DOI: 10.1111/ele.12925
Scopus记录号: 2-s2.0-85042225447
论文题名: Latitudinal patterns of herbivore pressure in a temperate herb support the biotic interactions hypothesis
作者: Baskett C.A. ; Schemske D.W.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期: 4 起始页码: 578
结束页码: 587
语种: 英语
英文关键词: Biotic interactions hypothesis
; climatic gradient
; evolutionary ecology
; geographic variation
; herbivory
; latitudinal gradient
; Lepidoptera
; plant defence
; plant–insect interactions
; threshold
Scopus关键词: Hexapoda
; Lepidoptera
; Phytolacca americana
英文摘要: The longstanding biotic interactions hypothesis predicts that herbivore pressure declines with latitude, but the evidence is mixed. To address gaps in previous studies, we measured herbivory and defence in the same system, quantified defence with bioassays, and considered effects of leaf age. We quantified herbivory and defence of young and mature leaves along a continental gradient in eastern North America in the native herb Phytolacca americana L. Herbivory in the field declined with latitude and was strongly correlated with lepidopteran abundance. Laboratory bioassays revealed that leaf palatability was positively correlated with latitude of origin. Young leaves were more damaged than mature leaves at lower latitudes in the field, but less palatable in bioassays. Both defence and palatability displayed non-linear latitudinal patterns, suggesting potential mechanisms based on biological or climatic thresholds. In sum, observational and experimental studies find patterns consistent with high herbivore pressure and stronger plant defences at lower latitudes. © 2018 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/107472
Appears in Collections: 气候减缓与适应
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作者单位: Department of Plant Biology and Ecology, Evolutionary Biology, and Behavior Program, Michigan State University, East Lansing, MI, United States
Recommended Citation:
Baskett C.A.,Schemske D.W.. Latitudinal patterns of herbivore pressure in a temperate herb support the biotic interactions hypothesis[J]. Ecology Letters,2018-01-01,21(4)