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DOI	10.1111/ele.12616
	Defensive insect symbiont leads to cascading extinctions and community collapse
	Sanders D.; Kehoe R.; van Veen F.F.; McLean A.; Godfray H.C.; Dicke M.; Gols R.; Frago E.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:7
英文摘要	Animals often engage in mutualistic associations with microorganisms that protect them from predation, parasitism or pathogen infection. Studies of these interactions in insects have mostly focussed on the direct effects of symbiont infection on natural enemies without studying community-wide effects. Here, we explore the effect of a defensive symbiont on population dynamics and species extinctions in an experimental community composed of three aphid species and their associated specialist parasitoids. We found that introducing a bacterial symbiont with a protective (but not a non-protective) phenotype into one aphid species led to it being able to escape from its natural enemy and increase in density. This changed the relative density of the three aphid species which resulted in the extinction of the two other parasitoid species. Our results show that defensive symbionts can cause extinction cascades in experimental communities and so may play a significant role in the stability of consumer-herbivore communities in the field. © 2016 The Authors Ecology Letters published by CNRS and John Wiley & Sons Ltd.
英文关键词	Acyrthosiphon pisum; Aphid; Aphidius ervi; cascading extinction; defensive symbiosis; endosymbiont; experimental community ecology; Hamiltonella defensa; indirect effect; parasitoid
学科领域	animal; aphid; ecosystem; Enterobacteriaceae; microbiology; population dynamics; species extinction; symbiosis; wasp; Animals; Aphids; Ecosystem; Enterobacteriaceae; Extinction, Biological; Population Dynamics; Symbiosis; Wasps; Acyrthosiphon pisum; Animalia; Aphididae; Aphidius ervi; Bacteria (microorganisms); Candidatus Hamiltonella defensa; Hexapoda
语种	英语
scopus关键词	animal; aphid; ecosystem; Enterobacteriaceae; microbiology; population dynamics; species extinction; symbiosis; wasp; Animals; Aphids; Ecosystem; Enterobacteriaceae; Extinction, Biological; Population Dynamics; Symbiosis; Wasps; Acyrthosiphon pisum; Animalia; Aphididae; Aphidius ervi; Bacteria (microorganisms); Candidatus Hamiltonella defensa; Hexapoda
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/118528
作者单位	Centre for Ecology & Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, Cornwall, TR10 9FE, UK; Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, UK, United Kingdom; Laboratory of Entomology, Wageningen University, P.O. Box 16, Wageningen, 6700AA, The Netherlands, Netherlands
推荐引用方式 GB/T 7714	Sanders D.,Kehoe R.,van Veen F.F.,et al. Defensive insect symbiont leads to cascading extinctions and community collapse[J],2016,19(7).
APA	Sanders D..,Kehoe R..,van Veen F.F..,McLean A..,Godfray H.C..,...&Frago E..(2016).Defensive insect symbiont leads to cascading extinctions and community collapse.Ecology letters,19(7).
MLA	Sanders D.,et al."Defensive insect symbiont leads to cascading extinctions and community collapse".Ecology letters 19.7(2016).