Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.13491 |
Predators weaken prey intraspecific competition through phenotypic selection | |
Siepielski, Adam M.; Hasik, Adam Z.; Ping, Taylor; Serrano, Mabel; Strayhorn, Koby; Tye, Simon P. | |
2020-03-29 | |
发表期刊 | ECOLOGY LETTERS
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ISSN | 1461-023X |
EISSN | 1461-0248 |
出版年 | 2020 |
卷号 | 23期号:6页码:951-961 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Predators have a key role shaping competitor dynamics in food webs. Perhaps the most obvious way this occurs is when predators reduce competitor densities. However, consumption could also generate phenotypic selection on prey that determines the strength of competition, thus coupling consumptive and trait-based effects of predators. In a mesocosm experiment simulating fish predation on damselflies, we found that selection against high damselfly activity rates - a phenotype mediating predation and competition - weakened the strength of density dependence in damselfly growth rates. A field experiment corroborated this finding and showed that increasing damselfly densities in lakes with high fish densities had limited effects on damselfly growth rates but generated a precipitous growth rate decline where fish densities were lower - a pattern expected because of spatial variation in selection imposed by predation. These results suggest that accounting for both consumption and selection is necessary to determine how predators regulate prey competitive interactions. |
英文关键词 | Adaptation competition density dependence eco-evo food web predation selection |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000522047700001 |
WOS关键词 | RISK TRADE-OFF ; BEHAVIORAL-RESPONSES ; SPECIES INTERACTIONS ; FOOD-WEB ; GROWTH ; EVOLUTION ; POPULATION ; MORTALITY ; DYNAMICS ; STRENGTH |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
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/249189 |
专题 | 资源环境科学 |
作者单位 | Univ Arkansas, Dept Biol Sci, Fayetteville, AR 72701 USA |
推荐引用方式 GB/T 7714 | Siepielski, Adam M.,Hasik, Adam Z.,Ping, Taylor,et al. Predators weaken prey intraspecific competition through phenotypic selection[J]. ECOLOGY LETTERS,2020,23(6):951-961. |
APA | Siepielski, Adam M.,Hasik, Adam Z.,Ping, Taylor,Serrano, Mabel,Strayhorn, Koby,&Tye, Simon P..(2020).Predators weaken prey intraspecific competition through phenotypic selection.ECOLOGY LETTERS,23(6),951-961. |
MLA | Siepielski, Adam M.,et al."Predators weaken prey intraspecific competition through phenotypic selection".ECOLOGY LETTERS 23.6(2020):951-961. |
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