SG: The role of species interactions and coevolution in speciation
SG:物种相互作用和共同进化在物种形成中的作用
基本信息
- 批准号:1556568
- 负责人:
- 金额:$ 14.98万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-04-01 至 2020-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Plants and insects are groups with large numbers of species that have big impacts on both natural and agricultural systems. One reason these groups are thought to be so diverse is because of their interactions with one another. Evolutionary change in plants can impact evolutionary change in insects, and this is likely one mechanism by which new species are formed, a central question in evolutionary biology research. These reciprocal evolutionary responses might be caused by two different types of interactions between plants and insects. One type of interaction, termed mutualism, is mutually beneficial to both species. For example, insect pollinators move pollen among plants as they gather food, and both the plants and insects benefit from this type of interaction. A second type of interaction is antagonism, where one species benefits at the cost of the other. Insects use of plants as food is an example of antagonism that has led to the evolution of toxic plant chemicals, many of which are used in medical applications. One major unanswered question is whether the diversity of plants and insects observed in nature is mainly the result of mutualistic or antagonistic interactions. Understanding the relative roles of each is critical for predicting how plant and insects will respond to each other through time and will help guide strategies for increasing pollination services provided by insects and reducing the impact of insect pests. In addition, the research will be used in creating a workshop for middle school students through hands-on experiments examining the importance of plant-insect interactions in natural and agricultural settings. The research will use a textbook example of coevolution and adaptive radiation to test the relative roles of mutualistic and antagonistic coevolution in generating reproductive isolation and speciation. The obligate specialized interaction between yuccas and their yucca moth pollinators has both mutualistic and antagonistic components. Female moths use specialized tentacular mouthparts to collect pollen and actively pollinate yuccas, and then deposit eggs near developing yucca seeds that their larvae eat. The evolution of tentacles has been suggested to be a key innovation in the mutualism and diversification of pollinator moths. Although previous research has highlighted trait divergence in antagonistic traits, there has been no comparative survey of trait divergence in the key mutualistic trait, moth tentacles, or of pollination behavior. Comparative analyses of mutualistic and antagonistic traits will be combined with tests of performance of pollinators on natal vs. non-natal yucca species. Specifically, we will compare the ability of moths to be effective pollinators and herbivores across many yucca species. These analyses will be combined with the examination of mating abilities among host forms of the only generalist moth pollinator species to test if changes in mutualistic or antagonistic traits are instrumental in promoting the formation of reproductive isolation. The project will be the first direct test of how coevolution and the type of species interaction among interacting lineages translates into reproductive isolation and species diversification linking microevolutionary processes with macroevolutionary patterns.
植物和昆虫是具有大量物种的群体,对自然和农业系统都有重大影响。这些群体被认为如此多样化的一个原因是他们彼此之间的互动。植物的进化变化可以影响昆虫的进化变化,这可能是新物种形成的机制之一,这是进化生物学研究的中心问题。这些相互的进化反应可能是由植物和昆虫之间两种不同类型的相互作用引起的。一种相互作用被称为互惠共生,对两个物种都是互利的。例如,昆虫传粉者在植物之间移动花粉,因为它们收集食物,植物和昆虫都从这种类型的相互作用中受益。第二种类型的相互作用是拮抗作用,其中一个物种以另一个物种为代价受益。 昆虫利用植物作为食物是对抗的一个例子,它导致有毒植物化学物质的进化,其中许多用于医疗应用。一个尚未回答的主要问题是,在自然界中观察到的植物和昆虫的多样性主要是互利或拮抗相互作用的结果。了解每一种植物和昆虫的相对作用对于预测植物和昆虫如何随着时间的推移相互反应至关重要,并将有助于指导增加昆虫提供的授粉服务和减少昆虫害虫影响的战略。此外,该研究将用于通过实践实验为中学生创建一个研讨会,研究植物与昆虫在自然和农业环境中相互作用的重要性。这项研究将使用教科书中的共同进化和适应性辐射的例子来测试互惠和对抗共同进化在产生生殖隔离和物种形成中的相对作用。丝兰和它们的丝兰蛾传粉者之间的专性专门化相互作用既有互利性又有拮抗性。雌蛾使用专门的触角口器来收集花粉,并积极地为丝兰授粉,然后在发育中的丝兰种子附近存款卵,它们的幼虫吃。触角的进化被认为是传粉蛾互利共生和多样化的关键创新。虽然以前的研究已经强调了拮抗性状的性状分歧,一直没有比较调查的关键互惠性状,蛾触角,或授粉行为的性状分歧。互利和拮抗性状的比较分析将结合对纳塔尔与非出生丝兰物种的传粉者的性能测试。具体来说,我们将比较蛾的能力,有效的传粉者和食草动物在许多丝兰物种。这些分析将结合检查的交配能力之间的主机形式的唯一的通才蛾传粉者物种,以测试如果互利或拮抗性状的变化是有助于促进生殖隔离的形成。该项目将是第一个直接测试如何共同进化和相互作用的谱系之间的物种相互作用的类型转化为生殖隔离和物种多样化连接微观进化过程与宏观进化模式。
项目成果
期刊论文数量(7)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Tetranorsesquiterpenoids as Attractants of Yucca Moths to Yucca Flowers
四反倍半萜类化合物作为丝兰蛾对丝兰花的引诱剂
- DOI:10.1007/s10886-021-01308-4
- 发表时间:2021
- 期刊:
- 影响因子:2.3
- 作者:Tröger, Armin;Svensson, Glenn P.;Galbrecht, Hans-Martin;Twele, Robert;Patt, Joseph M.;Bartram, Stefan;Zarbin, Paulo H.;Segraves, Kari A.;Althoff, David M.;von Reuss, Stephan
- 通讯作者:von Reuss, Stephan
Intraspecific polyploidy correlates with colonization by arbuscular mycorrhizal fungi in Heuchera cylindrica
- DOI:10.1002/ajb2.1294
- 发表时间:2019-06-01
- 期刊:
- 影响因子:3
- 作者:Anneberg, Thomas J.;Segraves, Kari A.
- 通讯作者:Segraves, Kari A.
Phenotypic plasticity facilitates initial colonization of a novel environment
- DOI:10.1111/evo.13676
- 发表时间:2019-02
- 期刊:
- 影响因子:3.3
- 作者:Sheng Pei Wang;D. Althoff
- 通讯作者:Sheng Pei Wang;D. Althoff
Whole genome duplication does not promote common modes of reproductive isolation in Trifolium pratense
全基因组复制不会促进红车轴草常见的生殖隔离模式
- DOI:10.1002/ajb2.1466
- 发表时间:2020
- 期刊:
- 影响因子:3
- 作者:Porturas, Laura D.;Segraves, Kari A.
- 通讯作者:Segraves, Kari A.
Selection on structural allelic variation biases plasticity estimates
结构等位基因变异的选择会影响可塑性估计
- DOI:10.1111/evo.13723
- 发表时间:2019
- 期刊:
- 影响因子:3.3
- 作者:Santos, Mauro;Matos, Margarida;Wang, Sheng Pei;Althoff, David M.
- 通讯作者:Althoff, David M.
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David Althoff其他文献
David Althoff的其他文献
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{{ truncateString('David Althoff', 18)}}的其他基金
Collaborative Research: BEE: Ecological and coevolutionary feedbacks in multi-mutualist communities
合作研究:BEE:多元互惠社区的生态和共同进化反馈
- 批准号:
2137554 - 财政年份:2022
- 资助金额:
$ 14.98万 - 项目类别:
Standard Grant
Ecological dynamics of multi-mutualist communities
多元共生群落的生态动力学
- 批准号:
1655544 - 财政年份:2017
- 资助金额:
$ 14.98万 - 项目类别:
Standard Grant
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- 资助金额:49.00 万元
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Role of ecological interactions on diversification of coexisting species in microbial communities
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