Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature
Abstract We examined the possible ameliorating effects of reduced salinity (28‰) on the physiological performance of large Atlantic salmon Salmo salar initially reared at 35‰ and exhibiting osmo‐ionoregulatory disturbances in high seasonal water temperatures (>18°C). Considerable differences were...
Published in: | North American Journal of Aquaculture |
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Online Access: | http://dx.doi.org/10.1577/a05-056.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/A05-056.1 |
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crwiley:10.1577/a05-056.1 2024-03-31T07:51:36+00:00 Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature Gonçalves, J. Carraça, S. Damasceno‐Oliveira, A. Fernández‐Durán, B. Diaz, J. Wilson, J. Coimbra, J. 2006 http://dx.doi.org/10.1577/a05-056.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/A05-056.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Aquaculture volume 68, issue 4, page 324-329 ISSN 1522-2055 1548-8454 Aquatic Science journal-article 2006 crwiley https://doi.org/10.1577/a05-056.1 2024-03-04T13:01:21Z Abstract We examined the possible ameliorating effects of reduced salinity (28‰) on the physiological performance of large Atlantic salmon Salmo salar initially reared at 35‰ and exhibiting osmo‐ionoregulatory disturbances in high seasonal water temperatures (>18°C). Considerable differences were observed in the behavior, survival, and plasma values for cortisol, osmolality, and chloride after 3 d, with fish from the 28‰ salinity regime approaching basal levels (cortisol: 8.0 ± 1.7 mmol/L; osmolality: 374.3 ± 6.8 milliosmols per kilogram [mosmols/kg]; [Cl ‐ ]: 170.5 ± 3.8 mmol/L [mean ± SE]) and fish from full‐strength seawater showing a further decrease in osmoregulatory capacity (cortisol: 33.7 ± 5.0 mmol/L; osmolality: 411.4 ± 9.7 mosmols/kg; [Cl ‐ ]: 189.1 ± 6.8 mmol/L). Two weeks later, fish kept at 28‰ still had a normal osmoregulatory capacity and exhibited a significant increase in condition factor, whereas many fish (70%) in full‐strength seawater had died. These results indicate a limited capacity for maintaining osmo‐ionoregulatory homeostasis in full‐strength seawater during long periods at high temperature. Access to water of lower salinity appears to be essential for the survival of Atlantic salmon in this environment. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library North American Journal of Aquaculture 68 4 324 329 |
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Wiley Online Library |
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language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Gonçalves, J. Carraça, S. Damasceno‐Oliveira, A. Fernández‐Durán, B. Diaz, J. Wilson, J. Coimbra, J. Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature |
topic_facet |
Aquatic Science |
description |
Abstract We examined the possible ameliorating effects of reduced salinity (28‰) on the physiological performance of large Atlantic salmon Salmo salar initially reared at 35‰ and exhibiting osmo‐ionoregulatory disturbances in high seasonal water temperatures (>18°C). Considerable differences were observed in the behavior, survival, and plasma values for cortisol, osmolality, and chloride after 3 d, with fish from the 28‰ salinity regime approaching basal levels (cortisol: 8.0 ± 1.7 mmol/L; osmolality: 374.3 ± 6.8 milliosmols per kilogram [mosmols/kg]; [Cl ‐ ]: 170.5 ± 3.8 mmol/L [mean ± SE]) and fish from full‐strength seawater showing a further decrease in osmoregulatory capacity (cortisol: 33.7 ± 5.0 mmol/L; osmolality: 411.4 ± 9.7 mosmols/kg; [Cl ‐ ]: 189.1 ± 6.8 mmol/L). Two weeks later, fish kept at 28‰ still had a normal osmoregulatory capacity and exhibited a significant increase in condition factor, whereas many fish (70%) in full‐strength seawater had died. These results indicate a limited capacity for maintaining osmo‐ionoregulatory homeostasis in full‐strength seawater during long periods at high temperature. Access to water of lower salinity appears to be essential for the survival of Atlantic salmon in this environment. |
format |
Article in Journal/Newspaper |
author |
Gonçalves, J. Carraça, S. Damasceno‐Oliveira, A. Fernández‐Durán, B. Diaz, J. Wilson, J. Coimbra, J. |
author_facet |
Gonçalves, J. Carraça, S. Damasceno‐Oliveira, A. Fernández‐Durán, B. Diaz, J. Wilson, J. Coimbra, J. |
author_sort |
Gonçalves, J. |
title |
Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature |
title_short |
Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature |
title_full |
Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature |
title_fullStr |
Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature |
title_full_unstemmed |
Effect of Reduction in Water Salinity on Osmoregulation and Survival of Large Atlantic Salmon Held at High Water Temperature |
title_sort |
effect of reduction in water salinity on osmoregulation and survival of large atlantic salmon held at high water temperature |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1577/a05-056.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/A05-056.1 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
North American Journal of Aquaculture volume 68, issue 4, page 324-329 ISSN 1522-2055 1548-8454 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1577/a05-056.1 |
container_title |
North American Journal of Aquaculture |
container_volume |
68 |
container_issue |
4 |
container_start_page |
324 |
op_container_end_page |
329 |
_version_ |
1795030284539789312 |