Fungal disease cluster in tropical terrestrial frogs predicted by low rainfall
Fungal disease cluster in tropical terrestrial frogs predicted by low rainfall
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低降雨量预测热带陆蛙出现真菌病群
DOI：
10.1016/j.biocon.2021.109246
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发表时间：
2021
影响因子：
5.9
通讯作者：
Becker, Carlos
中科院分区：
文献类型：
--
作者：
Moura, Diego;Greenspan, Sasha;DiRenzo, Graziella;Neely, Wesley;Toledo, Luis;Becker, Carlos
人为的力量正在增加热带森林的气候异常和疾病压力。陆地繁殖的两栖动物，一个多样化的高度地方性的热带青蛙，一直在经历着神秘的人口下降和灭绝，其中大部分已经回顾性地与气候异常和真菌病原菌Batrachochytrium dendrobatim（Bd）。然而，这些物种中Bd感染的时空驱动因素尚未得到解决。我们跟踪微生境条件和Bd动态在陆地繁殖的青蛙在巴西的大西洋森林在一个年度周期，恰逢一段时间的低降雨量相比，历史平均水平。在温暖/潮湿的季节，Bd患病率的增加是由于病原体溢出共同发生的水生养殖青蛙。与历史趋势相比，降雨量的不足是一个月后Bd感染负荷峰值和两个月后重度感染青蛙死亡率的最佳预测因素。我们认为，水文压力可能会加剧季节性病原体扩增直接发展的青蛙，在一定程度上，可能会引发本地化的疾病集群或潜在的疾病动态从地方病到流行病，即使在一个相对较长的历史的主机-病原体共存的地区。
Anthropogenic forces are increasing climate anomalies and disease pressure in tropical forests. Terrestrial-breeding amphibians, a diverse group of highly endemic tropical frogs, have been experiencing cryptic population declines and extinctions, most of which have been retrospectively linked to climate anomalies and the fungal pathogenBatrachochytrium dendrobatidis(Bd). However, the spatiotemporal drivers of Bd infection in these species are unresolved. We tracked microhabitat conditions and Bd dynamics in terrestrial-breeding frogs in Brazil's Atlantic Forest over an annual cycle that coincided with a period of low rainfall compared to historical averages. An increase in Bd prevalence during the warm/wet season was attributable to pathogen spillover from co-occurring aquatic-breeding frogs. The deficit in rainfall compared to historical trends was the best predictor of spikes in Bd infection loads one month later and mortality among heavily infected frogs two months later. We suggest that hydrological stress may intensify seasonal pathogen amplification in direct-developing frogs, to an extent that may trigger localized disease clusters or potentially shift disease dynamics from enzootic to epizootic, even in areas with a relatively long history of host-pathogen coexistence.
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影响因子：
4.6
作者：
Mesquita AFC;Lambertini C;Lyra M;Malagoli LR;James TY;Toledo LF;Haddad CFB;Becker CG
通讯作者：
Becker CG
影响因子：
3.8
作者：
Guilherme Becker, C.;Rodriguez, David;Zamudio, Kelly R.
通讯作者：
Zamudio, Kelly R.
影响因子：
3.7
作者：
Hirschfeld M;Blackburn DC;Doherty-Bone TM;Gonwouo LN;Ghose S;Rödel MO
通讯作者：
Rödel MO
DOI：
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发表时间：
--
期刊：
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影响因子：
--
作者：
通讯作者：
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影响因子：
56.9
作者：
Becker, Carlos Guilherme;Fonseca, Carlos Roberto;Prado, Paulo Inacio
通讯作者：
Prado, Paulo Inacio