Heat hardening in Antarctic notothenioid fishes
Many ectotherms rapidly acquire a short-lived increase in heat tolerance following a heat shock. This capacity to heat harden has been noted in a number of temperate fishes, but it is unknown whether it can also be found among the stenothermal Antarctic notothenioid fishes. To investigate, specimens...
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ftmontclairstuni:oai:digitalcommons.montclair.edu:biology-facpubs-1482 2024-09-30T14:22:51+00:00 Heat hardening in Antarctic notothenioid fishes Bilyk, Kevin T. Evans, Clive W. DeVries, Arthur L. 2012-09-01T07:00:00Z https://digitalcommons.montclair.edu/biology-facpubs/483 https://doi.org/10.1007/s00300-012-1189-0 unknown Montclair State University Digital Commons https://digitalcommons.montclair.edu/biology-facpubs/483 doi:10.1007/s00300-012-1189-0 Department of Biology Faculty Scholarship and Creative Works Antarctic fish Antarctica Critical thermal maximum CTMax Heat hardening Heat tolerance text 2012 ftmontclairstuni https://doi.org/10.1007/s00300-012-1189-0 2024-09-12T23:39:01Z Many ectotherms rapidly acquire a short-lived increase in heat tolerance following a heat shock. This capacity to heat harden has been noted in a number of temperate fishes, but it is unknown whether it can also be found among the stenothermal Antarctic notothenioid fishes. To investigate, specimens of six notothenioid species were first brought to their critical thermal maxima (CTMax), and then following a recovery period of 4-24 h, a second CTMax was determined for each species to test for an increase in heat tolerance. All six species showed a significant increase over their initial CTMaxs, providing evidence for the existence of heat hardening in notothenioids. The magnitude of this increase ranged from 0. 6 ± 0. 29 to 1.8 °C ± 0.45, comparable to previously reported values from several temperate fishes and amphibians. This suggests that the heat hardening of Antarctic notothenioids remains undiminished despite their limited heat tolerance and provides further evidence that these fishes retain plasticity in their responses to heat despite their historical residence in a constant cold environment. © 2012 Springer-Verlag. Text Antarc* Antarctic Antarctica Montclair State University Digital Commons Antarctic Polar Biology 35 9 1447 1451 |
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Open Polar |
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Montclair State University Digital Commons |
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ftmontclairstuni |
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unknown |
topic |
Antarctic fish Antarctica Critical thermal maximum CTMax Heat hardening Heat tolerance |
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Antarctic fish Antarctica Critical thermal maximum CTMax Heat hardening Heat tolerance Bilyk, Kevin T. Evans, Clive W. DeVries, Arthur L. Heat hardening in Antarctic notothenioid fishes |
topic_facet |
Antarctic fish Antarctica Critical thermal maximum CTMax Heat hardening Heat tolerance |
description |
Many ectotherms rapidly acquire a short-lived increase in heat tolerance following a heat shock. This capacity to heat harden has been noted in a number of temperate fishes, but it is unknown whether it can also be found among the stenothermal Antarctic notothenioid fishes. To investigate, specimens of six notothenioid species were first brought to their critical thermal maxima (CTMax), and then following a recovery period of 4-24 h, a second CTMax was determined for each species to test for an increase in heat tolerance. All six species showed a significant increase over their initial CTMaxs, providing evidence for the existence of heat hardening in notothenioids. The magnitude of this increase ranged from 0. 6 ± 0. 29 to 1.8 °C ± 0.45, comparable to previously reported values from several temperate fishes and amphibians. This suggests that the heat hardening of Antarctic notothenioids remains undiminished despite their limited heat tolerance and provides further evidence that these fishes retain plasticity in their responses to heat despite their historical residence in a constant cold environment. © 2012 Springer-Verlag. |
format |
Text |
author |
Bilyk, Kevin T. Evans, Clive W. DeVries, Arthur L. |
author_facet |
Bilyk, Kevin T. Evans, Clive W. DeVries, Arthur L. |
author_sort |
Bilyk, Kevin T. |
title |
Heat hardening in Antarctic notothenioid fishes |
title_short |
Heat hardening in Antarctic notothenioid fishes |
title_full |
Heat hardening in Antarctic notothenioid fishes |
title_fullStr |
Heat hardening in Antarctic notothenioid fishes |
title_full_unstemmed |
Heat hardening in Antarctic notothenioid fishes |
title_sort |
heat hardening in antarctic notothenioid fishes |
publisher |
Montclair State University Digital Commons |
publishDate |
2012 |
url |
https://digitalcommons.montclair.edu/biology-facpubs/483 https://doi.org/10.1007/s00300-012-1189-0 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Department of Biology Faculty Scholarship and Creative Works |
op_relation |
https://digitalcommons.montclair.edu/biology-facpubs/483 doi:10.1007/s00300-012-1189-0 |
op_doi |
https://doi.org/10.1007/s00300-012-1189-0 |
container_title |
Polar Biology |
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35 |
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9 |
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1447 |
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1451 |
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1811635757785284608 |