Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus
Cold-blooded Antarctic marine species are highly stenothermal and possibly the most temperature-sensitive group on Earth. Studies to date have produced upper lethal temperatures in the range of 4 to 10 degrees C. Although invertebrates have not been acclimated to temperatures above 3 degrees C, some...
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ftnerc:oai:nora.nerc.ac.uk:11582 2023-05-15T13:45:10+02:00 Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus Peck, Lloyd S. Webb, Karen E. Miller, Andrew Clark, Melody S. Hill, Tim 2008 text http://nora.nerc.ac.uk/id/eprint/11582/ https://nora.nerc.ac.uk/id/eprint/11582/1/m358p181.pdf http://www.int-res.com/articles/meps2008/358/m358p181.pdf en eng Inter-Research https://nora.nerc.ac.uk/id/eprint/11582/1/m358p181.pdf Peck, Lloyd S. orcid:0000-0003-3479-6791 Webb, Karen E.; Miller, Andrew; Clark, Melody S. orcid:0000-0002-3442-3824 Hill, Tim. 2008 Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus. Marine Ecology Progress Series, 358. 181-189. https://doi.org/10.3354/meps07336 <https://doi.org/10.3354/meps07336> Marine Sciences Biology and Microbiology Ecology and Environment Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.3354/meps07336 2023-02-04T19:27:25Z Cold-blooded Antarctic marine species are highly stenothermal and possibly the most temperature-sensitive group on Earth. Studies to date have produced upper lethal temperatures in the range of 4 to 10 degrees C. Although invertebrates have not been acclimated to temperatures above 3 degrees C, some Antarctic fish have been acclimated to 4 degrees C. Activity competence has been evaluated in several Antarctic marine invertebrates and shown to be very sensitive to temperature, with 50% failures in the range of 1 to 3 degrees C for clams, limpets and scallops. The starfish Odontaster validus is much more capable of coping with elevated temperatures than any of these species. Turning speed increased with temperature, reaching a maximum at 7.5 degrees C. Temperature increase led to a clear hierarchy of response loss in the starfish, with lethal limits occurring at a higher temperature (15 degrees C) than loss of activity (9 degrees C) and loss of feeding competence (Specific Dynamic Action, or SDA) and coelomic oxygen level collapse both occurring at 6 degrees C. The higher temperature limit for activity than coelomic oxygen level could be explained by body design or taxonomic factors, which may also explain the markedly enhanced ability to cope with elevated temperature over other Antarctic marine species. Long-term acclimation and survival up to 6 degrees C should be possible for this species, which is important for species living on the west coast of the Antarctic Peninsula, possibly the fastest warming marine environment on Earth. The markedly higher resistance to elevated temperature and maintenance of function in a common Antarctic predator compared to the abilities of several of its prey species suggests that a warming environment could have dramatic consequences on the community-level ecological balance for large areas of the Antarctic benthos. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula The Antarctic Marine Ecology Progress Series 358 181 189 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Biology and Microbiology Ecology and Environment |
spellingShingle |
Marine Sciences Biology and Microbiology Ecology and Environment Peck, Lloyd S. Webb, Karen E. Miller, Andrew Clark, Melody S. Hill, Tim Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus |
topic_facet |
Marine Sciences Biology and Microbiology Ecology and Environment |
description |
Cold-blooded Antarctic marine species are highly stenothermal and possibly the most temperature-sensitive group on Earth. Studies to date have produced upper lethal temperatures in the range of 4 to 10 degrees C. Although invertebrates have not been acclimated to temperatures above 3 degrees C, some Antarctic fish have been acclimated to 4 degrees C. Activity competence has been evaluated in several Antarctic marine invertebrates and shown to be very sensitive to temperature, with 50% failures in the range of 1 to 3 degrees C for clams, limpets and scallops. The starfish Odontaster validus is much more capable of coping with elevated temperatures than any of these species. Turning speed increased with temperature, reaching a maximum at 7.5 degrees C. Temperature increase led to a clear hierarchy of response loss in the starfish, with lethal limits occurring at a higher temperature (15 degrees C) than loss of activity (9 degrees C) and loss of feeding competence (Specific Dynamic Action, or SDA) and coelomic oxygen level collapse both occurring at 6 degrees C. The higher temperature limit for activity than coelomic oxygen level could be explained by body design or taxonomic factors, which may also explain the markedly enhanced ability to cope with elevated temperature over other Antarctic marine species. Long-term acclimation and survival up to 6 degrees C should be possible for this species, which is important for species living on the west coast of the Antarctic Peninsula, possibly the fastest warming marine environment on Earth. The markedly higher resistance to elevated temperature and maintenance of function in a common Antarctic predator compared to the abilities of several of its prey species suggests that a warming environment could have dramatic consequences on the community-level ecological balance for large areas of the Antarctic benthos. |
format |
Article in Journal/Newspaper |
author |
Peck, Lloyd S. Webb, Karen E. Miller, Andrew Clark, Melody S. Hill, Tim |
author_facet |
Peck, Lloyd S. Webb, Karen E. Miller, Andrew Clark, Melody S. Hill, Tim |
author_sort |
Peck, Lloyd S. |
title |
Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus |
title_short |
Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus |
title_full |
Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus |
title_fullStr |
Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus |
title_full_unstemmed |
Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus |
title_sort |
temperature limits to activity, feeding and metabolism in the antarctic starfish odontaster validus |
publisher |
Inter-Research |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11582/ https://nora.nerc.ac.uk/id/eprint/11582/1/m358p181.pdf http://www.int-res.com/articles/meps2008/358/m358p181.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11582/1/m358p181.pdf Peck, Lloyd S. orcid:0000-0003-3479-6791 Webb, Karen E.; Miller, Andrew; Clark, Melody S. orcid:0000-0002-3442-3824 Hill, Tim. 2008 Temperature limits to activity, feeding and metabolism in the Antarctic starfish Odontaster validus. Marine Ecology Progress Series, 358. 181-189. https://doi.org/10.3354/meps07336 <https://doi.org/10.3354/meps07336> |
op_doi |
https://doi.org/10.3354/meps07336 |
container_title |
Marine Ecology Progress Series |
container_volume |
358 |
container_start_page |
181 |
op_container_end_page |
189 |
_version_ |
1766214653210263552 |