| 项目编号: | 1701323
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| 项目名称: | DISSERTATION RESEARCH: Phylogenomics and Evolutionary Rates associated with Salinity and Thermal Shifts in Centrarchiformes |
| 作者: | Prosanta Chakrabarty
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| 承担单位: | Louisiana State University & Agricultural and Mechanical College
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| 批准年: | 2017
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| 开始日期: | 2017-07-01
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| 结束日期: | 2019-06-30
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| 资助金额: | 17967
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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: | macro-evolutionary question
; evolutionary transition
; transition
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| 英文摘要: | Bony fishes are more diverse than any other class of vertebrates. However, we do not have a clear understanding of their history. Determining what led to this diversity will greatly help us understand how life has formed on our planet. It will also allow us to understand how future environmental perturbations might affect this diversity. Transitions to new habitat types, such as from freshwater to marine habitats, or tropical to temperate, may have increased fish diversity. Previous studies have examined the transition of fishes between these habitats and found varying amounts of support for the importance of each transition type. However, these transitions have only been examined in distantly related groups of fishes. This study will be the first to examine the evolutionary transitions between these habitats within a group of relatively closely related fish. These groups contain familiar and economically important species such as largemouth bass and sunfish. Outreach to the public and K-12 students will occur through presentations, social media, and museum displays.
This project will take a novel approach to answer two macro-evolutionary questions: How have diversification rates in the Centrarchiformes varied between (1) tropical and temperate habitats and (2) between freshwater and marine habitats? To answer these questions phylogenetic relationships among Centrarchiform species will be resolved using dense taxonomic sampling and thousands of unlinked nuclear loci. The phylogeny will be fossil calibrated and used in a variety of analyses to test for shifts in the diversification rate and their potential associations with salinity or thermal habitat transitions. Furthermore, this project may provide general insight on the diversification of other aquatic groups that span diverse habitat types. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89896
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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: | |
Prosanta Chakrabarty. DISSERTATION RESEARCH: Phylogenomics and Evolutionary Rates associated with Salinity and Thermal Shifts in Centrarchiformes. 2017-01-01.
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