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Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible?
The fungal pathogen Batrachochytrium dendrobatidis (Bd), which causes the disease chytridiomycosis, has been linked to catastrophic amphibian declines throughout the world. Amphibians differ in their vulnerability to chytridiomycosis; some species experience epizootics followed by collapse while oth...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5645123/ https://www.ncbi.nlm.nih.gov/pubmed/29040327 http://dx.doi.org/10.1371/journal.pone.0186478 |
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author | Catenazzi, Alessandro Swei, Andrea Finkle, Jacob Foreyt, Emily Wyman, Lauren Vredenburg, Vance T. |
author_facet | Catenazzi, Alessandro Swei, Andrea Finkle, Jacob Foreyt, Emily Wyman, Lauren Vredenburg, Vance T. |
author_sort | Catenazzi, Alessandro |
collection | PubMed |
description | The fungal pathogen Batrachochytrium dendrobatidis (Bd), which causes the disease chytridiomycosis, has been linked to catastrophic amphibian declines throughout the world. Amphibians differ in their vulnerability to chytridiomycosis; some species experience epizootics followed by collapse while others exhibit stable host/pathogen dynamics where most amphibian hosts survive in the presence of Bd (e.g., in the enzootic state). Little is known about the factors that drive the transition between the two disease states within a community, or whether populations of species that survived the initial epizootic are stable, yet this information is essential for conservation and theory. Our study focuses on a diverse Peruvian amphibian community that experienced a Bd-caused collapse. We explore host/Bd dynamics of eight surviving species a decade after the mass extinction by using population level disease metrics and Bd-susceptibility trials. We found that three of the eight species continue to be susceptible to Bd, and that their populations are declining. Only one species is growing in numbers and it was non-susceptible in our trials. Our study suggests that some species remain vulnerable to Bd and exhibit ongoing population declines in enzootic systems where Bd-host dynamics are assumed to be stable. |
format | Online Article Text |
id | pubmed-5645123 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-56451232017-10-30 Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? Catenazzi, Alessandro Swei, Andrea Finkle, Jacob Foreyt, Emily Wyman, Lauren Vredenburg, Vance T. PLoS One Research Article The fungal pathogen Batrachochytrium dendrobatidis (Bd), which causes the disease chytridiomycosis, has been linked to catastrophic amphibian declines throughout the world. Amphibians differ in their vulnerability to chytridiomycosis; some species experience epizootics followed by collapse while others exhibit stable host/pathogen dynamics where most amphibian hosts survive in the presence of Bd (e.g., in the enzootic state). Little is known about the factors that drive the transition between the two disease states within a community, or whether populations of species that survived the initial epizootic are stable, yet this information is essential for conservation and theory. Our study focuses on a diverse Peruvian amphibian community that experienced a Bd-caused collapse. We explore host/Bd dynamics of eight surviving species a decade after the mass extinction by using population level disease metrics and Bd-susceptibility trials. We found that three of the eight species continue to be susceptible to Bd, and that their populations are declining. Only one species is growing in numbers and it was non-susceptible in our trials. Our study suggests that some species remain vulnerable to Bd and exhibit ongoing population declines in enzootic systems where Bd-host dynamics are assumed to be stable. Public Library of Science 2017-10-17 /pmc/articles/PMC5645123/ /pubmed/29040327 http://dx.doi.org/10.1371/journal.pone.0186478 Text en © 2017 Catenazzi et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Catenazzi, Alessandro Swei, Andrea Finkle, Jacob Foreyt, Emily Wyman, Lauren Vredenburg, Vance T. Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? |
title | Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? |
title_full | Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? |
title_fullStr | Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? |
title_full_unstemmed | Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? |
title_short | Epizootic to enzootic transition of a fungal disease in tropical Andean frogs: Are surviving species still susceptible? |
title_sort | epizootic to enzootic transition of a fungal disease in tropical andean frogs: are surviving species still susceptible? |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5645123/ https://www.ncbi.nlm.nih.gov/pubmed/29040327 http://dx.doi.org/10.1371/journal.pone.0186478 |
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