The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod
The osmolality and ionic composition of the blood of juvenile Atlantic cod Gadus morhua and their response to conditions of reduced temperature and salinity in summer‐ and winter‐acclimated individuals was investigated. Haematocrit percentage was relatively stable throughout the experimental procedu...
Published in: | Journal of Fish Biology |
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crwiley:10.1111/j.0022-1112.2004.00383.x 2024-06-02T08:03:08+00:00 The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod Magill, S. H. Sayer, M. D. J. 2004 http://dx.doi.org/10.1111/j.0022-1112.2004.00383.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2004.00383.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2004.00383.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 64, issue 5, page 1193-1205 ISSN 0022-1112 1095-8649 journal-article 2004 crwiley https://doi.org/10.1111/j.0022-1112.2004.00383.x 2024-05-03T11:29:04Z The osmolality and ionic composition of the blood of juvenile Atlantic cod Gadus morhua and their response to conditions of reduced temperature and salinity in summer‐ and winter‐acclimated individuals was investigated. Haematocrit percentage was relatively stable throughout the experimental procedures. Summer‐acclimated juvenile Atlantic cod had higher plasma osmolality than winter‐acclimated fish in ambient conditions. Plasma Na + levels were, however, higher in winter conditions, while Cl − did not vary between seasons. Temperature reduction (12, 9 and 6° C in summer and to 6 and 4° C in winter) induced a significant response in plasma osmolality and Na + levels in summer, but only in Na + levels in winter‐acclimated fish. A pronounced effect was seen in the summer 6° C treatment. Salinity treatments (24, 16 and 8) had a significant effect on almost all the variables in both summer and winter and resulted generally in dilution of ionic and osmotic concentrations of the plasma. This effect was pronounced in the lowest temperature treatments, with the greatest reduction observed in the summer 6° C treatment. This could suggest that winter‐acclimated fish are physiologically adapted to cope with lower seawater temperatures as opposed to summer‐acclimated fish. Article in Journal/Newspaper atlantic cod Gadus morhua Wiley Online Library Journal of Fish Biology 64 5 1193 1205 |
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Wiley Online Library |
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English |
description |
The osmolality and ionic composition of the blood of juvenile Atlantic cod Gadus morhua and their response to conditions of reduced temperature and salinity in summer‐ and winter‐acclimated individuals was investigated. Haematocrit percentage was relatively stable throughout the experimental procedures. Summer‐acclimated juvenile Atlantic cod had higher plasma osmolality than winter‐acclimated fish in ambient conditions. Plasma Na + levels were, however, higher in winter conditions, while Cl − did not vary between seasons. Temperature reduction (12, 9 and 6° C in summer and to 6 and 4° C in winter) induced a significant response in plasma osmolality and Na + levels in summer, but only in Na + levels in winter‐acclimated fish. A pronounced effect was seen in the summer 6° C treatment. Salinity treatments (24, 16 and 8) had a significant effect on almost all the variables in both summer and winter and resulted generally in dilution of ionic and osmotic concentrations of the plasma. This effect was pronounced in the lowest temperature treatments, with the greatest reduction observed in the summer 6° C treatment. This could suggest that winter‐acclimated fish are physiologically adapted to cope with lower seawater temperatures as opposed to summer‐acclimated fish. |
format |
Article in Journal/Newspaper |
author |
Magill, S. H. Sayer, M. D. J. |
spellingShingle |
Magill, S. H. Sayer, M. D. J. The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod |
author_facet |
Magill, S. H. Sayer, M. D. J. |
author_sort |
Magill, S. H. |
title |
The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod |
title_short |
The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod |
title_full |
The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod |
title_fullStr |
The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod |
title_full_unstemmed |
The effect of reduced temperature and salinity on the blood physiology of juvenile Atlantic cod |
title_sort |
effect of reduced temperature and salinity on the blood physiology of juvenile atlantic cod |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.0022-1112.2004.00383.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2004.00383.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2004.00383.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Journal of Fish Biology volume 64, issue 5, page 1193-1205 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0022-1112.2004.00383.x |
container_title |
Journal of Fish Biology |
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64 |
container_issue |
5 |
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1193 |
op_container_end_page |
1205 |
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1800747598633500672 |