| DOI: | 10.1016/j.tree.2017.05.008
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| 论文题名: | Do Performance–Safety Tradeoffs Cause Hypometric Metabolic Scaling in Animals? |
| 作者: | Harrison J.F.
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| 刊名: | Trends in Ecology and Evolution
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| ISSN: | 1695347
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| 出版年: | 2017
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| 卷: | 32, 期:9 | | 起始页码: | 653
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| 结束页码: | 664
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| 语种: | 英语
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| 英文关键词: | allometry
; body size
; metabolic rate
; scaling
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| Scopus关键词: | Animalia
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| 英文摘要: | Hypometric scaling of aerobic metabolism in animals has been widely attributed to constraints on oxygen (O2) supply in larger animals, but recent findings demonstrate that O2 supply balances with need regardless of size. Larger animals also do not exhibit evidence of compensation for O2 supply limitation. Because declining metabolic rates (MRs) are tightly linked to fitness, this provides significant evidence against the hypothesis that constraints on supply drive hypometric scaling. As an alternative, ATP demand might decline in larger animals because of performance–safety tradeoffs. Larger animals, which typically reproduce later, exhibit risk-reducing strategies that lower MR. Conversely, smaller animals are more strongly selected for growth and costly neurolocomotory performance, elevating metabolism. Animal size does not affect limiting O2 levels, based on physiological tests. Larger animals show no evidence of attempting to compensate for O2 supply limits. Smaller animals have more expensive neuromuscular and anabolic systems. Larger animals have characteristics that reduce risk and energy use. Declining mass-specific ATP demand might cause hypometric scaling of MR. © 2017 Elsevier Ltd |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/66887
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| Appears in Collections: | 全球变化的国际研究计划
气候变化与战略
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作者单位: | School of Life Sciences, Arizona State University, Tempe, AZ, United States
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| Recommended Citation: | |
Harrison J.F.. Do Performance–Safety Tradeoffs Cause Hypometric Metabolic Scaling in Animals?[J]. Trends in Ecology and Evolution,2017-01-01,32(9)
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