A parasite outbreak in notothenioid fish in an Antarctic fjord
Climate changes can promote disease outbreaks, but their nature and potential impacts in remote areas have received little attention. In a hot spot of biodiversity on the West Antarctic Peninsula, which faces among the fastest changing climates on Earth, we captured specimens of two notothenioid fis...
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2022
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Online Access: | https://pure.au.dk/portal/da/publications/a-parasite-outbreak-in-notothenioid-fish-in-an-antarctic-fjord(7a945d48-8872-4f54-a7d2-789218af8846).html https://doi.org/10.1016/j.isci.2022.104588 https://www.sciencedirect.com/science/article/pii/S2589004222008604 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/7a945d48-8872-4f54-a7d2-789218af8846 2023-05-15T13:41:30+02:00 A parasite outbreak in notothenioid fish in an Antarctic fjord Desvignes, Thomas Lauridsen, Henrik Valdivieso, Alejandro Fontenele, Rafaela Kraberger, Simona Murray, Katrina N. Le Francois, Nathalie R. Detrich, H William Kent, Michael L. Varsani, Arvind Postlethwait, John 2022-07 https://pure.au.dk/portal/da/publications/a-parasite-outbreak-in-notothenioid-fish-in-an-antarctic-fjord(7a945d48-8872-4f54-a7d2-789218af8846).html https://doi.org/10.1016/j.isci.2022.104588 https://www.sciencedirect.com/science/article/pii/S2589004222008604 eng eng info:eu-repo/semantics/openAccess Desvignes , T , Lauridsen , H , Valdivieso , A , Fontenele , R , Kraberger , S , Murray , K N , Le Francois , N R , Detrich , H W , Kent , M L , Varsani , A & Postlethwait , J 2022 , ' A parasite outbreak in notothenioid fish in an Antarctic fjord ' , iScience , vol. 25 , no. 7 , 104588 . https://doi.org/10.1016/j.isci.2022.104588 article 2022 ftuniaarhuspubl https://doi.org/10.1016/j.isci.2022.104588 2022-12-21T23:55:44Z Climate changes can promote disease outbreaks, but their nature and potential impacts in remote areas have received little attention. In a hot spot of biodiversity on the West Antarctic Peninsula, which faces among the fastest changing climates on Earth, we captured specimens of two notothenioid fish species affected by large skin tumors at an incidence never before observed in the Southern Ocean. Molecular and histopathological analyses revealed that X-cell parasitic alveolates, members of a genus we call Notoxcellia, are the etiological agent of these tumors. Parasite-specific molecular probes showed that xenomas remained within the skin but largely outgrew host cells in the dermis. We further observed that tumors induced neovascularization in underlying tissue and detrimentally affected host growth and condition. Although many knowledge gaps persist about X-cell disease, including its mode of transmission and life cycle, these findings reveal potentially active biotic threats to vulnerable Antarctic ecosystems. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean Aarhus University: Research Antarctic Antarctic Peninsula Southern Ocean iScience 25 7 104588 |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Climate changes can promote disease outbreaks, but their nature and potential impacts in remote areas have received little attention. In a hot spot of biodiversity on the West Antarctic Peninsula, which faces among the fastest changing climates on Earth, we captured specimens of two notothenioid fish species affected by large skin tumors at an incidence never before observed in the Southern Ocean. Molecular and histopathological analyses revealed that X-cell parasitic alveolates, members of a genus we call Notoxcellia, are the etiological agent of these tumors. Parasite-specific molecular probes showed that xenomas remained within the skin but largely outgrew host cells in the dermis. We further observed that tumors induced neovascularization in underlying tissue and detrimentally affected host growth and condition. Although many knowledge gaps persist about X-cell disease, including its mode of transmission and life cycle, these findings reveal potentially active biotic threats to vulnerable Antarctic ecosystems. |
format |
Article in Journal/Newspaper |
author |
Desvignes, Thomas Lauridsen, Henrik Valdivieso, Alejandro Fontenele, Rafaela Kraberger, Simona Murray, Katrina N. Le Francois, Nathalie R. Detrich, H William Kent, Michael L. Varsani, Arvind Postlethwait, John |
spellingShingle |
Desvignes, Thomas Lauridsen, Henrik Valdivieso, Alejandro Fontenele, Rafaela Kraberger, Simona Murray, Katrina N. Le Francois, Nathalie R. Detrich, H William Kent, Michael L. Varsani, Arvind Postlethwait, John A parasite outbreak in notothenioid fish in an Antarctic fjord |
author_facet |
Desvignes, Thomas Lauridsen, Henrik Valdivieso, Alejandro Fontenele, Rafaela Kraberger, Simona Murray, Katrina N. Le Francois, Nathalie R. Detrich, H William Kent, Michael L. Varsani, Arvind Postlethwait, John |
author_sort |
Desvignes, Thomas |
title |
A parasite outbreak in notothenioid fish in an Antarctic fjord |
title_short |
A parasite outbreak in notothenioid fish in an Antarctic fjord |
title_full |
A parasite outbreak in notothenioid fish in an Antarctic fjord |
title_fullStr |
A parasite outbreak in notothenioid fish in an Antarctic fjord |
title_full_unstemmed |
A parasite outbreak in notothenioid fish in an Antarctic fjord |
title_sort |
parasite outbreak in notothenioid fish in an antarctic fjord |
publishDate |
2022 |
url |
https://pure.au.dk/portal/da/publications/a-parasite-outbreak-in-notothenioid-fish-in-an-antarctic-fjord(7a945d48-8872-4f54-a7d2-789218af8846).html https://doi.org/10.1016/j.isci.2022.104588 https://www.sciencedirect.com/science/article/pii/S2589004222008604 |
geographic |
Antarctic Antarctic Peninsula Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_source |
Desvignes , T , Lauridsen , H , Valdivieso , A , Fontenele , R , Kraberger , S , Murray , K N , Le Francois , N R , Detrich , H W , Kent , M L , Varsani , A & Postlethwait , J 2022 , ' A parasite outbreak in notothenioid fish in an Antarctic fjord ' , iScience , vol. 25 , no. 7 , 104588 . https://doi.org/10.1016/j.isci.2022.104588 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.isci.2022.104588 |
container_title |
iScience |
container_volume |
25 |
container_issue |
7 |
container_start_page |
104588 |
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1766151522856468480 |