Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star
Over the past decade, unusual mortality outbreaks have decimated echinoderm populations over broad geographic regions, raising awareness globally of the importance of investigating such events. Echinoderms are key components of marine benthos for top-down and bottom-up regulations of plants and anim...
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ftpubmed:oai:pubmedcentral.nih.gov:6063859 2023-05-15T14:07:12+02:00 Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star Núñez-Pons, Laura Work, Thierry M. Angulo-Preckler, Carlos Moles, Juan Avila, Conxita 2018-07-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6063859/ http://www.ncbi.nlm.nih.gov/pubmed/30054527 https://doi.org/10.1038/s41598-018-29684-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6063859/ http://www.ncbi.nlm.nih.gov/pubmed/30054527 http://dx.doi.org/10.1038/s41598-018-29684-0 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41598-018-29684-0 2018-08-05T00:33:55Z Over the past decade, unusual mortality outbreaks have decimated echinoderm populations over broad geographic regions, raising awareness globally of the importance of investigating such events. Echinoderms are key components of marine benthos for top-down and bottom-up regulations of plants and animals; population declines of these individuals can have significant ecosystem-wide effects. Here we describe the first case study of an outbreak affecting Antarctic echinoderms and consisting of an ulcerative epidermal disease affecting ~10% of the population of the keystone asteroid predator Odontaster validus at Deception Island, Antarctica. This event was first detected in the Austral summer 2012–2013, coinciding with unprecedented high seawater temperatures and increased seismicity. Histological analyses revealed epidermal ulceration, inflammation, and necrosis in diseased animals. Bacterial and fungal alpha diversity was consistently lower and of different composition in lesioned versus unaffected tissues (32.87% and 16.94% shared bacterial and fungal operational taxonomic units OTUs respectively). The microbiome of healthy stars was more consistent across individuals than in diseased specimens suggesting microbial dysbiosis, especially in the lesion fronts. Because these microbes were not associated with tissue damage at the microscopic level, their contribution to the development of epidermal lesions remains unclear. Our study reveals that disease events are reaching echinoderms as far as the polar regions thereby highlighting the need to develop a greater understanding of the microbiology and physiology of marine diseases and ecosystems health, especially in the era of global warming. Text Antarc* Antarctic Antarctica Deception Island PubMed Central (PMC) Antarctic Austral Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) Scientific Reports 8 1 |
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Article Núñez-Pons, Laura Work, Thierry M. Angulo-Preckler, Carlos Moles, Juan Avila, Conxita Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star |
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Over the past decade, unusual mortality outbreaks have decimated echinoderm populations over broad geographic regions, raising awareness globally of the importance of investigating such events. Echinoderms are key components of marine benthos for top-down and bottom-up regulations of plants and animals; population declines of these individuals can have significant ecosystem-wide effects. Here we describe the first case study of an outbreak affecting Antarctic echinoderms and consisting of an ulcerative epidermal disease affecting ~10% of the population of the keystone asteroid predator Odontaster validus at Deception Island, Antarctica. This event was first detected in the Austral summer 2012–2013, coinciding with unprecedented high seawater temperatures and increased seismicity. Histological analyses revealed epidermal ulceration, inflammation, and necrosis in diseased animals. Bacterial and fungal alpha diversity was consistently lower and of different composition in lesioned versus unaffected tissues (32.87% and 16.94% shared bacterial and fungal operational taxonomic units OTUs respectively). The microbiome of healthy stars was more consistent across individuals than in diseased specimens suggesting microbial dysbiosis, especially in the lesion fronts. Because these microbes were not associated with tissue damage at the microscopic level, their contribution to the development of epidermal lesions remains unclear. Our study reveals that disease events are reaching echinoderms as far as the polar regions thereby highlighting the need to develop a greater understanding of the microbiology and physiology of marine diseases and ecosystems health, especially in the era of global warming. |
format |
Text |
author |
Núñez-Pons, Laura Work, Thierry M. Angulo-Preckler, Carlos Moles, Juan Avila, Conxita |
author_facet |
Núñez-Pons, Laura Work, Thierry M. Angulo-Preckler, Carlos Moles, Juan Avila, Conxita |
author_sort |
Núñez-Pons, Laura |
title |
Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star |
title_short |
Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star |
title_full |
Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star |
title_fullStr |
Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star |
title_full_unstemmed |
Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star |
title_sort |
exploring the pathology of an epidermal disease affecting a circum-antarctic sea star |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6063859/ http://www.ncbi.nlm.nih.gov/pubmed/30054527 https://doi.org/10.1038/s41598-018-29684-0 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Antarctic Austral Deception Island |
geographic_facet |
Antarctic Austral Deception Island |
genre |
Antarc* Antarctic Antarctica Deception Island |
genre_facet |
Antarc* Antarctic Antarctica Deception Island |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6063859/ http://www.ncbi.nlm.nih.gov/pubmed/30054527 http://dx.doi.org/10.1038/s41598-018-29684-0 |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-018-29684-0 |
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Scientific Reports |
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