Fish welfare based classification method of ocean current speeds at aquaculture sites
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 lacki...
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ftdoajarticles:oai:doaj.org/article:4d56e35d2beb4201b61cccd5b281b614 2023-05-15T15:29:45+02:00 Fish welfare based classification method of ocean current speeds at aquaculture sites Jónsdóttir, KE Hvas, M Alfredsen, JA Føre, M Alver, MO Bjelland, HV Oppedal, F 2019-06-01T00:00:00Z https://doi.org/10.3354/aei00310 https://doaj.org/article/4d56e35d2beb4201b61cccd5b281b614 EN eng Inter-Research https://www.int-res.com/abstracts/aei/v11/p249-261/ https://doaj.org/toc/1869-215X https://doaj.org/toc/1869-7534 1869-215X 1869-7534 doi:10.3354/aei00310 https://doaj.org/article/4d56e35d2beb4201b61cccd5b281b614 Aquaculture Environment Interactions, Vol 11, Pp 249-261 (2019) Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 article 2019 ftdoajarticles https://doi.org/10.3354/aei00310 2022-12-30T21:15:08Z 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. Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Aquaculture Environment Interactions 11 249 261 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 |
spellingShingle |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 Jónsdóttir, KE Hvas, M Alfredsen, JA Føre, M Alver, MO Bjelland, HV Oppedal, F Fish welfare based classification method of ocean current speeds at aquaculture sites |
topic_facet |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Jónsdóttir, KE Hvas, M Alfredsen, JA Føre, M Alver, MO Bjelland, HV Oppedal, F |
author_facet |
Jónsdóttir, KE Hvas, M Alfredsen, JA Føre, M Alver, MO Bjelland, HV Oppedal, F |
author_sort |
Jónsdóttir, KE |
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 |
https://doi.org/10.3354/aei00310 https://doaj.org/article/4d56e35d2beb4201b61cccd5b281b614 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Aquaculture Environment Interactions, Vol 11, Pp 249-261 (2019) |
op_relation |
https://www.int-res.com/abstracts/aei/v11/p249-261/ https://doaj.org/toc/1869-215X https://doaj.org/toc/1869-7534 1869-215X 1869-7534 doi:10.3354/aei00310 https://doaj.org/article/4d56e35d2beb4201b61cccd5b281b614 |
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_ |
1766360185547259904 |