DOI: 10.1111/ele.12571
Scopus记录号: 2-s2.0-84955163003
论文题名: Variable prey development time suppresses predator-prey cycles and enhances stability
作者: Cronin J.T. ; Reeve J.D. ; Xu D. ; Xiao M. ; Stevens H.N.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 3 起始页码: 318
结束页码: 327
语种: 英语
英文关键词: Age-structured populations
; Developmental variability
; Host-parasitoid microcosms
; Intraspecific trait variability
; Population cycles
; Predator-prey stability
Scopus关键词: abundance
; age structure
; developmental biology
; developmental stage
; ecological stability
; experimental study
; extinction
; host-parasitoid interaction
; insect
; interspecific variation
; microcosm
; periodicity
; population cycle
; population dynamics
; predator-prey interaction
; prediction
; theoretical study
; vulnerability
; Hexapoda
; animal
; biological model
; female
; food chain
; growth, development and aging
; host parasite interaction
; male
; parasitology
; physiology
; wasp
; weevil
; Animals
; Female
; Food Chain
; Host-Parasite Interactions
; Male
; Models, Biological
; Wasps
; Weevils
英文摘要: Although theoretical models have demonstrated that predator-prey population dynamics can depend critically on age (stage) structure and the duration and variability in development times of different life stages, experimental support for this theory is non-existent. We conducted an experiment with a host-parasitoid system to test the prediction that increased variability in the development time of the vulnerable host stage can promote interaction stability. Host-parasitoid microcosms were subjected to two treatments: Normal and High variance in the duration of the vulnerable host stage. In control and Normal-variance microcosms, hosts and parasitoids exhibited distinct population cycles. In contrast, insect abundances were 18-24% less variable in High- than Normal-variance microcosms. More significantly, periodicity in host-parasitoid population dynamics disappeared in the High-variance microcosms. Simulation models confirmed that stability in High-variance microcosms was sufficient to prevent extinction. We conclude that developmental variability is critical to predator-prey population dynamics and could be exploited in pest-management programs. © 2016 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/107801
Appears in Collections: 气候减缓与适应
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作者单位: Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States; Department of Zoology, Southern Illinois University, Carbondale, IL, United States; Department of Mathematics, Southern Illinois University, Carbondale, IL, United States
Recommended Citation:
Cronin J.T.,Reeve J.D.,Xu D.,et al. Variable prey development time suppresses predator-prey cycles and enhances stability[J]. Ecology Letters,2016-01-01,19(3)