Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers
Total dissolved gas (TDG) supersaturation downstream of hydropower plants may cause gas bubble disease (GBD) and harmful effects in fish. Little is known about tolerance levels of TDG supersaturation on Atlantic salmon (Salmo salar Linnaeus, 1758) in natural rivers. The present study investigated th...
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ftunivbergen:oai:bora.uib.no:11250/2731554 2023-05-15T15:29:39+02:00 Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers Stenberg, Sondre Kvalsvik Velle, Gaute Pulg, Ulrich Skoglund, Helge 2020 application/pdf https://hdl.handle.net/11250/2731554 https://doi.org/10.1007/s10750-020-04439-z eng eng Springer Norges forskningsråd: 294742 urn:issn:0018-8158 https://hdl.handle.net/11250/2731554 https://doi.org/10.1007/s10750-020-04439-z cristin:1845943 Hydrobiologia, 2020. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s) 2020 Hydrobiologia Journal article Peer reviewed 2020 ftunivbergen https://doi.org/10.1007/s10750-020-04439-z 2023-03-14T17:42:49Z Total dissolved gas (TDG) supersaturation downstream of hydropower plants may cause gas bubble disease (GBD) and harmful effects in fish. Little is known about tolerance levels of TDG supersaturation on Atlantic salmon (Salmo salar Linnaeus, 1758) in natural rivers. The present study investigated the effects of TDG supersaturation on the survival of Atlantic salmon smolts at two field sites in Norway. Here, we kept smolts in cages at increasing distances from hydropower plants known to cause TDG supersaturation and at control sites. We recorded fish mortality and examined for GBD using a stereo microscope. Mortality and symptoms of GBD commenced in fish exposed to an average of 108.3% TDG (maximum 111.0%, water depth 0.55 m) for 2 days. Significant differences in time before mortality at the control sites and test sites commenced at 110.2% TDG (maximum 111.8%) for 3 days. The study indicates that Atlantic salmon may be more vulnerable to TDG supersaturation than Pacific salmonids, which are considered at risk when the TDG is above 110%. In addition, the study provides important data to link effects caused by TDG in the laboratory and in the field. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway Pacific Hydrobiologia 849 2 527 538 |
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Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Total dissolved gas (TDG) supersaturation downstream of hydropower plants may cause gas bubble disease (GBD) and harmful effects in fish. Little is known about tolerance levels of TDG supersaturation on Atlantic salmon (Salmo salar Linnaeus, 1758) in natural rivers. The present study investigated the effects of TDG supersaturation on the survival of Atlantic salmon smolts at two field sites in Norway. Here, we kept smolts in cages at increasing distances from hydropower plants known to cause TDG supersaturation and at control sites. We recorded fish mortality and examined for GBD using a stereo microscope. Mortality and symptoms of GBD commenced in fish exposed to an average of 108.3% TDG (maximum 111.0%, water depth 0.55 m) for 2 days. Significant differences in time before mortality at the control sites and test sites commenced at 110.2% TDG (maximum 111.8%) for 3 days. The study indicates that Atlantic salmon may be more vulnerable to TDG supersaturation than Pacific salmonids, which are considered at risk when the TDG is above 110%. In addition, the study provides important data to link effects caused by TDG in the laboratory and in the field. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Stenberg, Sondre Kvalsvik Velle, Gaute Pulg, Ulrich Skoglund, Helge |
spellingShingle |
Stenberg, Sondre Kvalsvik Velle, Gaute Pulg, Ulrich Skoglund, Helge Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers |
author_facet |
Stenberg, Sondre Kvalsvik Velle, Gaute Pulg, Ulrich Skoglund, Helge |
author_sort |
Stenberg, Sondre Kvalsvik |
title |
Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers |
title_short |
Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers |
title_full |
Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers |
title_fullStr |
Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers |
title_full_unstemmed |
Acute effects of gas supersaturation on Atlantic salmon smolt in two Norwegian rivers |
title_sort |
acute effects of gas supersaturation on atlantic salmon smolt in two norwegian rivers |
publisher |
Springer |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2731554 https://doi.org/10.1007/s10750-020-04439-z |
geographic |
Norway Pacific |
geographic_facet |
Norway Pacific |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Hydrobiologia |
op_relation |
Norges forskningsråd: 294742 urn:issn:0018-8158 https://hdl.handle.net/11250/2731554 https://doi.org/10.1007/s10750-020-04439-z cristin:1845943 Hydrobiologia, 2020. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s) 2020 |
op_doi |
https://doi.org/10.1007/s10750-020-04439-z |
container_title |
Hydrobiologia |
container_volume |
849 |
container_issue |
2 |
container_start_page |
527 |
op_container_end_page |
538 |
_version_ |
1766360088963973120 |