Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea
Persistent pollutants in an Atlantic salmon (Salmo salar) population spawning in a river of southern Sweden were investigated. The population was characterized by a high growth rate. Some males reached 20-30 kg after 3 to 4 years in the sea. The fat content of migrating salmon varied by one order of...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing, NRC Research Press
1996
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Online Access: | https://lup.lub.lu.se/record/8163929 https://doi.org/10.1139/cjfas-53-1-62 |
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ftulundlup:oai:lup.lub.lu.se:a11e22e3-62ec-4eef-942e-80b558d0c81e 2023-05-15T15:32:26+02:00 Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea Larsson, Per Backe, Cecilia Bremle, Gudrun Eklöv, Anders Okla, Lennart 1996 https://lup.lub.lu.se/record/8163929 https://doi.org/10.1139/cjfas-53-1-62 eng eng Canadian Science Publishing, NRC Research Press https://lup.lub.lu.se/record/8163929 http://dx.doi.org/10.1139/cjfas-53-1-62 scopus:0029728821 Canadian Journal of Fisheries and Aquatic Sciences; 53(1), pp 62-69 (1996) ISSN: 1205-7533 Biological Sciences contributiontojournal/article info:eu-repo/semantics/article text 1996 ftulundlup https://doi.org/10.1139/cjfas-53-1-62 2023-02-01T23:32:59Z Persistent pollutants in an Atlantic salmon (Salmo salar) population spawning in a river of southern Sweden were investigated. The population was characterized by a high growth rate. Some males reached 20-30 kg after 3 to 4 years in the sea. The fat content of migrating salmon varied by one order of magnitude and was the most significant correlate of pollutant concentrations. No relationships were recorded between fat content and gender, age (weight, length), year at sea, or different measures of condition. The reasons for this may be the varied evolutionary strategies for maximizing reproductive output; male salmon may enter the spawning river as small grilse and spawn opportunely, or migrate at a larger size, when they can hold spawning territories in the river. Females have a greater and more uniform size, and spend more energy on gonadal products. The varying fat content of individual fish may also be attributed to foraging in different areas of the Baltic and thereby to migration distances as well as foraging strategies. When pollutant levels were normalized for fat content, other factors such as age (weight, length) were shown to be important for uptake; older fish had higher levels of pollutants than younger ones Article in Journal/Newspaper Atlantic salmon Salmo salar Lund University Publications (LUP) Canadian Journal of Fisheries and Aquatic Sciences 53 1 62 69 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Biological Sciences |
spellingShingle |
Biological Sciences Larsson, Per Backe, Cecilia Bremle, Gudrun Eklöv, Anders Okla, Lennart Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea |
topic_facet |
Biological Sciences |
description |
Persistent pollutants in an Atlantic salmon (Salmo salar) population spawning in a river of southern Sweden were investigated. The population was characterized by a high growth rate. Some males reached 20-30 kg after 3 to 4 years in the sea. The fat content of migrating salmon varied by one order of magnitude and was the most significant correlate of pollutant concentrations. No relationships were recorded between fat content and gender, age (weight, length), year at sea, or different measures of condition. The reasons for this may be the varied evolutionary strategies for maximizing reproductive output; male salmon may enter the spawning river as small grilse and spawn opportunely, or migrate at a larger size, when they can hold spawning territories in the river. Females have a greater and more uniform size, and spend more energy on gonadal products. The varying fat content of individual fish may also be attributed to foraging in different areas of the Baltic and thereby to migration distances as well as foraging strategies. When pollutant levels were normalized for fat content, other factors such as age (weight, length) were shown to be important for uptake; older fish had higher levels of pollutants than younger ones |
format |
Article in Journal/Newspaper |
author |
Larsson, Per Backe, Cecilia Bremle, Gudrun Eklöv, Anders Okla, Lennart |
author_facet |
Larsson, Per Backe, Cecilia Bremle, Gudrun Eklöv, Anders Okla, Lennart |
author_sort |
Larsson, Per |
title |
Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea |
title_short |
Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea |
title_full |
Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea |
title_fullStr |
Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea |
title_full_unstemmed |
Persistent pollutants in a salmon population (Salmo salar) of the southern Baltic Sea |
title_sort |
persistent pollutants in a salmon population (salmo salar) of the southern baltic sea |
publisher |
Canadian Science Publishing, NRC Research Press |
publishDate |
1996 |
url |
https://lup.lub.lu.se/record/8163929 https://doi.org/10.1139/cjfas-53-1-62 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences; 53(1), pp 62-69 (1996) ISSN: 1205-7533 |
op_relation |
https://lup.lub.lu.se/record/8163929 http://dx.doi.org/10.1139/cjfas-53-1-62 scopus:0029728821 |
op_doi |
https://doi.org/10.1139/cjfas-53-1-62 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
53 |
container_issue |
1 |
container_start_page |
62 |
op_container_end_page |
69 |
_version_ |
1766362924925845504 |