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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ftnorce:oai:norceresearch.brage.unit.no:11250/2719616 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/11250/2719616 https://doi.org/10.1007/s10750-020-04439-z eng eng Norges forskningsråd: 294742 Hydrobiologia. 2020, . urn:issn:0018-8158 https://hdl.handle.net/11250/2719616 https://doi.org/10.1007/s10750-020-04439-z cristin:1845943 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020, Authors CC-BY Hydrobiologia 12 Peer reviewed Journal article 2020 ftnorce https://doi.org/10.1007/s10750-020-04439-z 2022-10-13T05:50:22Z 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 NORCE vitenarkiv (Norwegian Research Centre) Norway Pacific Hydrobiologia |
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Open Polar |
collection |
NORCE vitenarkiv (Norwegian Research Centre) |
op_collection_id |
ftnorce |
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 |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2719616 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 12 |
op_relation |
Norges forskningsråd: 294742 Hydrobiologia. 2020, . urn:issn:0018-8158 https://hdl.handle.net/11250/2719616 https://doi.org/10.1007/s10750-020-04439-z cristin:1845943 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020, Authors |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10750-020-04439-z |
container_title |
Hydrobiologia |
_version_ |
1766360086699048960 |