Hibernation in an Antarctic fish: on ice for winter
Active metabolic suppression in anticipation of winter conditions has been demonstrated in species of mammals, birds, reptiles and amphibians, but not fish. This is because the reduction in metabolic rate in fish is directly proportional to the decrease in water temperature and they appear to be inc...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/11419/ https://nora.nerc.ac.uk/id/eprint/11419/1/journal.pone.0001743.pdf |
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ftnerc:oai:nora.nerc.ac.uk:11419 2023-05-15T13:45:10+02:00 Hibernation in an Antarctic fish: on ice for winter Campbell, Hamish A. Fraser, Keiron P.P. Bishop, Charles M. Peck, Lloyd S. Egginton, Stuart 2008 text http://nora.nerc.ac.uk/id/eprint/11419/ https://nora.nerc.ac.uk/id/eprint/11419/1/journal.pone.0001743.pdf en eng Public Library of Science https://nora.nerc.ac.uk/id/eprint/11419/1/journal.pone.0001743.pdf Campbell, Hamish A.; Fraser, Keiron P.P.; Bishop, Charles M.; Peck, Lloyd S. orcid:0000-0003-3479-6791 Egginton, Stuart. 2008 Hibernation in an Antarctic fish: on ice for winter. PLoS One, 3 (3), e1843. 9, pp. https://doi.org/10.1371/journal.pone.0001743 <https://doi.org/10.1371/journal.pone.0001743> cc_by CC-BY Marine Sciences Zoology Ecology and Environment Publication - Article NonPeerReviewed 2008 ftnerc https://doi.org/10.1371/journal.pone.0001743 2023-02-04T19:27:21Z Active metabolic suppression in anticipation of winter conditions has been demonstrated in species of mammals, birds, reptiles and amphibians, but not fish. This is because the reduction in metabolic rate in fish is directly proportional to the decrease in water temperature and they appear to be incapable of further suppressing their metabolic rate independently of temperature. However, the Antarctic fish (Notothenia coriiceps) is unusual because it undergoes winter metabolic suppression irrespective of water temperature. We assessed the seasonal ecological strategy by monitoring swimming activity, growth, feeding and heart rate (f(H)) in N. coriiceps as they free-ranged within sub-zero waters. The metabolic rate of wild fish was extrapolated from f(H) recordings, from oxygen consumption calibrations established in the laboratory prior to fish release. Throughout the summer months N. coriiceps spent a considerable proportion of its time foraging, resulting in a growth rate (G(w)) of 0.18 +/- 0.2% day(-1). In contrast, during winter much of the time was spent sedentary within a refuge and fish showed a net loss in Gw (-0.05 +/- 0.05% day(-1)). Whilst inactive during winter, N. coriiceps displayed a very low fH, reduced sensory and motor capabilities, and standard metabolic rate was one third lower than in summer. In a similar manner to other hibernating species, dormancy was interrupted with periodic arousals. These arousals, which lasted a few hours, occurred every 4-12 days. During arousal activity, f(H) and metabolism increased to summer levels. This endogenous suppression and activation of metabolic processes, independent of body temperature, demonstrates that N. coriiceps were effectively 'putting themselves on ice' during winter months until food resources improved. This study demonstrates that at least some fish species can enter a dormant state similar to hibernation that is not temperature driven and presumably provides seasonal energetic benefits. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic PLoS ONE 3 3 e1743 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Zoology Ecology and Environment Campbell, Hamish A. Fraser, Keiron P.P. Bishop, Charles M. Peck, Lloyd S. Egginton, Stuart Hibernation in an Antarctic fish: on ice for winter |
topic_facet |
Marine Sciences Zoology Ecology and Environment |
description |
Active metabolic suppression in anticipation of winter conditions has been demonstrated in species of mammals, birds, reptiles and amphibians, but not fish. This is because the reduction in metabolic rate in fish is directly proportional to the decrease in water temperature and they appear to be incapable of further suppressing their metabolic rate independently of temperature. However, the Antarctic fish (Notothenia coriiceps) is unusual because it undergoes winter metabolic suppression irrespective of water temperature. We assessed the seasonal ecological strategy by monitoring swimming activity, growth, feeding and heart rate (f(H)) in N. coriiceps as they free-ranged within sub-zero waters. The metabolic rate of wild fish was extrapolated from f(H) recordings, from oxygen consumption calibrations established in the laboratory prior to fish release. Throughout the summer months N. coriiceps spent a considerable proportion of its time foraging, resulting in a growth rate (G(w)) of 0.18 +/- 0.2% day(-1). In contrast, during winter much of the time was spent sedentary within a refuge and fish showed a net loss in Gw (-0.05 +/- 0.05% day(-1)). Whilst inactive during winter, N. coriiceps displayed a very low fH, reduced sensory and motor capabilities, and standard metabolic rate was one third lower than in summer. In a similar manner to other hibernating species, dormancy was interrupted with periodic arousals. These arousals, which lasted a few hours, occurred every 4-12 days. During arousal activity, f(H) and metabolism increased to summer levels. This endogenous suppression and activation of metabolic processes, independent of body temperature, demonstrates that N. coriiceps were effectively 'putting themselves on ice' during winter months until food resources improved. This study demonstrates that at least some fish species can enter a dormant state similar to hibernation that is not temperature driven and presumably provides seasonal energetic benefits. |
format |
Article in Journal/Newspaper |
author |
Campbell, Hamish A. Fraser, Keiron P.P. Bishop, Charles M. Peck, Lloyd S. Egginton, Stuart |
author_facet |
Campbell, Hamish A. Fraser, Keiron P.P. Bishop, Charles M. Peck, Lloyd S. Egginton, Stuart |
author_sort |
Campbell, Hamish A. |
title |
Hibernation in an Antarctic fish: on ice for winter |
title_short |
Hibernation in an Antarctic fish: on ice for winter |
title_full |
Hibernation in an Antarctic fish: on ice for winter |
title_fullStr |
Hibernation in an Antarctic fish: on ice for winter |
title_full_unstemmed |
Hibernation in an Antarctic fish: on ice for winter |
title_sort |
hibernation in an antarctic fish: on ice for winter |
publisher |
Public Library of Science |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11419/ https://nora.nerc.ac.uk/id/eprint/11419/1/journal.pone.0001743.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11419/1/journal.pone.0001743.pdf Campbell, Hamish A.; Fraser, Keiron P.P.; Bishop, Charles M.; Peck, Lloyd S. orcid:0000-0003-3479-6791 Egginton, Stuart. 2008 Hibernation in an Antarctic fish: on ice for winter. PLoS One, 3 (3), e1843. 9, pp. https://doi.org/10.1371/journal.pone.0001743 <https://doi.org/10.1371/journal.pone.0001743> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0001743 |
container_title |
PLoS ONE |
container_volume |
3 |
container_issue |
3 |
container_start_page |
e1743 |
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1766214548797259776 |