DOI: 10.1111/ele.12506
Scopus记录号: 2-s2.0-84943662364
论文题名: Effects of host heterogeneity on pathogen diversity and evolution
作者: Fleming-Davies A.E. ; Dukic V. ; Andreasen V. ; Dwyer G.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期: 11 起始页码: 1252
结束页码: 1261
语种: 英语
英文关键词: Coexistence
; Competition
; Evolutionary ecology
; Host heterogeneity
; Host-pathogen interactions
; Tradeoffs
Scopus关键词: coexistence
; competition (ecology)
; evolution
; evolutionary biology
; fitness
; heterogeneity
; host-pathogen interaction
; larva
; moth
; persistence
; phenotypic plasticity
; population modeling
; Lymantria
; Lymantria dispar
英文摘要: Phenotypic variation is common in most pathogens, yet the mechanisms that maintain this diversity are still poorly understood. We asked whether continuous host variation in susceptibility helps maintain phenotypic variation, using experiments conducted with a baculovirus that infects gypsy moth (Lymantria dispar) larvae. We found that an empirically observed tradeoff between mean transmission rate and variation in transmission, which results from host heterogeneity, promotes long-term coexistence of two pathogen types in simulations of a population model. This tradeoff introduces an alternative strategy for the pathogen: a low-transmission, low-variability type can coexist with the high-transmission type favoured by classical non-heterogeneity models. In addition, this tradeoff can help explain the extensive phenotypic variation we observed in field-collected pathogen isolates, in traits affecting virus fitness including transmission and environmental persistence. Similar heterogeneity tradeoffs might be a general mechanism promoting phenotypic variation in any pathogen for which hosts vary continuously in susceptibility. © 2015 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/107847
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ecology and Evolution, University of Chicago, 900 E 57th St, Chicago, IL, United States; Biology Department, Radford University, PO BOX 6931, Radford, VA, United States; Department of Applied Mathematics, University of Colorado, 526 UCB, Boulder, CO, United States; Department of Science, Systems and Models, Roskilde University, Universitetsvej 1, Roskilde, Denmark
Recommended Citation:
Fleming-Davies A.E.,Dukic V.,Andreasen V.,et al. Effects of host heterogeneity on pathogen diversity and evolution[J]. Ecology Letters,2015-01-01,18(11)