Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar)
Atlantic salmon (Salmo salar) were acclimated and exhaustively exercised at 12, 18, or 23°C to determine how temperature influences the magnitude of postexercise physiological disturbances. At each temperature, exercise led to decreased white muscle ATP and phosphocreatine concentrations. Phosphocre...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1997
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Online Access: | http://dx.doi.org/10.1139/f96-305 http://www.nrcresearchpress.com/doi/pdf/10.1139/f96-305 |
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crcansciencepubl:10.1139/f96-305 2023-12-17T10:27:15+01:00 Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) Wilkie, M P Brobbel, M A Davidson, K G Forsyth, L Tufts, B L 1997 http://dx.doi.org/10.1139/f96-305 http://www.nrcresearchpress.com/doi/pdf/10.1139/f96-305 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 54, issue 3, page 503-511 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1997 crcansciencepubl https://doi.org/10.1139/f96-305 2023-11-19T13:39:20Z Atlantic salmon (Salmo salar) were acclimated and exhaustively exercised at 12, 18, or 23°C to determine how temperature influences the magnitude of postexercise physiological disturbances. At each temperature, exercise led to decreased white muscle ATP and phosphocreatine concentrations. Phosphocreatine was rapidly restored within 1 h at each temperature whereas ATP restoration took 1-4 h at 18 and 23°C, but considerably longer at 12°C. Exercise-induced depletions of white muscle glycogen were accompanied by elevations in muscle lactate, which contributed to 0.6 unit decreases in white muscle intracellular pH (pH i ) at each temperature. Compared with rates of recovery in warmer water, glycogen resynthesis, lactate catabolism, and pH i correction were slower at 12°C. White muscle REDOX state estimates suggested that slower postexercise recovery at 12°C was not due to oxygen delivery limitations. Marked postexercise elevations in plasma osmolality and lactate concentration were also observed and in each case correction of the disturbance took longer at 12°C. Paradoxically, significant mortality (30%) was observed only at 23°C. We conclude that while warmer water facilitates postexercise recovery of white muscle metabolic and acid-base status in Atlantic salmon, extremely high temperatures may make them more vulnerable to delayed postexercise mortality. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 54 3 503 511 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Wilkie, M P Brobbel, M A Davidson, K G Forsyth, L Tufts, B L Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Atlantic salmon (Salmo salar) were acclimated and exhaustively exercised at 12, 18, or 23°C to determine how temperature influences the magnitude of postexercise physiological disturbances. At each temperature, exercise led to decreased white muscle ATP and phosphocreatine concentrations. Phosphocreatine was rapidly restored within 1 h at each temperature whereas ATP restoration took 1-4 h at 18 and 23°C, but considerably longer at 12°C. Exercise-induced depletions of white muscle glycogen were accompanied by elevations in muscle lactate, which contributed to 0.6 unit decreases in white muscle intracellular pH (pH i ) at each temperature. Compared with rates of recovery in warmer water, glycogen resynthesis, lactate catabolism, and pH i correction were slower at 12°C. White muscle REDOX state estimates suggested that slower postexercise recovery at 12°C was not due to oxygen delivery limitations. Marked postexercise elevations in plasma osmolality and lactate concentration were also observed and in each case correction of the disturbance took longer at 12°C. Paradoxically, significant mortality (30%) was observed only at 23°C. We conclude that while warmer water facilitates postexercise recovery of white muscle metabolic and acid-base status in Atlantic salmon, extremely high temperatures may make them more vulnerable to delayed postexercise mortality. |
format |
Article in Journal/Newspaper |
author |
Wilkie, M P Brobbel, M A Davidson, K G Forsyth, L Tufts, B L |
author_facet |
Wilkie, M P Brobbel, M A Davidson, K G Forsyth, L Tufts, B L |
author_sort |
Wilkie, M P |
title |
Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) |
title_short |
Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) |
title_full |
Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) |
title_fullStr |
Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) |
title_full_unstemmed |
Influences of temperature upon the postexercise physiology of Atlantic salmon(Salmo salar) |
title_sort |
influences of temperature upon the postexercise physiology of atlantic salmon(salmo salar) |
publisher |
Canadian Science Publishing |
publishDate |
1997 |
url |
http://dx.doi.org/10.1139/f96-305 http://www.nrcresearchpress.com/doi/pdf/10.1139/f96-305 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 54, issue 3, page 503-511 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f96-305 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
54 |
container_issue |
3 |
container_start_page |
503 |
op_container_end_page |
511 |
_version_ |
1785579041549451264 |