RUI: Evolutionary and ecological importance of hybridization and cryptic diversity in a rapidly expanding aquatic plant

RUI：快速扩张的水生植物中杂交和隐秘多样性的进化和生态重要性

• 批准号: 0918553
• 负责人: Ryan Thum
• 金额: $ 13.5万
• 依托单位: Grand Valley State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0918553&HistoricalAwards=false
• 关键词: RUI; Evolutionary; ecological; importance; hybridization

Ecological properties that facilitate the invasion of weedy species into native populations have been studied intensively. In contrast the potentially critical role for evolutionary processes in many biological invasions has rarely been considered. This project will explore the extent to which hybridization (crosses between species) influences invasion of the aquatic plant Myriophyllum heterophyllum (Water Milfoil), and the effects of invasion history on the evolutionary trajectories of genetically distinct lineages. Specifically, this research will utilize numerous molecular markers to compare patterns of gene flow in the native and invaded range, and will utilize a field reciprocal transplant experiment to determine whether hybrid lineages grow more invasively than non-hybrid lineages.Biological invasions are widely recognized as a major social, economic, and environmental threat. Water Milfoil is a significant invasive in the northeastern United States and severely impacts recreation and property values. The proposed research activities will highlight the evolutionary and genetic contributions to invasiveness and will directly influence aquatic plant management decisions and policy. Resulting data also will be incorporated into a new course in Molecular Ecology and the project will provide research experiences to several undergraduate students and one Master's degree student at an undergraduate institution.

促进杂草物种入侵到本地种群的生态特性已被深入研究。 相反，进化过程在许多生物入侵中的潜在关键作用却很少被考虑。 该项目将探讨杂交（物种之间的杂交）影响水生植物狐尾藻（水Milfoil）入侵的程度，以及入侵历史对遗传上不同谱系进化轨迹的影响。 具体来说，这项研究将利用大量的分子标记来比较模式的基因流在本地和入侵的范围，并将利用一个领域的相互移植实验，以确定是否混合血统增长更具侵略性比non-hybrid lineages.Biological入侵被广泛认为是一个重大的社会，经济和环境的威胁。 水芹是美国东北部的一种重要入侵植物，严重影响了娱乐和财产价值。 拟议的研究活动将突出进化和遗传对入侵的贡献，并将直接影响水生植物管理决策和政策。 由此产生的数据也将被纳入分子生态学的新课程，该项目将提供研究经验，在本科院校的几个本科生和一个硕士学位的学生。