Differences in Fungal Disease Dynamics in Co-occurring Terrestrial and Aquatic Amphibians
Differences in Fungal Disease Dynamics in Co-occurring Terrestrial and Aquatic Amphibians
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DOI：
10.1007/s10393-020-01501-z
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发表时间：
2020-09
期刊：
影响因子：
2.5
通讯作者：
Carla M. Sette;V. Vredenburg;Andrew G. Zink
中科院分区：
文献类型：
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作者：
Carla M. Sette;V. Vredenburg;Andrew G. Zink
真菌病原体，Batrachochytrium dendrobatium（Bd），破坏了生物多样性和生态系统健康，并被认为是大规模两栖动物灭绝的驱动因素。这项为期100年的研究调查了哪些环境因素导致了完全陆生物种的Bd流行，并确定了完全陆生两栖动物和更多水生宿主物种之间的感染模式是否不同。我们进行了一项历史调查，以量化从1920年至2000年收集的1127个Batrachoseps gregariusmuseum标本中的Bd患病率，以及16个当代（活捕）B的最新数据。来自美国加州的Sierra内华达州山脉西南坡的gregariuspopulations。我们将这些结果与在整个内华达州山脉收集的10种无尾两栖动物和427种历史Tarichasalamander标本的1395个历史标本和1033个当代标本中的Bd检测率进行了比较。结果表明，在完全陆生的物种中，B. gregarius，在Bd丰度的季节性模式和Bdepizootics的可能时间方面与同一地区的水生物种不同。
The fungal pathogen,Batrachochytrium dendrobatidis(Bd), has devastated biodiversity and ecosystem health and is implicated as a driver of mass amphibian extinctions. This 100-year study investigates which environmental factors contribute toBdprevalence in a fully terrestrial species, and determines whether infection patterns differ between a fully terrestrial amphibian and more aquatic host species. We performed a historical survey to quantifyBdprevalence in 1127Batrachoseps gregariusmuseum specimens collected from 1920 to 2000, and recent data from 16 contemporary (live-caught)B. gregariuspopulations from the southwestern slopes of the Sierra Nevada mountains in California, USA. We compared these results toBddetection rates in 1395 historical and 1033 contemporary specimens from 10 species of anurans and 427 historicalTarichasalamander specimens collected throughout the Sierra Nevada mountains. Our results indicate thatBddynamics in the entirely terrestrial species,B. gregarius, differ from aquatic species in the same region in terms of both seasonal patterns ofBdabundance and in the possible timing ofBdepizootics.