A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts
Lithodid crabs (and other skeleton-crushing predators) may have been excluded from cold Antarctic continental shelf waters for more than 14 Myr. The west Antarctic Peninsula shelf is warming rapidly and has been hypothesized to be soon invaded by lithodids. A remotely operated vehicle survey in Palm...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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ftunivgent:oai:archive.ugent.be:2057915 2023-10-01T03:51:20+02:00 A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts Smith, Craig R Grange, Laura J Honig, David L Naudts, Lieven Huber, Bruce Guidi, Lionel Domack, Eugene 2012 application/pdf https://biblio.ugent.be/publication/2057915 http://hdl.handle.net/1854/LU-2057915 https://doi.org/10.1098/rspb.2011.1496 https://biblio.ugent.be/publication/2057915/file/2057924 eng eng https://biblio.ugent.be/publication/2057915 http://hdl.handle.net/1854/LU-2057915 http://dx.doi.org/10.1098/rspb.2011.1496 https://biblio.ugent.be/publication/2057915/file/2057924 No license (in copyright) info:eu-repo/semantics/restrictedAccess PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES ISSN: 0962-8452 Earth and Environmental Sciences invasion Antarctic lithodids climate warming bioturbation biodiversity loss CLIMATE-CHANGE BELLINGSHAUSEN SEA CRUSTACEA DECAPODA CONTINENTAL-SHELF LITHODID CRABS CIRCULATION ECOSYSTEM ISLANDS BENTHOS SLOPE journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftunivgent https://doi.org/10.1098/rspb.2011.1496 2023-09-06T22:30:12Z Lithodid crabs (and other skeleton-crushing predators) may have been excluded from cold Antarctic continental shelf waters for more than 14 Myr. The west Antarctic Peninsula shelf is warming rapidly and has been hypothesized to be soon invaded by lithodids. A remotely operated vehicle survey in Palmer Deep, a basin 120 km onto the Antarctic shelf, revealed a large, reproductive population of lithodids, providing the first evidence that king crabs have crossed the Antarctic shelf. DNA sequencing and morphology indicate the lithodid is Neolithodes yaldwyni Ahyong & Dawson, previously reported only from Ross Sea waters. We estimate a N yaldwyni population density of 10 600 km(-2) and a population size of 1.55 x 106 in Palmer Deep, a density similar to lithodid populations of commercial interest around Alaska and South Georgia. The lithodid occurred at depths of more than 850 m and temperatures of more than 1.4 degrees C in Palmer Deep, and was not found in extensive surveys of the colder shelf at depths of 430-725 m. Where N yaldwyni occurred, crab traces were abundant, megafaunal diversity reduced and echinoderms absent, suggesting that the crabs have major ecological impacts. Antarctic Peninsula shelf waters are warming at approximately 0.01 degrees C yr(-1); if N yaldwyni is currently limited by cold temperatures, it could spread up onto the shelf (400-600 m depths) within 1-2 decades. The Palmer Deep N yaldwyni population provides an important model for the potential invasive impacts of crushing predators on vulnerable Antarctic shelf ecosystems. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ross Sea Alaska Ghent University Academic Bibliography Antarctic Antarctic Peninsula Bellingshausen Sea Palmer Deep ENVELOPE(-64.400,-64.400,-64.950,-64.950) Ross Sea The Antarctic Proceedings of the Royal Society B: Biological Sciences 279 1730 1017 1026 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences invasion Antarctic lithodids climate warming bioturbation biodiversity loss CLIMATE-CHANGE BELLINGSHAUSEN SEA CRUSTACEA DECAPODA CONTINENTAL-SHELF LITHODID CRABS CIRCULATION ECOSYSTEM ISLANDS BENTHOS SLOPE |
spellingShingle |
Earth and Environmental Sciences invasion Antarctic lithodids climate warming bioturbation biodiversity loss CLIMATE-CHANGE BELLINGSHAUSEN SEA CRUSTACEA DECAPODA CONTINENTAL-SHELF LITHODID CRABS CIRCULATION ECOSYSTEM ISLANDS BENTHOS SLOPE Smith, Craig R Grange, Laura J Honig, David L Naudts, Lieven Huber, Bruce Guidi, Lionel Domack, Eugene A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts |
topic_facet |
Earth and Environmental Sciences invasion Antarctic lithodids climate warming bioturbation biodiversity loss CLIMATE-CHANGE BELLINGSHAUSEN SEA CRUSTACEA DECAPODA CONTINENTAL-SHELF LITHODID CRABS CIRCULATION ECOSYSTEM ISLANDS BENTHOS SLOPE |
description |
Lithodid crabs (and other skeleton-crushing predators) may have been excluded from cold Antarctic continental shelf waters for more than 14 Myr. The west Antarctic Peninsula shelf is warming rapidly and has been hypothesized to be soon invaded by lithodids. A remotely operated vehicle survey in Palmer Deep, a basin 120 km onto the Antarctic shelf, revealed a large, reproductive population of lithodids, providing the first evidence that king crabs have crossed the Antarctic shelf. DNA sequencing and morphology indicate the lithodid is Neolithodes yaldwyni Ahyong & Dawson, previously reported only from Ross Sea waters. We estimate a N yaldwyni population density of 10 600 km(-2) and a population size of 1.55 x 106 in Palmer Deep, a density similar to lithodid populations of commercial interest around Alaska and South Georgia. The lithodid occurred at depths of more than 850 m and temperatures of more than 1.4 degrees C in Palmer Deep, and was not found in extensive surveys of the colder shelf at depths of 430-725 m. Where N yaldwyni occurred, crab traces were abundant, megafaunal diversity reduced and echinoderms absent, suggesting that the crabs have major ecological impacts. Antarctic Peninsula shelf waters are warming at approximately 0.01 degrees C yr(-1); if N yaldwyni is currently limited by cold temperatures, it could spread up onto the shelf (400-600 m depths) within 1-2 decades. The Palmer Deep N yaldwyni population provides an important model for the potential invasive impacts of crushing predators on vulnerable Antarctic shelf ecosystems. |
format |
Article in Journal/Newspaper |
author |
Smith, Craig R Grange, Laura J Honig, David L Naudts, Lieven Huber, Bruce Guidi, Lionel Domack, Eugene |
author_facet |
Smith, Craig R Grange, Laura J Honig, David L Naudts, Lieven Huber, Bruce Guidi, Lionel Domack, Eugene |
author_sort |
Smith, Craig R |
title |
A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts |
title_short |
A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts |
title_full |
A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts |
title_fullStr |
A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts |
title_full_unstemmed |
A large population of king crabs in Palmer Deep on the west Antarctic Peninsula shelf and potential invasive impacts |
title_sort |
large population of king crabs in palmer deep on the west antarctic peninsula shelf and potential invasive impacts |
publishDate |
2012 |
url |
https://biblio.ugent.be/publication/2057915 http://hdl.handle.net/1854/LU-2057915 https://doi.org/10.1098/rspb.2011.1496 https://biblio.ugent.be/publication/2057915/file/2057924 |
long_lat |
ENVELOPE(-64.400,-64.400,-64.950,-64.950) |
geographic |
Antarctic Antarctic Peninsula Bellingshausen Sea Palmer Deep Ross Sea The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Bellingshausen Sea Palmer Deep Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ross Sea Alaska |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ross Sea Alaska |
op_source |
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES ISSN: 0962-8452 |
op_relation |
https://biblio.ugent.be/publication/2057915 http://hdl.handle.net/1854/LU-2057915 http://dx.doi.org/10.1098/rspb.2011.1496 https://biblio.ugent.be/publication/2057915/file/2057924 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1098/rspb.2011.1496 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
279 |
container_issue |
1730 |
container_start_page |
1017 |
op_container_end_page |
1026 |
_version_ |
1778535008173031424 |