Scopus记录号: 2-s2.0-85057532263
论文题名: Environmental gradients and the evolution of tri-trophic interactions
作者: Kergunteuil A. ; Röder G. ; Rasmann S.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期: 2 起始页码: 292
结束页码: 301
语种: 英语
英文关键词: Entomopathogenic nematodes
; local adaptation
; plant-mediated interaction
; root herbivore
; tri-trophic interactions
; trophic cascade
; volatile organic compounds
Scopus关键词: Nematoda
英文摘要: Long-standing theory predicts herbivores and predators should drive selection for increased plant defences, such as the specific production of volatile organic compounds for attracting predators near the site of damage. Along elevation gradients, a general pattern is that herbivores and predators are abundant at low elevation and progressively diminish at higher elevations. To determine whether plant adaptation along such a gradient influences top-down control of herbivores, we manipulated soil predatory nematodes, root herbivore pressure and plant ecotypes in a reciprocal transplant experiment. Plant survival was significantly higher for low-elevation plants, but only when in the presence of predatory nematodes. Using olfactometer bioassays, we showed correlated differential nematode attraction and plant ecotype-specific variation in volatile production. This study not only provides an assessment of how elevation gradients modulate the strength of trophic cascades, but also demonstrates how habitat specialisation drives variation in the expression of indirect plant defences. © 2018 John Wiley & Sons Ltd/CNRS 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122747
Appears in Collections: 气候变化事实与影响
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作者单位: Functional Ecology Laboratory, Institute of Biology, University of Neuchâtel, rue Emile Argand 11, Neuchâtel, 2000, Switzerland; Fundamental and Applied Research in Chemical Ecology, Institute of Biology, University of Neuchâtel, rue Emile Argand 11, Neuchâtel, 2000, Switzerland
Recommended Citation:
Kergunteuil A.,Röder G.,Rasmann S.. Environmental gradients and the evolution of tri-trophic interactions[J]. Ecology Letters,2019-01-01,22(2)