Fish welfare based classification method of ocean current speeds at aquaculture sites
ABSTRACT: A major trend in marine aquaculture is to move production to more exposed sites with occasionally rough ocean current events. However, it is unclear whether fish will thrive in these extreme environments, since thorough descriptions of ambient current conditions with regards to fish welfar...
Published in: | Aquaculture Environment Interactions |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2601928 https://doi.org/10.3354/aei00310 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2601928 2023-05-15T15:29:58+02:00 Fish welfare based classification method of ocean current speeds at aquaculture sites Jónsdóttir, Kristbjörg Edda Hvas, Malthe Alfredsen, Jo Arve Føre, Martin Alver, Morten Bjelland, Hans Vanhauwaert Oppedal, Frode 2019 http://hdl.handle.net/11250/2601928 https://doi.org/10.3354/aei00310 eng eng Inter Research Aquaculture Environment Interactions. 2019, 11 249-261. urn:issn:1869-215X http://hdl.handle.net/11250/2601928 http://dx.doi.org/10.3354/aei00310 cristin:1707324 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 249-261 11 Aquaculture Environment Interactions Journal article Peer reviewed 2019 ftntnutrondheimi https://doi.org/10.3354/aei00310 2019-09-17T06:55:07Z ABSTRACT: A major trend in marine aquaculture is to move production to more exposed sites with occasionally rough ocean current events. However, it is unclear whether fish will thrive in these extreme environments, since thorough descriptions of ambient current conditions with regards to fish welfare is lacking. In the present study, ocean current data were collected using acoustic Doppler current profilers at 5 exposed sites along the Norwegian coast over minimum periods of 5 mo. To evaluate welfare risks, current data was compared to known limits of swimming capabilities, such as onset of behavioural changes and critical swimming speeds (Ucrit), of Atlantic salmon Salmo salar and lumpfish Cyclopterus lumpus. Specifically, at each site, current speeds were classified into 6 categories based on expected impact on swimming behaviours of Atlantic salmon, and duration of currents within each category were inspected using a homogeneous and non-homogeneous criterion for the water column. Current speeds were then compared with projected Ucrit at relevant temperatures and fish sizes of Atlantic salmon and lumpfish. Furthermore, a detailed characterization of extreme events at the most exposed site was performed. Of the 5 locations, only 1 exceeded the Ucrit of Atlantic salmon, while all sites featured currents above Ucrit of lumpfish for up to 33 h at a time. These results suggest that responsible Atlantic salmon farming is possible at sites considered exposed, while lumpfish should be restricted to more sheltered environments. The presented method can be applied for other aquaculture fish species if adequate data are available. publishedVersion © The authors 2019. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted. Authors and original publication must be credited. Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Aquaculture Environment Interactions 11 249 261 |
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Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
ABSTRACT: A major trend in marine aquaculture is to move production to more exposed sites with occasionally rough ocean current events. However, it is unclear whether fish will thrive in these extreme environments, since thorough descriptions of ambient current conditions with regards to fish welfare is lacking. In the present study, ocean current data were collected using acoustic Doppler current profilers at 5 exposed sites along the Norwegian coast over minimum periods of 5 mo. To evaluate welfare risks, current data was compared to known limits of swimming capabilities, such as onset of behavioural changes and critical swimming speeds (Ucrit), of Atlantic salmon Salmo salar and lumpfish Cyclopterus lumpus. Specifically, at each site, current speeds were classified into 6 categories based on expected impact on swimming behaviours of Atlantic salmon, and duration of currents within each category were inspected using a homogeneous and non-homogeneous criterion for the water column. Current speeds were then compared with projected Ucrit at relevant temperatures and fish sizes of Atlantic salmon and lumpfish. Furthermore, a detailed characterization of extreme events at the most exposed site was performed. Of the 5 locations, only 1 exceeded the Ucrit of Atlantic salmon, while all sites featured currents above Ucrit of lumpfish for up to 33 h at a time. These results suggest that responsible Atlantic salmon farming is possible at sites considered exposed, while lumpfish should be restricted to more sheltered environments. The presented method can be applied for other aquaculture fish species if adequate data are available. publishedVersion © The authors 2019. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted. Authors and original publication must be credited. |
format |
Article in Journal/Newspaper |
author |
Jónsdóttir, Kristbjörg Edda Hvas, Malthe Alfredsen, Jo Arve Føre, Martin Alver, Morten Bjelland, Hans Vanhauwaert Oppedal, Frode |
spellingShingle |
Jónsdóttir, Kristbjörg Edda Hvas, Malthe Alfredsen, Jo Arve Føre, Martin Alver, Morten Bjelland, Hans Vanhauwaert Oppedal, Frode Fish welfare based classification method of ocean current speeds at aquaculture sites |
author_facet |
Jónsdóttir, Kristbjörg Edda Hvas, Malthe Alfredsen, Jo Arve Føre, Martin Alver, Morten Bjelland, Hans Vanhauwaert Oppedal, Frode |
author_sort |
Jónsdóttir, Kristbjörg Edda |
title |
Fish welfare based classification method of ocean current speeds at aquaculture sites |
title_short |
Fish welfare based classification method of ocean current speeds at aquaculture sites |
title_full |
Fish welfare based classification method of ocean current speeds at aquaculture sites |
title_fullStr |
Fish welfare based classification method of ocean current speeds at aquaculture sites |
title_full_unstemmed |
Fish welfare based classification method of ocean current speeds at aquaculture sites |
title_sort |
fish welfare based classification method of ocean current speeds at aquaculture sites |
publisher |
Inter Research |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2601928 https://doi.org/10.3354/aei00310 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
249-261 11 Aquaculture Environment Interactions |
op_relation |
Aquaculture Environment Interactions. 2019, 11 249-261. urn:issn:1869-215X http://hdl.handle.net/11250/2601928 http://dx.doi.org/10.3354/aei00310 cristin:1707324 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/aei00310 |
container_title |
Aquaculture Environment Interactions |
container_volume |
11 |
container_start_page |
249 |
op_container_end_page |
261 |
_version_ |
1766360420262608896 |