Thermal windows and metabolic performance curves in a developing Antarctic fish
For ectotherms, temperature modifies the rate of physiological function across a temperature tolerance window depending on thermal history, ontogeny, and evolutionary history. Some adult Antarctic fishes, with comparatively narrow thermal windows, exhibit thermal plasticity in standard metabolic rat...
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ftcdlib:oai:escholarship.org:ark:/13030/qt61m004b9 2023-09-05T13:12:35+02:00 Thermal windows and metabolic performance curves in a developing Antarctic fish Flynn, Erin E Todgham, Anne E 271 - 282 2018-03-01 application/pdf https://escholarship.org/uc/item/61m004b9 unknown eScholarship, University of California qt61m004b9 https://escholarship.org/uc/item/61m004b9 public Journal of Comparative Physiology B, vol 188, iss 2 Animals Antarctic Regions Basal Metabolism Embryo Nonmammalian Oxygen Consumption Perciformes Temperature Thermotolerance Metabolism Performance curves Embryos Polar fish Gymnodraco acuticeps Biochemistry and Cell Biology Physiology Zoology article 2018 ftcdlib 2023-08-21T18:03:50Z For ectotherms, temperature modifies the rate of physiological function across a temperature tolerance window depending on thermal history, ontogeny, and evolutionary history. Some adult Antarctic fishes, with comparatively narrow thermal windows, exhibit thermal plasticity in standard metabolic rate; however, little is known about the shape or breadth of thermal performance curves of earlier life stages of Antarctic fishes. We tested the effects of acute warming (- 1 to 8°C) and temperature acclimation (2weeks at - 1, 2, 4°C) on survival and standard metabolic rate in early embryos of the dragonfish Gymnodraco acuticeps from McMurdo Sound, Ross Island, Antarctica. Contrary to predictions, embryos acclimated to warmer temperatures did not experience greater mortality and nearly all embryos survived acute warming to 8°C. Metabolic performance curve height and shape were both significantly altered after 2weeks of development at - 1°C, with further increase in curve height, but not alteration of shape, with warm temperature acclimation. Overall metabolic rate temperature sensitivity (Q 10) from - 1 to 8°C varied from 2.6 to 3.6, with the greatest thermal sensitivity exhibited by embryos at earlier developmental stages. Interclutch variation in metabolic rates, mass, and development of simultaneously collected embryos was also documented. Taken together, metabolic performance curves provide insight into the costs of early development under warming temperatures, with the potential for thermal sensitivity to be modified by dragonfish phenology and magnitude of seasonal changes in temperature. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Sound Ross Island University of California: eScholarship Antarctic McMurdo Sound Ross Island |
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University of California: eScholarship |
op_collection_id |
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language |
unknown |
topic |
Animals Antarctic Regions Basal Metabolism Embryo Nonmammalian Oxygen Consumption Perciformes Temperature Thermotolerance Metabolism Performance curves Embryos Polar fish Gymnodraco acuticeps Biochemistry and Cell Biology Physiology Zoology |
spellingShingle |
Animals Antarctic Regions Basal Metabolism Embryo Nonmammalian Oxygen Consumption Perciformes Temperature Thermotolerance Metabolism Performance curves Embryos Polar fish Gymnodraco acuticeps Biochemistry and Cell Biology Physiology Zoology Flynn, Erin E Todgham, Anne E Thermal windows and metabolic performance curves in a developing Antarctic fish |
topic_facet |
Animals Antarctic Regions Basal Metabolism Embryo Nonmammalian Oxygen Consumption Perciformes Temperature Thermotolerance Metabolism Performance curves Embryos Polar fish Gymnodraco acuticeps Biochemistry and Cell Biology Physiology Zoology |
description |
For ectotherms, temperature modifies the rate of physiological function across a temperature tolerance window depending on thermal history, ontogeny, and evolutionary history. Some adult Antarctic fishes, with comparatively narrow thermal windows, exhibit thermal plasticity in standard metabolic rate; however, little is known about the shape or breadth of thermal performance curves of earlier life stages of Antarctic fishes. We tested the effects of acute warming (- 1 to 8°C) and temperature acclimation (2weeks at - 1, 2, 4°C) on survival and standard metabolic rate in early embryos of the dragonfish Gymnodraco acuticeps from McMurdo Sound, Ross Island, Antarctica. Contrary to predictions, embryos acclimated to warmer temperatures did not experience greater mortality and nearly all embryos survived acute warming to 8°C. Metabolic performance curve height and shape were both significantly altered after 2weeks of development at - 1°C, with further increase in curve height, but not alteration of shape, with warm temperature acclimation. Overall metabolic rate temperature sensitivity (Q 10) from - 1 to 8°C varied from 2.6 to 3.6, with the greatest thermal sensitivity exhibited by embryos at earlier developmental stages. Interclutch variation in metabolic rates, mass, and development of simultaneously collected embryos was also documented. Taken together, metabolic performance curves provide insight into the costs of early development under warming temperatures, with the potential for thermal sensitivity to be modified by dragonfish phenology and magnitude of seasonal changes in temperature. |
format |
Article in Journal/Newspaper |
author |
Flynn, Erin E Todgham, Anne E |
author_facet |
Flynn, Erin E Todgham, Anne E |
author_sort |
Flynn, Erin E |
title |
Thermal windows and metabolic performance curves in a developing Antarctic fish |
title_short |
Thermal windows and metabolic performance curves in a developing Antarctic fish |
title_full |
Thermal windows and metabolic performance curves in a developing Antarctic fish |
title_fullStr |
Thermal windows and metabolic performance curves in a developing Antarctic fish |
title_full_unstemmed |
Thermal windows and metabolic performance curves in a developing Antarctic fish |
title_sort |
thermal windows and metabolic performance curves in a developing antarctic fish |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/61m004b9 |
op_coverage |
271 - 282 |
geographic |
Antarctic McMurdo Sound Ross Island |
geographic_facet |
Antarctic McMurdo Sound Ross Island |
genre |
Antarc* Antarctic Antarctica McMurdo Sound Ross Island |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound Ross Island |
op_source |
Journal of Comparative Physiology B, vol 188, iss 2 |
op_relation |
qt61m004b9 https://escholarship.org/uc/item/61m004b9 |
op_rights |
public |
_version_ |
1776200894608572416 |