| DOI: | 10.1111/ele.12735
|
| Scopus记录号: | 2-s2.0-85013249638
|
| 论文题名: | Predator personality structures prey communities and trophic cascades |
| 作者: | Start D.; Gilbert B.
|
| 刊名: | Ecology Letters
|
| ISSN: | 1461023X
|
| EISSN: | 1461-0248
|
| 出版年: | 2017
|
| 卷: | 20, 期:3 | | 起始页码: | 366
|
| 结束页码: | 374
|
| 语种: | 英语
|
| 英文关键词: | Copepod
; Daphnia
; Epitheca canis
; food web
; intraspecific variation
; predation competition
|
| Scopus关键词: | Animalia
; Anisoptera (dragonflies)
; Copepoda
; Daphnia
; Epitheca canis
; animal
; biota
; copepod
; Daphnia
; food chain
; growth, development and aging
; larva
; microalga
; Odonata
; Ontario
; personality
; physiology
; phytoplankton
; pond
; population density
; predation
; Animals
; Biota
; Copepoda
; Daphnia
; Food Chain
; Larva
; Microalgae
; Odonata
; Ontario
; Personality
; Phytoplankton
; Ponds
; Population Density
; Predatory Behavior
|
| 英文摘要: | Intraspecific variation is central to our understanding of evolution and population ecology, yet its consequences for community ecology are poorly understood. Animal personality – consistent individual differences in suites of behaviours – may be particularly important for trophic dynamics, where predator personality can determine activity rates and patterns of attack. We used mesocosms with aquatic food webs in which the top predator (dragonfly nymphs) varied in activity and subsequent attack rates on zooplankton, and tested the effects of predator personality. We found support for four hypotheses: (1) active predators disproportionately reduce the abundance of prey, (2) active predators select for predator-resistant prey species, (3) active predators strengthen trophic cascades (increase phytoplankton abundance) and (4) active predators are more likely to cannibalise one another, weakening all other trends when at high densities. These results suggest that intraspecific variation in predator personality is an important determinant of prey abundance, community composition and trophic cascades. © 2017 John Wiley & Sons Ltd/CNRS |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/107655
|
| Appears in Collections: | 气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
|
| Recommended Citation: | |
Start D.,Gilbert B.. Predator personality structures prey communities and trophic cascades[J]. Ecology Letters,2017-01-01,20(3)
|
|
|