The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod
Apparent specific dynamic action (SDA) amplitude in young juvenile Atlantic cod Gadus morhua (1 to 8 g wet mass), fed a standardized meal and then exercised in a circular swimming respirometer at a constant swimming speed of 0·5 ± 0·3 body lengths s ‐1 , occurred within l h after feeding in all juve...
Published in: | Journal of Fish Biology |
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crwiley:10.1111/j.1095-8649.2002.tb01854.x 2024-06-02T08:03:07+00:00 The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod von Herbing, I. Hunt White, L. 2002 http://dx.doi.org/10.1111/j.1095-8649.2002.tb01854.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb01854.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb01854.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 61, issue 4, page 945-958 ISSN 0022-1112 1095-8649 journal-article 2002 crwiley https://doi.org/10.1111/j.1095-8649.2002.tb01854.x 2024-05-03T11:34:57Z Apparent specific dynamic action (SDA) amplitude in young juvenile Atlantic cod Gadus morhua (1 to 8 g wet mass), fed a standardized meal and then exercised in a circular swimming respirometer at a constant swimming speed of 0·5 ± 0·3 body lengths s ‐1 , occurred within l h after feeding in all juveniles. SDA amplitude were 1·4 to 1·8 times higher in fed fish compared to unfed fish, and rates of oxygen consumption decreased as body mass increased. SDA duration had a tendency to decrease with increasing body mass and was shortest, at 6 h, in the smallest fish (1–1·5 g), but increased to 10–11 h in the largest fish. Apparent SDA in fed fish ( R r ) scaled with a mass exponent of 0·89, while maximum metabolic rate ( R max ) determined by chasing fish to exhaustion and then measuring oxygen consumption for 12 h, and unfed routine metabolic rate (R r ) scaled with a mass exponent of 0·79 and 0·76 respectively. Relative aerobic scope ( R max – unfed R r ) did not appear to vary over the 1 to 8 g increase in wet mass. These results show that as body mass increased in young juvenile Atlantic cod: (1) apparent SDA ( R f ) increased more rapidly than R max , and (2) apparent SDA took up >98% of the relative aerobic scope and that young Atlantic cod allocated most of the energy to growth, and left little for other metabolic activities. Article in Journal/Newspaper atlantic cod Gadus morhua Wiley Online Library Journal of Fish Biology 61 4 945 958 |
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English |
description |
Apparent specific dynamic action (SDA) amplitude in young juvenile Atlantic cod Gadus morhua (1 to 8 g wet mass), fed a standardized meal and then exercised in a circular swimming respirometer at a constant swimming speed of 0·5 ± 0·3 body lengths s ‐1 , occurred within l h after feeding in all juveniles. SDA amplitude were 1·4 to 1·8 times higher in fed fish compared to unfed fish, and rates of oxygen consumption decreased as body mass increased. SDA duration had a tendency to decrease with increasing body mass and was shortest, at 6 h, in the smallest fish (1–1·5 g), but increased to 10–11 h in the largest fish. Apparent SDA in fed fish ( R r ) scaled with a mass exponent of 0·89, while maximum metabolic rate ( R max ) determined by chasing fish to exhaustion and then measuring oxygen consumption for 12 h, and unfed routine metabolic rate (R r ) scaled with a mass exponent of 0·79 and 0·76 respectively. Relative aerobic scope ( R max – unfed R r ) did not appear to vary over the 1 to 8 g increase in wet mass. These results show that as body mass increased in young juvenile Atlantic cod: (1) apparent SDA ( R f ) increased more rapidly than R max , and (2) apparent SDA took up >98% of the relative aerobic scope and that young Atlantic cod allocated most of the energy to growth, and left little for other metabolic activities. |
format |
Article in Journal/Newspaper |
author |
von Herbing, I. Hunt White, L. |
spellingShingle |
von Herbing, I. Hunt White, L. The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod |
author_facet |
von Herbing, I. Hunt White, L. |
author_sort |
von Herbing, I. Hunt |
title |
The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod |
title_short |
The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod |
title_full |
The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod |
title_fullStr |
The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod |
title_full_unstemmed |
The effects of body mass and feeding on metabolic rate in small juvenile Atlantic cod |
title_sort |
effects of body mass and feeding on metabolic rate in small juvenile atlantic cod |
publisher |
Wiley |
publishDate |
2002 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2002.tb01854.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb01854.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb01854.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Journal of Fish Biology volume 61, issue 4, page 945-958 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2002.tb01854.x |
container_title |
Journal of Fish Biology |
container_volume |
61 |
container_issue |
4 |
container_start_page |
945 |
op_container_end_page |
958 |
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1800747595056807936 |