COLLABORATIVE RESEARCH: Latitudinal variation in invasive plant-herbivore interactions and implications for invasion success

合作研究：入侵植物与草食动物相互作用的纬度变化及其对入侵成功的影响

基本信息

批准号：
1050084
负责人：
James Cronin
金额：
$ 32.7万
依托单位：
Louisiana State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-03-01 至 2016-02-29
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1050084&HistoricalAwards=false
关键词：
COLLABORATIVE RESEARCH Latitudinal variation invasive

项目摘要

Recent studies with invasive species have revealed that evolution plays an important role in the successful invasion of new habitats. For plant species involved in continent-wide invasions, the expectation is that the well known north-south increase in the number of herbivore species should favor the rapid evolution of increased resistance to herbivores at lower latitudes. This prediction will be tested using the common reed, Phragmites australis. The common reed is widely distributed across European and North American marshes; in the past 100 years a European variety of this species has invaded and rapidly spread throughout North America. The first objective is to test whether the common reed has undergone rapid evolution to form a north-south gradient in traits associated with anti-herbivore defense. The second objective is to quantify differences in plant defenses between native and invasive varieties of the common reed that occur together in the same marshes and on separate continents, and to evaluate how these differences may affect invader success. This will be the first study to test whether herbivores influence the evolution and the invasion success of invasive species at the scale of whole continents. This research will provide invaluable data regarding the potential negative effects that the invasive common reed variety is having on the less common varieties that are native to North America. The PIs will provide research experience, mentorship and training for two graduate and up to four undergraduate students. The PIs will also participate in a variety of programs that promote undergraduate research and public awareness of the detrimental effects of invasive species.

对入侵物种的最新研究表明，进化在成功入侵新栖息地中起着重要作用。对于参与整个大陆范围入侵的植物物种，人们期望的是，众所周知的食草动物数量的北南增加应该有利于较低纬度的食草动物的耐药性快速发展。该预测将使用普通芦苇phragmites australis进行测试。普通的芦苇被广泛分布在欧洲和北美沼泽中。在过去的100年中，欧洲各种该物种已入侵并迅速散布在北美。第一个目的是测试普通芦苇是否经历了快速发展，以在与抗赫养育防御相关的特征中形成南北梯度。第二个目标是量化在同一沼泽和单独的大陆上一起发生的常见芦苇的天然和侵入性品种之间的植物防御差异，并评估这些差异如何影响入侵者的成功。这将是第一项测试草食动物是否影响整个大陆规模上入侵物种的进化和入侵成功的研究。这项研究将提供有关侵入性共同芦苇品种对北美本地较不常见品种的潜在负面影响的宝贵数据。 PI将为两位研究生和多达四个本科生提供研究经验，指导和培训。 PI还将参加各种计划，以促进本科研究和公众对入侵物种的有害影响的认识。