Molecular phylogeny and speciation within a regional fauna

区域动物群内的分子系统发育和物种形成

• 批准号: 154292-2012
• 负责人: Taylor, Eric
• 金额: $ 3.64万
• 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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569406
• 关键词: Molecular; phylogeny; speciation; within; regional

The central goal of my research program is to understand the origins and persistence of biodiversity at multiple levels - from allelic variation at specific genetic loci to the assemblage of species at a biogeographic scale. Specifically, the long-term themes of my research program are to: (i) document the patterns of evolutionary divergence within and among natural populations, (ii) test hypotheses concerning the origins and persistence of this variation and its relevance to processes such as local adaptation and speciation, and (iii) to apply this knowledge to the conservation of biodiversity. I use freshwater and marine fishes, principally in northwestern North America and the Arctic, as model systems to address these themes which constitute central inquiries in organismal and evolutionary biology. My research poses questions such as: what are the evolutionary interrelationships amongst species and what biogeographic processes (e.g., tectonics, sea level changes, climate change) have shaped extant diversity? What processes influence the extent and outcome of hybridization between species? What habitat features influence the extent and patterns of adaptive and neutral variation among populations? We integrate studies of processes acting over millions of years to those acting across single years and generations. We employ both genetic and ecological methods in hypothesis testing. The significance of the proposed research involves: (i) addressing a fundamental query in evolution - what processes generate and sustain biodiversity?, (ii) providing much needed training in taxonomy and organismal diversity in Canada, (iii) providing some emphasis for (i) and (ii) in northern and Arctic areas which are relatively poorly known ecosystems, and (iv) applying all of the knowledge in (i)-(iii) in the effective design of conservation programs in the face of human-induced environmental change.

我的研究计划的中心目标是了解生物多样性的起源和持久性 多个层面——从特定遗传位点的等位基因变异到某个位置的物种组合 生物地理尺度。具体来说，我的研究计划的长期主题是：（i）记录自然种群内部和之间的进化分歧模式，（ii）测试假设 关于这种变化的起源和持续性及其与当地等过程的相关性 适应和物种形成，以及（iii）将这些知识应用于生物多样性的保护。我用 淡水和海洋鱼类，主要是北美西北部和北极地区的鱼类，作为解决这些主题的模型系统，这些主题构成了有机体和进化生物学的中心研究。我的 研究提出了诸如以下问题：物种之间的进化相互关系是什么？ 哪些生物地理过程（例如构造、海平面变化、气候变化）塑造了现存的 多样性？哪些过程影响物种间杂交的程度和结果？什么 栖息地特征影响种群间适应性和中性变异的程度和模式？ 我们将数百万年作用过程的研究与单年作用过程的研究结合起来， 几代人。我们在假设检验中采用遗传和生态方法。 意义 拟议的研究涉及：（一）解决进化中的一个基本问题——什么过程产生和维持生物多样性？（二）提供急需的分类学和生物多样性培训 加拿大，(iii) 对条件相对较差的北部和北极地区的 (i) 和 (ii) 给予一定的重视 已知的生态系统，以及（iv）应用（i）-（iii）中的所有知识来有效设计 面对人类引起的环境变化的保护计划。