Climate forcing of an emerging pathogenic fungus across a montane multi-host community.
Climate forcing of an emerging pathogenic fungus across a montane multi-host community.
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DOI：
10.1098/rstb.2015.0454
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发表时间：
2016-12-05
期刊：
影响因子：
--
通讯作者：
Fisher MC
中科院分区：
文献类型：
--
作者：
Clare FC;Halder JB;Daniel O;Bielby J;Semenov MA;Jombart T;Loyau A;Schmeller DS;Cunningham AA;Rowcliffe M;Garner TW;Bosch J;Fisher MC
由于人为的气候变化，预计在未来几十年内将发生季节性时间的变化。虽然预计这将通过环境强迫对传染病的动态产生广泛影响，但缺乏经验数据。在这里，我们调查了季节性，特别是春季冰融的时间，是否影响感染的易感性新兴的病原真菌Batrachochytrium dendrobaestrium（Bd）在整个两栖动物的山地社区正在遭受下降和灭绝，由于这种感染。我们发现了一个强大的时间之间的关联，春季解冻和Bd感染的两个宿主物种，在那里我们表明，春天的早期发病迫使感染的高患病率。第三种高度易感物种（助产士蟾蜍、产科蟾蜍）保持高感染率，与春季解冻时间无关。我们的数据表明，常年越冬的产婆蟾幼虫可能作为一个全年水库的感染与变化的时间，春季解冻确定感染溢出到同域物种的程度。我们使用基于全球气候模型的未来温度预测来证明，到21世纪50年代，该地区春季解冻的时间将显著提前，这表明气候变化将进一步加剧感染的严重程度。我们对多宿主感染动力学的年度变化的影响的研究结果表明，真菌感染性疾病对生物多样性的社区水平的影响将需要重新评估，在面对气候变化。这篇文章是主题问题的一部分“应对新出现的真菌对动物健康，粮食安全和生态系统的威胁”。
Changes in the timings of seasonality as a result of anthropogenic climate change are predicted to occur over the coming decades. While this is expected to have widespread impacts on the dynamics of infectious disease through environmental forcing, empirical data are lacking. Here, we investigated whether seasonality, specifically the timing of spring ice-thaw, affected susceptibility to infection by the emerging pathogenic fungus Batrachochytrium dendrobatidis (Bd) across a montane community of amphibians that are suffering declines and extirpations as a consequence of this infection. We found a robust temporal association between the timing of the spring thaw and Bd infection in two host species, where we show that an early onset of spring forced high prevalences of infection. A third highly susceptible species (the midwife toad, Alytes obstetricans) maintained a high prevalence of infection independent of time of spring thaw. Our data show that perennially overwintering midwife toad larvae may act as a year-round reservoir of infection with variation in time of spring thaw determining the extent to which infection spills over into sympatric species. We used future temperature projections based on global climate models to demonstrate that the timing of spring thaw in this region will advance markedly by the 2050s, indicating that climate change will further force the severity of infection. Our findings on the effect of annual variability on multi-host infection dynamics show that the community-level impact of fungal infectious disease on biodiversity will need to be re-evaluated in the face of climate change. This article is part of the themed issue ‘Tackling emerging fungal threats to animal health, food security and ecosystem resilience’.
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影响因子：
1.1
作者：
Semenov, Mikhail A.;Stratonovitch, Pierre
通讯作者：
Stratonovitch, Pierre
影响因子：
64.8
作者：
Pounds, JA;Bustamante, MR;Young, BE
通讯作者：
Young, BE
影响因子：
4.8
作者：
Rodo, Xavier;Pascual, Mercedes;Dobson, Andrew P.
通讯作者：
Dobson, Andrew P.
影响因子：
11.6
作者：
Garner, Trenton W. J.;Rowcliffe, J. Marcus;Fisher, Matthew C.
通讯作者：
Fisher, Matthew C.
影响因子：
6.3
作者：
Balaz, Vojtech;Voeroes, Judit;Bielby, Jon
通讯作者：
Bielby, Jon