Detecting genetic adaptation during marine invasions

检测海洋入侵期间的遗传适应

基本信息

  • 批准号:
    1357386
  • 负责人:
  • 金额:
    $ 62.29万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-03-01 至 2018-02-28
  • 项目状态:
    已结题

项目摘要

Overview:Biological introductions, defined as the establishment of species in geographic regions outside the reach of their natural dispersal mechanisms, have dramatically increased in frequency during the 20th century and are now altering community structure and ecosystem function of virtually all marine habitats. To date, studies on marine invasions focus principally on demographic and ecological processes, and the importance of evolutionary processes has been rarely tested. This knowledge gap has implications for management policies, which attempt to prevent biological introductions and mitigate their impacts. The Asian seaweed Gracilaria vermiculophylla has been introduced to every continental margin in the Northern Hemisphere, and preliminary data indicate that non-native populations are both more resistant to heat stress and resistant to snail herbivory. The project will integrate population genetics, field survey and common-garden laboratory experiments to comprehensively address the role of rapid evolutionary adaptation in the invasion success of this seaweed. Specifically, the PIs will answer the following. What is the consequence of introductions on seaweed demography and mating systems? How many successful introductions have occurred in North America and Europe? Where did introduced propagules originate? Do native, native-source and non-native locations differ in environmental conditions? Do native, native-source and non-native populations differ in phenotype?Intellectual Merit:The intellectual merit of this project is based on three gaps in the literature. First, while biological invasions are widely recognized as a major component of global change, there are surprisingly few studies that compare native and non-native populations in their biology or ecology. Native and non-native populations will be surveyed in a similar manner, allowing assessment of differences in population dynamics, mating system, epifaunal and epiphytic communities, and the surrounding abiotic and biotic environment. Second, G. vermiculophylla exhibits a life cycle typical of other invasive species (including some benthic invertebrates), yet we still lack data on the effects of decoupling the haploid and diploid stages on genetic structure, and in turn, on the evolvability of their populations. Finally, this project will provide unequivocal evidence of an adaptive shift in a marine invasive. To our knowledge, such evolutionary change has been described previously for only a complex of marine copepod species. G. vermiculophylla will serve as a model for understanding evolution in other nuisance invasions, and perhaps lead to novel methods to counter future invasions or their spread.Broader Impacts:There are several broader impacts afforded by this project. The postdoctoral researcher will receive extensive training in population and ecological genetics, develop skills necessary to further development as an independent researcher, and develop career-enhancing interpersonal skills by leading the field trips and mentoring undergraduates. At least four undergraduates will be recruited, all of whom will generate data and will be encouraged to pursue independent projects. The results will be published in peer-reviewed journals and be presented at national and international meetings of both applied and basic scientists, during lectures and seminars at our home universities and at other universities. Finally, a co-PI has successfully implemented after-school hands on plant-ecology programs at the urban public library in their after-school programming for K-5 students (http://www.cclpl.org) with undergraduate research apprentices and collaboration with undergraduate senior education majors. Offerings will be expanded in this after-school program by developing hands on quantitative inquiry based modules on marine invasive species, marine algae and other topics. Undergraduate students on this project will have the opportunity to interact with undergraduate students in other ongoing projects in our group (see http://arabidopsisunpak.org). Thus research students across different areas of ecological-genetics will have the opportunity to share experiences and expertise.
概述:生物引进,定义为在其自然扩散机制范围之外的地理区域建立物种,在世纪频率急剧增加,现在正在改变几乎所有海洋生境的群落结构和生态系统功能。迄今为止,对海洋入侵的研究主要集中在人口和生态过程,进化过程的重要性很少得到检验。这种知识差距对管理政策产生了影响,这些政策试图防止生物引进并减轻其影响。亚洲海藻Gracilaria vermiculophylla已被引入到北方半球的每个大陆边缘,初步数据表明,非本地种群既更能抵抗热应激,又能抵抗蜗牛食草动物。该项目将整合群体遗传学,实地调查和普通花园实验室实验,以全面解决快速进化适应在这种海藻入侵成功中的作用。具体而言,PI将回答以下问题。 引进对海藻的人口统计和交配系统有什么影响?在北美和欧洲有多少成功的引进?引进的繁殖体起源于何处?本土、本土来源和非本土地点的环境条件是否不同?土著、土著来源和非土著人口在表型上是否不同?智力价值:本项目的智力价值基于文献中的三个空白。首先,虽然生物入侵被广泛认为是全球变化的主要组成部分,但令人惊讶的是,很少有研究比较本地和非本地人口的生物学或生态学。 将以类似方式调查本地和非本地种群,以便评估种群动态、交配系统、表生动物和附生植物群落以及周围非生物和生物环境的差异。其次,G.蠕虫具有其他入侵物种(包括一些底栖无脊椎动物)的典型生命周期,但我们仍然缺乏关于分离单倍体和二倍体阶段对遗传结构的影响以及反过来对其种群进化能力的影响的数据。最后,该项目将提供明确的证据,证明海洋入侵物种的适应性转变。据我们所知,这样的进化变化已被描述以前只有一个复杂的海洋桡足类物种。 G. wormulophylla将作为一个模型,了解其他滋扰入侵的进化,并可能导致新的方法来对抗未来的入侵或其spread.Broader影响:有几个更广泛的影响,这个项目提供。博士后研究人员将接受人口和生态遗传学的广泛培训,培养作为独立研究人员进一步发展所需的技能,并通过领导实地考察和指导本科生来培养职业生涯增强的人际交往能力。至少有四名本科生将被招募,他们都将产生数据,并将被鼓励追求独立的项目。研究结果将发表在同行评审的期刊上,并在国内和国际应用和基础科学家会议上,在我们国内大学和其他大学的讲座和研讨会上发表。最后,一个合作PI已经成功地实施了课后动手植物生态计划在城市公共图书馆在他们的课后编程K-5学生(http:www.cclpl.org)与本科研究学徒和本科高级教育专业的合作。Offshore将通过开发基于海洋入侵物种,海藻和其他主题的定量调查模块来扩大这个课后计划。这个项目的本科生将有机会与我们小组其他正在进行的项目的本科生互动(见http://arabidopsisunpak.org)。因此,生态遗传学不同领域的研究生将有机会分享经验和专业知识。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Individuals from non-native populations are stronger and bigger than individuals from native populations of a widespread seaweed
来自非本地种群的个体比来自广泛分布的海藻本地种群的个体更强壮、更大
  • DOI:
    10.1007/s10530-022-02766-x
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Murren, Courtney J.;Krueger-Hadfield, Stacy A.;Clark, Andrew J.;Flanagan, Ben A.;Lees, Lauren E.;Sotka, Erik E.
  • 通讯作者:
    Sotka, Erik E.
Global distribution of cryptic native, introduced and hybrid lineages in the widespread estuarine amphipod Ampithoe valida
  • DOI:
    10.1007/s10592-022-01452-8
  • 发表时间:
    2022-06-11
  • 期刊:
  • 影响因子:
    2.2
  • 作者:
    Harper, Katherine E.;Scheinberg, Lauren A.;Sotka, Erik E.
  • 通讯作者:
    Sotka, Erik E.
Founder effects shape linkage disequilibrium and genomic diversity of a partially clonal invader
  • DOI:
    10.1111/mec.15854
  • 发表时间:
    2021-04-09
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Flanagan, Ben A.;Krueger-Hadfield, Stacy A.;Sotka, Erik E.
  • 通讯作者:
    Sotka, Erik E.
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Erik Sotka其他文献

Erik Sotka的其他文献

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{{ truncateString('Erik Sotka', 18)}}的其他基金

The genetic legacy of an Asian oyster introduction and its disease-causing parasite
亚洲牡蛎引进的遗传遗产及其致病寄生虫
  • 批准号:
    1924599
  • 财政年份:
    2019
  • 资助金额:
    $ 62.29万
  • 项目类别:
    Standard Grant
RUI: Collaborative Research: Trait differentiation and local adaptation to depth within meadows of the foundation seagrass Zostera marina
RUI:合作研究:大叶草码头基础草甸内的性状分化和局部适应深度
  • 批准号:
    1851262
  • 财政年份:
    2019
  • 资助金额:
    $ 62.29万
  • 项目类别:
    Standard Grant
Collaborative Research: Cascading effects of an invasive seaweed on estuarine food webs of the southeastern US
合作研究:入侵海藻对美国东南部河口食物网的连锁效应
  • 批准号:
    1057713
  • 财政年份:
    2011
  • 资助金额:
    $ 62.29万
  • 项目类别:
    Standard Grant
RUI: SBBI: Phylogenetic effect on host use within generalist herbivores: a case study using marine amphipods in the family Ampithoidae (Crustacea: Amphipoda)
RUI:SBBI:对通才食草动物宿主使用的系统发育影响:使用片足类科海洋片足类动物的案例研究(甲壳纲:片足类)
  • 批准号:
    0919064
  • 财政年份:
    2009
  • 资助金额:
    $ 62.29万
  • 项目类别:
    Standard Grant
The evolution of feeding tolerance for chemically-rich seaweeds among herbivore populations: a tropical-temperate contrast
草食动物种群对富含化学物质的海藻的摄食耐受性的演变:热带与温带的对比
  • 批准号:
    0550245
  • 财政年份:
    2006
  • 资助金额:
    $ 62.29万
  • 项目类别:
    Standard Grant

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