Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts
Wild Atlantic salmon smolts were captured during spring out-migration in the NorthwestMiramichi River, New Brunswick, Canada, and placed on an isotopically distinct hatchery diet to determine the relative contributions of growth and metabolic turnover to isotopic change. As expected for an ectotherm...
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ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/29189 2023-05-15T15:31:32+02:00 Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts D. Jardine, Timothy L. MacLatchy, Deborah L. Fairchild, Wayne A. Cunjak, Richard B. Brown, Scott 2004 http://hdl.handle.net/10072/29189 https://doi.org/10.1023/B:HYDR.0000043182.56244.f6 English en_AU eng Springer Hydrobiologia Oceanography not elsewhere classified Journal article 2004 ftgriffithuniv https://doi.org/10.1023/B:HYDR.0000043182.56244.f6 2018-07-30T10:46:07Z Wild Atlantic salmon smolts were captured during spring out-migration in the NorthwestMiramichi River, New Brunswick, Canada, and placed on an isotopically distinct hatchery diet to determine the relative contributions of growth and metabolic turnover to isotopic change. As expected for an ectothermic species, growth explained a large amount of isotopic variation in changing stable carbon ratios of muscle tissue (average r2 젰.46) for the 3 years of study. Turnover rates of muscle carbon in all 3 years in growing fish (0.24-0.66 month)1) were higher than previously reported values for other ectothermic species, but there was little evidence for isotopic change in non-growers (average r2 젰.041, p>0.1). It is unlikely that nongrowers had consumed any of the hatchery diet over a 2-month period, thus preventing them from acquiring the new carbon isotopic signature. This period of food deprivation resulted in nitrogen-15 enrichment in liver relative to muscle (p 젰.003). It is advised that future isotope studies of metabolic turnover rates in ectotherms be conducted on slow-growing animals over a long time period. This would serve to avoid the obscuring effects of growth on isotopic change, and provide stronger comparisons to endothermic tissue turnover rates. No Full Text Article in Journal/Newspaper Atlantic salmon Salmo salar Griffith University: Griffith Research Online Canada |
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Open Polar |
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Griffith University: Griffith Research Online |
op_collection_id |
ftgriffithuniv |
language |
English |
topic |
Oceanography not elsewhere classified |
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Oceanography not elsewhere classified D. Jardine, Timothy L. MacLatchy, Deborah L. Fairchild, Wayne A. Cunjak, Richard B. Brown, Scott Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
topic_facet |
Oceanography not elsewhere classified |
description |
Wild Atlantic salmon smolts were captured during spring out-migration in the NorthwestMiramichi River, New Brunswick, Canada, and placed on an isotopically distinct hatchery diet to determine the relative contributions of growth and metabolic turnover to isotopic change. As expected for an ectothermic species, growth explained a large amount of isotopic variation in changing stable carbon ratios of muscle tissue (average r2 젰.46) for the 3 years of study. Turnover rates of muscle carbon in all 3 years in growing fish (0.24-0.66 month)1) were higher than previously reported values for other ectothermic species, but there was little evidence for isotopic change in non-growers (average r2 젰.041, p>0.1). It is unlikely that nongrowers had consumed any of the hatchery diet over a 2-month period, thus preventing them from acquiring the new carbon isotopic signature. This period of food deprivation resulted in nitrogen-15 enrichment in liver relative to muscle (p 젰.003). It is advised that future isotope studies of metabolic turnover rates in ectotherms be conducted on slow-growing animals over a long time period. This would serve to avoid the obscuring effects of growth on isotopic change, and provide stronger comparisons to endothermic tissue turnover rates. No Full Text |
format |
Article in Journal/Newspaper |
author |
D. Jardine, Timothy L. MacLatchy, Deborah L. Fairchild, Wayne A. Cunjak, Richard B. Brown, Scott |
author_facet |
D. Jardine, Timothy L. MacLatchy, Deborah L. Fairchild, Wayne A. Cunjak, Richard B. Brown, Scott |
author_sort |
D. Jardine, Timothy |
title |
Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
title_short |
Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
title_full |
Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
title_fullStr |
Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
title_full_unstemmed |
Rapid carbon turnover during growth of Atlantic salmon (Salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
title_sort |
rapid carbon turnover during growth of atlantic salmon (salmo salar) smolts in sea water, and evidence for reduced food consumption by growth-stunts |
publisher |
Springer |
publishDate |
2004 |
url |
http://hdl.handle.net/10072/29189 https://doi.org/10.1023/B:HYDR.0000043182.56244.f6 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Hydrobiologia |
op_doi |
https://doi.org/10.1023/B:HYDR.0000043182.56244.f6 |
_version_ |
1766362052270489600 |