Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts
Migration behaviour and estuarine mortality of cultivated Atlantic salmon Salmo salar smolts in a 16 km long estuary were studied using two methods: (1) acoustic telemetry and (2) group tagging in combination with trap nets. Progression rates of surviving individuals through the estuary were relativ...
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crwiley:10.1111/jfb.13097 2023-12-03T10:19:42+01:00 Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts Vollset, K. W. Mahlum, S. Davidsen, J. G. Skoglund, H. Barlaup, B. T. Norwegian Seafood Research Fund Norwegian Environment Agency 2016 http://dx.doi.org/10.1111/jfb.13097 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13097 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13097 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 89, issue 4, page 1974-1990 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2016 crwiley https://doi.org/10.1111/jfb.13097 2023-11-09T14:24:26Z Migration behaviour and estuarine mortality of cultivated Atlantic salmon Salmo salar smolts in a 16 km long estuary were studied using two methods: (1) acoustic telemetry and (2) group tagging in combination with trap nets. Progression rates of surviving individuals through the estuary were relatively slow using both methods [0·38 L T (total length) s −1 v . 0·25 L T s −1 ]. In 2012, the progression rate was slow from the river to the estuary (0·55 L T s −1 ) and the first part of the estuary (0·31 L T s −1 ), but increased thereafter (1·45–2·21 L T s −1 ). In 2013, the progression rate was fast from the river to the estuary (4·31 L T s −1 ) but was slower thereafter (0·18–0·91 L T s −1 ). Survival to the fjord was higher in 2012 (47%) compared to 2013 (6%). Fast moving individuals were more likely to migrate successfully through the estuary compared to slower moving individuals. Adult recapture of coded‐wire‐tagged S. salar was generally low (0·00–0·04%). Mortality hot spots were related to topographically distinct areas such as the river outlet (in 2012) or the sill separating the estuary and the fjord (in 2013). At the sill, an aggregation of cod Gadus morhua predating on cultivated smolts was identified. The results indicate that slow progression rates through the estuary decreases the likelihood of smolts being detected outside the estuary. The highly stochastic and site‐specific mortality patterns observed in this study highlight the complexity in extrapolating mortality patterns of single release groups to the entire smolt run of wild S. salar . Article in Journal/Newspaper Atlantic salmon Gadus morhua Salmo salar Wiley Online Library (via Crossref) Almo ENVELOPE(15.306,15.306,66.954,66.954) Journal of Fish Biology 89 4 1974 1990 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Vollset, K. W. Mahlum, S. Davidsen, J. G. Skoglund, H. Barlaup, B. T. Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Migration behaviour and estuarine mortality of cultivated Atlantic salmon Salmo salar smolts in a 16 km long estuary were studied using two methods: (1) acoustic telemetry and (2) group tagging in combination with trap nets. Progression rates of surviving individuals through the estuary were relatively slow using both methods [0·38 L T (total length) s −1 v . 0·25 L T s −1 ]. In 2012, the progression rate was slow from the river to the estuary (0·55 L T s −1 ) and the first part of the estuary (0·31 L T s −1 ), but increased thereafter (1·45–2·21 L T s −1 ). In 2013, the progression rate was fast from the river to the estuary (4·31 L T s −1 ) but was slower thereafter (0·18–0·91 L T s −1 ). Survival to the fjord was higher in 2012 (47%) compared to 2013 (6%). Fast moving individuals were more likely to migrate successfully through the estuary compared to slower moving individuals. Adult recapture of coded‐wire‐tagged S. salar was generally low (0·00–0·04%). Mortality hot spots were related to topographically distinct areas such as the river outlet (in 2012) or the sill separating the estuary and the fjord (in 2013). At the sill, an aggregation of cod Gadus morhua predating on cultivated smolts was identified. The results indicate that slow progression rates through the estuary decreases the likelihood of smolts being detected outside the estuary. The highly stochastic and site‐specific mortality patterns observed in this study highlight the complexity in extrapolating mortality patterns of single release groups to the entire smolt run of wild S. salar . |
author2 |
Norwegian Seafood Research Fund Norwegian Environment Agency |
format |
Article in Journal/Newspaper |
author |
Vollset, K. W. Mahlum, S. Davidsen, J. G. Skoglund, H. Barlaup, B. T. |
author_facet |
Vollset, K. W. Mahlum, S. Davidsen, J. G. Skoglund, H. Barlaup, B. T. |
author_sort |
Vollset, K. W. |
title |
Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts |
title_short |
Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts |
title_full |
Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts |
title_fullStr |
Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts |
title_full_unstemmed |
Interaction between migration behaviour and estuarine mortality in cultivated <scp>A</scp>tlantic salmon <scp>S</scp>almo salar smolts |
title_sort |
interaction between migration behaviour and estuarine mortality in cultivated <scp>a</scp>tlantic salmon <scp>s</scp>almo salar smolts |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/jfb.13097 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13097 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13097 |
long_lat |
ENVELOPE(15.306,15.306,66.954,66.954) |
geographic |
Almo |
geographic_facet |
Almo |
genre |
Atlantic salmon Gadus morhua Salmo salar |
genre_facet |
Atlantic salmon Gadus morhua Salmo salar |
op_source |
Journal of Fish Biology volume 89, issue 4, page 1974-1990 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.13097 |
container_title |
Journal of Fish Biology |
container_volume |
89 |
container_issue |
4 |
container_start_page |
1974 |
op_container_end_page |
1990 |
_version_ |
1784267090930171904 |