Respiration of the Atlantic Cod
Measurements of routine and standard rates of oxygen consumption of various sized cod at temperatures between 3 and 15 °C revealed a well-marked size effect; small cod consume oxygen at a greater rate per unit weight than do large ones. Increases in temperature raise oxygen consumption in starved an...
Published in: | Journal of the Fisheries Research Board of Canada |
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Language: | English |
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Canadian Science Publishing
1963
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Online Access: | http://dx.doi.org/10.1139/f63-031 http://www.nrcresearchpress.com/doi/pdf/10.1139/f63-031 |
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crcansciencepubl:10.1139/f63-031 2023-12-17T10:27:04+01:00 Respiration of the Atlantic Cod Saunders, Richard L. 1963 http://dx.doi.org/10.1139/f63-031 http://www.nrcresearchpress.com/doi/pdf/10.1139/f63-031 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 20, issue 2, page 373-386 ISSN 0015-296X General Medicine journal-article 1963 crcansciencepubl https://doi.org/10.1139/f63-031 2023-11-19T13:39:21Z Measurements of routine and standard rates of oxygen consumption of various sized cod at temperatures between 3 and 15 °C revealed a well-marked size effect; small cod consume oxygen at a greater rate per unit weight than do large ones. Increases in temperature raise oxygen consumption in starved and fed fish. The increase in rate of oxygen consumption of starved fish between 3 and 10° is proportionately greater than that between 10 and 15 °C. Feeding of cod which have previously been starved increases the rate of oxygen consumption by 40–90%. The rate subsides to the starvation level in 4–7 days depending on temperature and amount of food eaten. Handling cod causes them to increase their rate of oxygen consumption; rates return to normal levels in 3–5 hours. Crowding reduces the rate of oxygen consumption apparently by reducing the space for movement and thus restricting activity. Reducing the ambient oxygen from about 10 to 3 mg/l lowers the rate of oxygen consumption slightly, but the respiratory volume (volume of water pumped over the gills per unit time) is markedly increased. This suggests there is added stress because the increased metabolic cost of irrigating the gills is not met by increased rates of oxygen consumption. Article in Journal/Newspaper atlantic cod Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 20 2 373 386 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Saunders, Richard L. Respiration of the Atlantic Cod |
topic_facet |
General Medicine |
description |
Measurements of routine and standard rates of oxygen consumption of various sized cod at temperatures between 3 and 15 °C revealed a well-marked size effect; small cod consume oxygen at a greater rate per unit weight than do large ones. Increases in temperature raise oxygen consumption in starved and fed fish. The increase in rate of oxygen consumption of starved fish between 3 and 10° is proportionately greater than that between 10 and 15 °C. Feeding of cod which have previously been starved increases the rate of oxygen consumption by 40–90%. The rate subsides to the starvation level in 4–7 days depending on temperature and amount of food eaten. Handling cod causes them to increase their rate of oxygen consumption; rates return to normal levels in 3–5 hours. Crowding reduces the rate of oxygen consumption apparently by reducing the space for movement and thus restricting activity. Reducing the ambient oxygen from about 10 to 3 mg/l lowers the rate of oxygen consumption slightly, but the respiratory volume (volume of water pumped over the gills per unit time) is markedly increased. This suggests there is added stress because the increased metabolic cost of irrigating the gills is not met by increased rates of oxygen consumption. |
format |
Article in Journal/Newspaper |
author |
Saunders, Richard L. |
author_facet |
Saunders, Richard L. |
author_sort |
Saunders, Richard L. |
title |
Respiration of the Atlantic Cod |
title_short |
Respiration of the Atlantic Cod |
title_full |
Respiration of the Atlantic Cod |
title_fullStr |
Respiration of the Atlantic Cod |
title_full_unstemmed |
Respiration of the Atlantic Cod |
title_sort |
respiration of the atlantic cod |
publisher |
Canadian Science Publishing |
publishDate |
1963 |
url |
http://dx.doi.org/10.1139/f63-031 http://www.nrcresearchpress.com/doi/pdf/10.1139/f63-031 |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_source |
Journal of the Fisheries Research Board of Canada volume 20, issue 2, page 373-386 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f63-031 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
20 |
container_issue |
2 |
container_start_page |
373 |
op_container_end_page |
386 |
_version_ |
1785578855133609984 |