The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar
The present study investigated the effects of transferring freshwater (FW) acclimated S. salar (678 g) that had been maintained under a constant photoperiod and thermal regime, into FW (salinity 0) and salt water (SW; salinity 35) on growth and physiological responses over a 28 day period. There wer...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/jfb.13649 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13649 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13649 |
id |
crwiley:10.1111/jfb.13649 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/jfb.13649 2024-04-14T08:09:18+00:00 The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar Brown, Morgan S. Jones, Paul L. Tromp, Jared J. van Rijn, Christian A. Collins, Robert A. Afonso, Luis O. B. Centre for Integrative Ecology, School of Life and Environmental Sciences, Warrnambool Campus, Deakin University 2018 http://dx.doi.org/10.1111/jfb.13649 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13649 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13649 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 93, issue 3, page 540-549 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2018 crwiley https://doi.org/10.1111/jfb.13649 2024-03-19T11:02:16Z The present study investigated the effects of transferring freshwater (FW) acclimated S. salar (678 g) that had been maintained under a constant photoperiod and thermal regime, into FW (salinity 0) and salt water (SW; salinity 35) on growth and physiological responses over a 28 day period. There were no mortalities observed throughout the study and no significant differences in mass or fork length between FW and SW groups after 28 days. Compared with fish transferred to FW, plasma osmolality and plasma chloride levels increased significantly in fish in SW by day 1. In the SW group, plasma chloride and osmolality had decreased significantly at day 14 when compared with day 1. Na + –K + ‐ATPase activity was significantly higher in SW compared with the FW group from day 7 and thereafter, but continued to increase until day 22. No differences in plasma cortisol and thyroxine were observed between FW and SW groups throughout the study. Plasma glucose significantly increased from day 1 to day 2 in SW but not in the FW group and levels were significantly reduced in SW compared with the FW group at day 28. Plasma cholesterol and triglyceride levels were significantly higher in FW at day 22 and day 14 to day 22, respectively, when compared with the SW group. In the SW group, plasma cholesterol and triglyceride levels did not change significantly throughout the study. The findings of this study suggest that large S. salar retained in FW maintain a high level of SW tolerance in the absence of photoperiod and thermal regimes necessary for smoltification, as demonstrated by 100% survival, unaffected growth performance, increased Na + –K + ‐ATPase activity and a capacity to regulate plasma chloride and osmolality for 28 days in the SW group. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 93 3 540 549 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Brown, Morgan S. Jones, Paul L. Tromp, Jared J. van Rijn, Christian A. Collins, Robert A. Afonso, Luis O. B. The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The present study investigated the effects of transferring freshwater (FW) acclimated S. salar (678 g) that had been maintained under a constant photoperiod and thermal regime, into FW (salinity 0) and salt water (SW; salinity 35) on growth and physiological responses over a 28 day period. There were no mortalities observed throughout the study and no significant differences in mass or fork length between FW and SW groups after 28 days. Compared with fish transferred to FW, plasma osmolality and plasma chloride levels increased significantly in fish in SW by day 1. In the SW group, plasma chloride and osmolality had decreased significantly at day 14 when compared with day 1. Na + –K + ‐ATPase activity was significantly higher in SW compared with the FW group from day 7 and thereafter, but continued to increase until day 22. No differences in plasma cortisol and thyroxine were observed between FW and SW groups throughout the study. Plasma glucose significantly increased from day 1 to day 2 in SW but not in the FW group and levels were significantly reduced in SW compared with the FW group at day 28. Plasma cholesterol and triglyceride levels were significantly higher in FW at day 22 and day 14 to day 22, respectively, when compared with the SW group. In the SW group, plasma cholesterol and triglyceride levels did not change significantly throughout the study. The findings of this study suggest that large S. salar retained in FW maintain a high level of SW tolerance in the absence of photoperiod and thermal regimes necessary for smoltification, as demonstrated by 100% survival, unaffected growth performance, increased Na + –K + ‐ATPase activity and a capacity to regulate plasma chloride and osmolality for 28 days in the SW group. |
author2 |
Centre for Integrative Ecology, School of Life and Environmental Sciences, Warrnambool Campus, Deakin University |
format |
Article in Journal/Newspaper |
author |
Brown, Morgan S. Jones, Paul L. Tromp, Jared J. van Rijn, Christian A. Collins, Robert A. Afonso, Luis O. B. |
author_facet |
Brown, Morgan S. Jones, Paul L. Tromp, Jared J. van Rijn, Christian A. Collins, Robert A. Afonso, Luis O. B. |
author_sort |
Brown, Morgan S. |
title |
The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar |
title_short |
The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar |
title_full |
The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar |
title_fullStr |
The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar |
title_full_unstemmed |
The physiology of saltwater acclimation in large juvenile Atlantic salmon Salmo salar |
title_sort |
physiology of saltwater acclimation in large juvenile atlantic salmon salmo salar |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/jfb.13649 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13649 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13649 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 93, issue 3, page 540-549 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.13649 |
container_title |
Journal of Fish Biology |
container_volume |
93 |
container_issue |
3 |
container_start_page |
540 |
op_container_end_page |
549 |
_version_ |
1796306797952237568 |