Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2000635117 |
Individual differences determine the strength of interactions | |
Griffiths, Jason, I1,2; Childs, Dylan Z.1; Bassar, Ronald D.3; Coulson, Tim4; Reznick, David N.5; Rees, Mark1 | |
2020-07-06 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:29页码:17068-17073 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | Biotic interactions are central to both ecological and evolutionary dynamics. In the vast majority of empirical studies, the strength of intraspecific interactions is estimated by using simple mea-sures of population size. Biologists have long known that these are crude metrics, with experiments and theory suggesting that interactions between individuals should depend on traits, such as body size. Despite this, it has been difficult to estimate the impact of traits on competitive ability from ecological field data, and this explains why the strength of biotic interactions has empirically been treated in a simplistic manner. Using long-term observational data from four different populations, we show that large Trinidadian guppies impose a significantly larger compet-itive pressure on conspecifics than individuals that are smaller; in other words, competition is asymmetric. When we incorporate this asymmetry into integral projection models, the predicted size structure is much closer to what we see in the field compared with models where competition is independent of body size. This dif-ference in size structure translates into a twofold difference in reproductive output. This demonstrates how the nature of ecolog-ical interactions drives the size structure, which, in turn, will have important implications for both the ecological and evolutionary dynamics. |
英文关键词 | size structure asymmetric competition Trinidadian guppies |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000553294300001 |
WOS关键词 | LIFE-HISTORY EVOLUTION ; DENSITY-DEPENDENCE ; INTRASPECIFIC COMPETITION ; ASYMMETRIC COMPETITION ; STRUCTURED POPULATIONS ; SIZE ; COEXISTENCE ; ABUNDANCE ; GUPPIES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/282737 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England; 2.Univ Utah, Dept Math, Salt Lake City, UT 84112 USA; 3.Williams Coll, Dept Biol, Williamstown, MA 01267 USA; 4.Univ Oxford, Dept Zool, Oxford OX1 3PS, England; 5.Univ Calif Riverside, Dept Biol, Riverside, CA 92521 USA |
推荐引用方式 GB/T 7714 | Griffiths, Jason, I,Childs, Dylan Z.,Bassar, Ronald D.,et al. Individual differences determine the strength of interactions[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(29):17068-17073. |
APA | Griffiths, Jason, I,Childs, Dylan Z.,Bassar, Ronald D.,Coulson, Tim,Reznick, David N.,&Rees, Mark.(2020).Individual differences determine the strength of interactions.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(29),17068-17073. |
MLA | Griffiths, Jason, I,et al."Individual differences determine the strength of interactions".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.29(2020):17068-17073. |
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