气候变化领域集成服务门户(CCPortal): Variable prey development time suppresses predator-prey cycles and enhances stability

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DOI	10.1111/ele.12571
	Variable prey development time suppresses predator-prey cycles and enhances stability
	Cronin J.T.; Reeve J.D.; Xu D.; Xiao M.; Stevens H.N.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:3
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.
英文关键词	Age-structured populations; Developmental variability; Host-parasitoid microcosms; Intraspecific trait variability; Population cycles; Predator-prey stability
学科领域	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
语种	英语
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
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118578
作者单位	Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, United States; Department of Zoology, Southern Illinois University, Carbondale, IL 62901, United States; Department of Mathematics, Southern Illinois University, Carbondale, IL 62901, United States
推荐引用方式 GB/T 7714	Cronin J.T.,Reeve J.D.,Xu D.,et al. Variable prey development time suppresses predator-prey cycles and enhances stability[J],2016,19(3).
APA	Cronin J.T.,Reeve J.D.,Xu D.,Xiao M.,&Stevens H.N..(2016).Variable prey development time suppresses predator-prey cycles and enhances stability.Ecology Letters,19(3).
MLA	Cronin J.T.,et al."Variable prey development time suppresses predator-prey cycles and enhances stability".Ecology Letters 19.3(2016).