据，我们将在整个家族（拥有超过6000个物种）的范围内开展工作，目标是有助于解决三色视觉独立进化的次数（可能至少4次）的分类群，从而能够对色觉如何进化进行比较研究。我们也将集中在蜘蛛属Habronattus，以前的结果暗示求偶行为，染色体进化和杂交之间的进化相互作用。为了解释这一群体的进化，我们将开发新的方法来分析系统发育历史复杂时的性状进化（技术上，不完整的谱系排序和渐渗）。我们将继续通过加强我们广泛使用的分析工具来改善系统发育生物学的信息学基础设施。在这项工作的过程中，我们还将发现和描述新的蜘蛛物种。我们将培养理论生物学和生物信息学、DNA测序和数据分析、生物实地工作和节肢动物生物多样性研究方面的高素质人才。