Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1098/rspb.2016.2254 http://hdl.handle.net/11449/220791 |
Resumo: | The recent increase in emerging fungal diseases is causing unprecedented threats to biodiversity. The origin of spread of the frog-killing fungus Batrachochytrium dendrobatidis (Bd) is a matter of continued debate. To date, the historical amphibian declines in Brazil could not be attributed to chytridiomycosis; the high diversity of hosts coupled with the presence of several Bd lineages predating the reported declines raised the hypothesis that a hypervirulent Bd genotype spread from Brazil to other continents causing the recent global amphibian crisis. We tested for a spatio-temporal overlap between Bd and areas of historical amphibian population declines and extinctions in Brazil. A spatio-temporal convergence between Bd and declines would support the hypothesis that Brazilian amphibians were not adapted to Bd prior to the reported declines, thus weakening the hypothesis that Brazil was the global origin of Bd emergence. Alternatively, a lack of spatio-temporal association between Bd and frog declines would indicate an evolution of host resistance in Brazilian frogs predating Bd’s global emergence, further supporting Brazil as the potential origin of the Bd panzootic. Here, we Bd-screened over 30 000 museum-preserved tadpoles collected in Brazil between 1930 and 2015 and overlaid spatio-temporal Bd data with areas of historical amphibian declines. We detected an increase in the proportion of Bd-infected tadpoles during the peak of amphibian declines (1979–1987). We also found that clusters of Bd-positive samples spatiotemporally overlapped with most records of amphibian declines in Brazil’s Atlantic Forest. Our findings indicate that Brazil is post epizootic for chytridiomycosis and provide another piece to the puzzle to explain the origin of Bd globally. |
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Historical amphibian declines and extinctions in Brazil linked to chytridiomycosisBatrachochytrium dendrobatidisDisease distributionHost–pathogen dynamicsSpatial epidemiologySpatio-temporal analysisThe recent increase in emerging fungal diseases is causing unprecedented threats to biodiversity. The origin of spread of the frog-killing fungus Batrachochytrium dendrobatidis (Bd) is a matter of continued debate. To date, the historical amphibian declines in Brazil could not be attributed to chytridiomycosis; the high diversity of hosts coupled with the presence of several Bd lineages predating the reported declines raised the hypothesis that a hypervirulent Bd genotype spread from Brazil to other continents causing the recent global amphibian crisis. We tested for a spatio-temporal overlap between Bd and areas of historical amphibian population declines and extinctions in Brazil. A spatio-temporal convergence between Bd and declines would support the hypothesis that Brazilian amphibians were not adapted to Bd prior to the reported declines, thus weakening the hypothesis that Brazil was the global origin of Bd emergence. Alternatively, a lack of spatio-temporal association between Bd and frog declines would indicate an evolution of host resistance in Brazilian frogs predating Bd’s global emergence, further supporting Brazil as the potential origin of the Bd panzootic. Here, we Bd-screened over 30 000 museum-preserved tadpoles collected in Brazil between 1930 and 2015 and overlaid spatio-temporal Bd data with areas of historical amphibian declines. We detected an increase in the proportion of Bd-infected tadpoles during the peak of amphibian declines (1979–1987). We also found that clusters of Bd-positive samples spatiotemporally overlapped with most records of amphibian declines in Brazil’s Atlantic Forest. Our findings indicate that Brazil is post epizootic for chytridiomycosis and provide another piece to the puzzle to explain the origin of Bd globally.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de CampinasDepartamento de Zoologia Universidade Estadual PaulistaDepartamento de Zoologia Universidade Estadual PaulistaCNPq: 302589/2013-9CNPq: 312895/2014-3CNPq: 405285/2013-2Universidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)Carvalho, TamilieGuilherme Becker, C. [UNESP]Toledo, Luís Felipe2022-04-28T19:05:29Z2022-04-28T19:05:29Z2017-02-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1098/rspb.2016.2254Proceedings of the Royal Society B: Biological Sciences, v. 284, n. 1848, 2017.1471-29540962-8452http://hdl.handle.net/11449/22079110.1098/rspb.2016.22542-s2.0-85012069859Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the Royal Society B: Biological Sciencesinfo:eu-repo/semantics/openAccess2022-04-28T19:05:29Zoai:repositorio.unesp.br:11449/220791Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:05:29Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
title |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
spellingShingle |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis Carvalho, Tamilie Batrachochytrium dendrobatidis Disease distribution Host–pathogen dynamics Spatial epidemiology Spatio-temporal analysis |
title_short |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
title_full |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
title_fullStr |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
title_full_unstemmed |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
title_sort |
Historical amphibian declines and extinctions in Brazil linked to chytridiomycosis |
author |
Carvalho, Tamilie |
author_facet |
Carvalho, Tamilie Guilherme Becker, C. [UNESP] Toledo, Luís Felipe |
author_role |
author |
author2 |
Guilherme Becker, C. [UNESP] Toledo, Luís Felipe |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Carvalho, Tamilie Guilherme Becker, C. [UNESP] Toledo, Luís Felipe |
dc.subject.por.fl_str_mv |
Batrachochytrium dendrobatidis Disease distribution Host–pathogen dynamics Spatial epidemiology Spatio-temporal analysis |
topic |
Batrachochytrium dendrobatidis Disease distribution Host–pathogen dynamics Spatial epidemiology Spatio-temporal analysis |
description |
The recent increase in emerging fungal diseases is causing unprecedented threats to biodiversity. The origin of spread of the frog-killing fungus Batrachochytrium dendrobatidis (Bd) is a matter of continued debate. To date, the historical amphibian declines in Brazil could not be attributed to chytridiomycosis; the high diversity of hosts coupled with the presence of several Bd lineages predating the reported declines raised the hypothesis that a hypervirulent Bd genotype spread from Brazil to other continents causing the recent global amphibian crisis. We tested for a spatio-temporal overlap between Bd and areas of historical amphibian population declines and extinctions in Brazil. A spatio-temporal convergence between Bd and declines would support the hypothesis that Brazilian amphibians were not adapted to Bd prior to the reported declines, thus weakening the hypothesis that Brazil was the global origin of Bd emergence. Alternatively, a lack of spatio-temporal association between Bd and frog declines would indicate an evolution of host resistance in Brazilian frogs predating Bd’s global emergence, further supporting Brazil as the potential origin of the Bd panzootic. Here, we Bd-screened over 30 000 museum-preserved tadpoles collected in Brazil between 1930 and 2015 and overlaid spatio-temporal Bd data with areas of historical amphibian declines. We detected an increase in the proportion of Bd-infected tadpoles during the peak of amphibian declines (1979–1987). We also found that clusters of Bd-positive samples spatiotemporally overlapped with most records of amphibian declines in Brazil’s Atlantic Forest. Our findings indicate that Brazil is post epizootic for chytridiomycosis and provide another piece to the puzzle to explain the origin of Bd globally. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-02-08 2022-04-28T19:05:29Z 2022-04-28T19:05:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1098/rspb.2016.2254 Proceedings of the Royal Society B: Biological Sciences, v. 284, n. 1848, 2017. 1471-2954 0962-8452 http://hdl.handle.net/11449/220791 10.1098/rspb.2016.2254 2-s2.0-85012069859 |
url |
http://dx.doi.org/10.1098/rspb.2016.2254 http://hdl.handle.net/11449/220791 |
identifier_str_mv |
Proceedings of the Royal Society B: Biological Sciences, v. 284, n. 1848, 2017. 1471-2954 0962-8452 10.1098/rspb.2016.2254 2-s2.0-85012069859 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of the Royal Society B: Biological Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965542447054848 |