| 项目编号: | 1600727
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| 项目名称: | DISSERTATION RESEARCH: The functional basis of whole-organism trade-offs between locomotor economy and physical competitive ability |
| 作者: | David Carrier
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| 承担单位: | University of Utah
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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: | 14364
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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: | trade-off
; research
; locomotor economy
; locomotion-competition trade-off
; possible trade-off
; competitive ability
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| 英文摘要: | This study will examine the characteristics of limbs, muscles and physiology of male mice in order to identify the underlying factors leading to a possible trade-off in locomotion versus physical competition. Locomotion and physical competition are critically important activities for most species. However, anatomical and physiological traits that improve performance in either of these behaviors may impair performance in the other. In socially dominant male house mice, those with greater ability to gain and control territories containing females do so at the cost of less efficient locomotion. This trade-off is likely associated with specific anatomical and physiological traits. The results of this study will increase understanding of animal function and conflicting evolutionary pressures. Additionally, this study will be involved in several public engagement projects, including a science lecture series at correctional institutions in Utah, informal science communications events at the Natural History Museum of Utah, and other programs that bring locally-relevant science to Utah residents. This project will also provide research, presentation, and outreach opportunities for undergraduate students.
This research will investigate underlying factors that influence locomotor economy and physical competitive performance by comparing the following traits in dominant versus non-dominant male mice: 1) skeletal proportions and anatomical mechanical advantages, 2) muscle mass distribution of the trunk and limb muscles, and 3) muscle fiber types of the proximal and distal forelimb and hindlimb using antibody-based histochemistry. These data will be combined with previously collected data on competitive ability in semi-natural enclosures and locomotor economy using open-flow respirometry in a fully enclosed treadmill. Together, these data will allow the identification of which traits at what levels of biological organization underlie the locomotion-competition trade-off. Additionally, because traits that confer the greatest advantage during male-male contests are also typically those that are the most sexually dimorphic, the same hypotheses for differences between dominant and non-dominant males will be applied to male-female differences. This research will help to answer long-standing, unanswered questions at the intersection of natural and sexual selection. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/91919
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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: | |
David Carrier. DISSERTATION RESEARCH: The functional basis of whole-organism trade-offs between locomotor economy and physical competitive ability. 2016-01-01.
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