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DOI: 10.1371/journal.pone.0145841
论文题名:
Assessing the Threat of Amphibian Chytrid Fungus in the Albertine Rift: Past, Present and Future
作者: Tracie A. Seimon; Samuel Ayebare; Robert Sekisambu; Emmanuel Muhindo; Guillain Mitamba; Eli Greenbaum; Michele Menegon; Fabio Pupin; Denise McAloose; Alyssa Ammazzalorso; Danny Meirte; Wilbur Lukwago; Mathias Behangana; Anton Seimon; Andrew J. Plumptre
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2015
发表日期: 2015-12-28
卷: 10, 期:12
语种: 英语
英文关键词: Amphibians ; Fungal pathogens ; Polymerase chain reaction ; Rain ; Histology ; Sequence alignment ; Climate change ; Uganda
英文摘要: Batrachochytrium dendrobatidis (Bd), the cause of chytridiomycosis, is a pathogenic fungus that is found worldwide and is a major contributor to amphibian declines and extinctions. We report results of a comprehensive effort to assess the distribution and threat of Bd in one of the Earth’s most important biodiversity hotspots, the Albertine Rift in central Africa. In herpetological surveys conducted between 2010 and 2014, 1018 skin swabs from 17 amphibian genera in 39 sites across the Albertine Rift were tested for Bd by PCR. Overall, 19.5% of amphibians tested positive from all sites combined. Skin tissue samples from 163 amphibians were examined histologically; of these two had superficial epidermal intracorneal fungal colonization and lesions consistent with the disease chytridiomycosis. One amphibian was found dead during the surveys, and all others encountered appeared healthy. We found no evidence for Bd-induced mortality events, a finding consistent with other studies. To gain a historical perspective about Bd in the Albertine Rift, skin swabs from 232 museum-archived amphibians collected as voucher specimens from 1925–1994 were tested for Bd. Of these, one sample was positive; an Itombwe River frog (Phrynobatrachus asper) collected in 1950 in the Itombwe highlands. This finding represents the earliest record of Bd in the Democratic Republic of Congo. We modeled the distribution of Bd in the Albertine Rift using MaxEnt software, and trained our model for improved predictability. Our model predicts that Bd is currently widespread across the Albertine Rift, with moderate habitat suitability extending into the lowlands. Under climatic modeling scenarios our model predicts that optimal habitat suitability of Bd will decrease causing a major range contraction of the fungus by 2080. Our baseline data and modeling predictions are important for comparative studies, especially if significant changes in amphibian health status or climactic conditions are encountered in the future.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0145841&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/21725
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: Wildlife Conservation Society, Bronx, NY, United States of America;Wildlife Conservation Society, Bronx, NY, United States of America;Department of Environmental Sciences, Makerere University, Kampala, Uganda;Wildlife Conservation Society, Bronx, NY, United States of America;Wildlife Conservation Society, Bronx, NY, United States of America;Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, United States of America;Tropical Biodiversity Section, MUSE, The Science Museum of Trento, Trento, Italy;Tropical Biodiversity Section, MUSE, The Science Museum of Trento, Trento, Italy;Wildlife Conservation Society, Bronx, NY, United States of America;Wildlife Conservation Society, Bronx, NY, United States of America;Department of African Biology, Royal Museum for Central Africa, Tervuren, Belgium;Department of Environmental Sciences, Makerere University, Kampala, Uganda;Department of Environmental Sciences, Makerere University, Kampala, Uganda;Wildlife Conservation Society, Bronx, NY, United States of America;Wildlife Conservation Society, Bronx, NY, United States of America

Recommended Citation:
Tracie A. Seimon,Samuel Ayebare,Robert Sekisambu,et al. Assessing the Threat of Amphibian Chytrid Fungus in the Albertine Rift: Past, Present and Future[J]. PLOS ONE,2015-01-01,10(12)
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