DOI: 10.1111/gcb.12106
论文题名: Climate changes influence free-living stages of soil-transmitted parasites of European rabbits
作者: Hernandez A.D. ; Poole A. ; Cattadori I.M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 4 起始页码: 1028
结束页码: 1042
语种: 英语
英文关键词: Decadal trends
; European rabbit
; Gastro-intestinal helminths
; Seasonality
; Temperature regimes
; Thermal accumulation
Scopus关键词: climate change
; climate effect
; decadal variation
; disease transmission
; global warming
; host-parasite interaction
; parasite
; seasonality
; small mammal
; survival
; temperature effect
; animal
; article
; climate change
; Europe
; parasitology
; rabbit
; season
; soil
; Animals
; Climate Change
; Europe
; Rabbits
; Seasons
; Soil
; Graphidium strigosum
; Oryctolagus cuniculus
; Trichostrongylus
; Trichostrongylus retortaeformis
; Vermes
英文摘要: Climate warming has been suggested to augment the risk of infectious disease outbreaks by extending the seasonal window for parasite growth and by increasing the rate of transmission. Understanding how this occurs in parasite-host systems is important for appreciating long-term and seasonal changes in host exposure to infection and to reduce species extinction caused by diseases. We investigated how free-living stages of two soil-transmitted helminths of the European rabbit (Oryctolagus cuniculus) responded to experimental changes in temperature by performing laboratory experiments with environmental chambers and field manipulations using open-top-chambers. This study was motivated by our previous observations that air temperature has increased over the last 30 years in our field site and that during this period intensity of infection of Graphidium strigosum but not Trichostrongylus retortaeformis was positively associated with this temperature increase. Laboratory and field experiments showed that both parasites accelerated egg development and increased hatching rate and larval survival in response to accumulating thermal energy. Both parasites behaved similarly when exposed to diverse temperature regimes, decadal trends, and monthly fluctuations, however, T. retortaeformis was more successful than G. strigosum by showing higher rates of egg hatching and larval survival. Across the months, the first day of hatching occurred earlier in warmer conditions suggesting that climate warming can lengthen the period of parasite growth and host exposure to infective stages. Also, T. retortaeformis hatched earlier than G. strigosum. These findings showed that seasonal changes in intensity, frequency, and duration of daily temperature are important causes of variability in egg hatching and larva survival. Overall, this study emphasizes the important role of climate warming and seasonality on the dynamics of free-living stages in soil-transmitted helminths and their contribution to enhance host exposure to parasitic infections. Yet, the ability to infect might ultimately depend on how hosts interact with parasites. © 2012 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62477
Appears in Collections: 影响、适应和脆弱性
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作者单位: Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA, 16802, United States
Recommended Citation:
Hernandez A.D.,Poole A.,Cattadori I.M.. Climate changes influence free-living stages of soil-transmitted parasites of European rabbits[J]. Global Change Biology,2013-01-01,19(4)