| DOI: | 10.1111/ele.12870
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| Scopus记录号: | 2-s2.0-85034060732
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| 论文题名: | Eco-energetic consequences of evolutionary shifts in body size |
| 作者: | Malerba M.E.; White C.R.; Marshall D.J.
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| 刊名: | Ecology Letters
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| ISSN: | 1461023X
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| EISSN: | 1461-0248
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| 出版年: | 2018
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| 卷: | 21, 期:1 | | 起始页码: | 54
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| 结束页码: | 62
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| 语种: | 英语
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| 英文关键词: | Allometry
; artificial selection
; evolutionary size shift
; experimental evolution
; geometric biology
; metabolism
; net energy flux
; primary production
; scaling
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| Scopus关键词: | Dunaliella tertiolecta
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| 英文摘要: | Size imposes physiological and ecological constraints upon all organisms. Theory abounds on how energy flux covaries with body size, yet causal links are often elusive. As a more direct way to assess the role of size, we used artificial selection to evolve the phytoplankton species Dunaliella tertiolecta towards smaller and larger body sizes. Within 100 generations (c. 1 year), we generated a fourfold difference in cell volume among selected lineages. Large-selected populations produced four times the energy than small-selected populations of equivalent total biovolume, but at the cost of much higher volume-specific respiration. These differences in energy utilisation between large (more productive) and small (more energy-efficient) individuals were used to successfully predict ecological performance (r and K) across novel resource regimes. We show that body size determines the performance of a species by mediating its net energy flux, with worrying implications for current trends in size reduction and for global carbon cycles. © 2017 John Wiley & Sons Ltd/CNRS |
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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/107528
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Centre of Geometric Biology, School of Biological Sciences, Monash University, Melbourne, VIC, Australia
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| Recommended Citation: | |
Malerba M.E.,White C.R.,Marshall D.J.. Eco-energetic consequences of evolutionary shifts in body size[J]. Ecology Letters,2018-01-01,21(1)
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