| 项目编号: | 1601830
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| 项目名称: | DISSERTATION RESEARCH: Testing macroevolutionary predictions of diversity and disparity in the ray-finned fishes |
| 作者: | Michael Alfaro
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| 承担单位: | University of California-Los Angeles
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| 批准年: | 2016
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| 开始日期: | 2016-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | 20020
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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: | species
; fish
; uneven diversity
; several key macroevolutionary prediction
; ray-finned fish
; fish body shape
; different fish lineage
; interested researcher
; phenotypic disparity
; vertebrate diversity
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| 英文摘要: | Understanding why some groups of organisms have more species than other groups of organisms is a long-standing goal in evolutionary biology. One proposed explanation for the process that creates this uneven diversity is evolvability, the idea that some lineages that have the intrinsic ability to evolve novel morphologies also have an increased ability to generate new species. Ray-finned fishes, representing half of all vertebrate diversity with 30,000 species, have an astonishingly disparate array of body forms. Fishes are also intensively harvested for human consumption, potentially leading to major impacts on their diversity and their ability to serve both as ecological role players and as a human food source. This project will aim to test the evolvability hypothesis by collecting data on fish body shape using museum collections and crowdsourcing. The researchers will digitize a vast store of biodiversity in museum collections to be made available online, for use by the public and interested researchers.
This project will (1) build the largest phylogeny of vertebrates, with over 12,000 species represented, (2) digitize ichthyology collections at three museums, (3) collect the largest geometric morphometric dataset, consisting of shape data for over 9,000 species of fishes, and (4) reconstruct the disparity among different fish lineages, and how their rates of body shape evolution have changed over time. Several key macroevolutionary predictions can be made based on differential evolvability across clades. More evolvable lineages should have higher richness and diversification rates, and enjoy more phenotypic disparity and rates of phenotypic evolution. Additionally, lineages that enjoy fast phenotypic evolution should also diversify into a larger variety of ecological niches. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/91935
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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: | |
Michael Alfaro. DISSERTATION RESEARCH: Testing macroevolutionary predictions of diversity and disparity in the ray-finned fishes. 2016-01-01.
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