| 项目编号: | 1701913
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| 项目名称: | DISSERTATION RESEARCH: Morphological consequences of trophic evolution |
| 作者: | Brian O'; Meara
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| 承担单位: | University of Tennessee Knoxville
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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: | 19630
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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: | research
; trophic ecology
; diet evolution
; trophic evolution
; macroevolutionary consequence
; resource
; morphological evolution
; comparative evolutionary framework
; biological research
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| 英文摘要: | A unifying characteristic of all life forms is the need to acquire resources. Resources relating to food and feeding, also known as trophic resources, have been a leading factor in driving the diversity of life on this planet. One of every three living vertebrate species is an acanthomorph fish, a group of spiny-ray finned fishes that includes cichlids and many reef fishes. Members of this group consume a wide variety of resources, ranging from scraping scales off other fish, filtering plankton from the water, biting off chunks of coral, or actively hunting other vertebrates. How effectively the fish feed on these resources is intimately connected to their physical anatomy, especially how well the fish can maneuver and capture prey. Some anatomical traits are thought to lead to increased speciation or decreased extinction rates (these are known as key innovations) but may limit possible flexibility in diet evolution. This is the key question addressed by this research. In addition, this research compares how communities of different ages are shaped by their trophic ecologies. Acanthomorphs are also common aquarium fish, providing a great opportunity to educate the public about form and function in biology, which this research will do by producing interactive software.
Understanding the ecological factors that generate and maintain diversity is a major goal in biological research. Trophic ecology is one such factor and is a major driver of evolution. Acanthomorph fishes provide the perfect system to study trophic evolution as they are extremely speciose and diverse in their trophic ecology and morphology. Specifically, this research investigates how trophic ecology may promote or constrain rates of morphological evolution, how morphological key innovations may constrain or promote rates of diet evolution, and how communities of different ages may have different patterns of trophic evolution that have shaped the respective fish fauna. This research will use comparative phylogenetic methods and, for young radiations, phylogenomics, to elucidate relationships of species and test these hypotheses in a comparative evolutionary framework. This research will provide insight into how diet evolves and the macroevolutionary consequences that trophic ecology has on morphology. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89907
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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: | |
Brian O',Meara. DISSERTATION RESEARCH: Morphological consequences of trophic evolution. 2017-01-01.
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