DOI: 10.1111/ele.12616
Scopus记录号: 2-s2.0-84974691423
论文题名: Defensive insect symbiont leads to cascading extinctions and community collapse
作者: Sanders D. ; Kehoe R. ; van Veen F.F. ; McLean A. ; Godfray H.C. ; Dicke M. ; Gols R. ; Frago E.
刊名: Ecology letters
ISSN: 14610248
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 7 起始页码: 789
结束页码: 799
语种: 英语
英文关键词: Acyrthosiphon pisum
; Aphid
; Aphidius ervi
; cascading extinction
; defensive symbiosis
; endosymbiont
; experimental community ecology
; Hamiltonella defensa
; indirect effect
; parasitoid
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107747
Appears in Collections: 气候减缓与适应
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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; Laboratory of Entomology, Wageningen University, P.O. Box 16, Wageningen, 6700AA, The Netherlands
Recommended Citation:
Sanders D.,Kehoe R.,van Veen F.F.,et al. Defensive insect symbiont leads to cascading extinctions and community collapse[J]. Ecology letters,2016-01-01,19(7)