| 项目编号: | 1601333
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| 项目名称: | DISSERTATION RESEARCH: Genetic Mechanisms of Spatial Eco-Evolutionary Dynamics in Range Expansions |
| 作者: | Brett Melbourne
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| 承担单位: | University of Colorado at Boulder
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| 批准年: | 2016
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| 开始日期: | 2016-04-15
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| 结束日期: | 2017-03-31
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| 资助金额: | 19926
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | range expansion
; range shift
; evolutionary contribution
; range edge
; ecological process
; recent research
; range movement
; geographic range
; economic implication
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| 英文摘要: | The proposed research will analyze genomic patterns to test evolutionary contributions to experimental range expansion using a model laboratory system. Recent decades have seen large scale changes of species' geographic ranges, as introductions of invasive species and shifting climate patterns displace organisms from ancestral areas and expand into new regions. Many previous models of range movement rely only on ecological processes while ignoring evolution; recent research, however, suggests that evolution at the expanding range edge might play a key role. Range shifts have important conservation and economic implications that will be informed by these studies. The researchers also conduct a workshop course for K-12 teachers and provide curriculum materials to examine range shifts as a teaching tool.
Several hypotheses will be tested by quantifying patterns in allele frequencies through space and time using flour beetles stored from an already completed laboratory range expansion experiment. The hypotheses to be tested are that (1) core and edge locations of a species range should grow increasingly genetically distinct through time, (2) they should accumulate different genetic variants, with edges containing variants associated with high colonization ability, and (3) the speed of range expansion should correlate with these evolved genetic patterns. Whole genome sequencing will be used to quantify allele frequencies among beetles sampled at different times and locations during the range expansion. The results will not only provide insights into the role of spatial structure in evolution, but they will also have significance for management of invasive species and species shifting ranges due to climate change. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/92523
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Brett Melbourne. DISSERTATION RESEARCH: Genetic Mechanisms of Spatial Eco-Evolutionary Dynamics in Range Expansions. 2016-01-01.
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