Phylogeographic genomics of glacial Atlantic Canada and the North Atlantic

加拿大大西洋冰川和北大西洋的系统发育地理学基因组学

• 批准号: 36767-2009
• 负责人: Carr, Steven
• 金额: $ 1.53万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=421054
• 关键词: Phylogeographic; genomics; glacial; Atlantic; Canada

Phylogeography is the study of genetic relationships in their geographic context. Mitochondrial DNA is a molecule inherited solely through the mother. New biotechnology now makes it possible to determine the complete mtDNA sequence of multiple animal species in a single experiment, which allows these maternal lines to be traced through time and space with great precision. We are examining the return to Atlantic Canada and the North Atlantic of fish and mammal species that would have been unable to survive during successive ice ages over the last several hundred thousand years. Studies of marine species like Atlantic Cod and Harp Seals indicate that their current distributions reflect events tens of thousands of years ago, whereas land animals like Caribou have returned to post-glacial Newfoundland only in the last few thousand years. These studies have practical implications for the stock and conservation management of these species.

系统地理学是在地理环境中研究遗传关系的学科。线粒体DNA是一种完全通过母亲遗传的分子。新的生物技术现在可以在一个实验中确定多个动物物种的完整mtDNA序列，这使得这些母系可以在时间和空间上非常精确地追踪。我们正在研究在过去几十万年的连续冰期中无法生存的鱼类和哺乳动物物种返回加拿大大西洋和北大西洋的情况。对大西洋鳕鱼和竖琴海豹等海洋物种的研究表明，它们目前的分布反映了数万年前的事件，而驯鹿等陆地动物只是在最近几千年才回到冰后期的纽芬兰。这些研究对这些物种的资源和保护管理具有实际意义。