Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea)
The susceptibility of a Baltic salmon stock Salmo salar (Indalsälv, central Sweden) to Norwegian Gyrodactylus salaris (Figga strain, central Norway) was experimentally tested and compared with previously obtained results on East Atlantic salmon (Lierelva, SE Norway). Contrary to expectation, the Bal...
Published in: | Diseases of Aquatic Organisms |
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Inter Research
2004
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/63239/ https://doi.org/10.3354/dao058171 |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:63239 2023-05-15T15:31:32+02:00 Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) Bakke, T. A. Harris, P. D. Hansen, H. Cable, Joanne Hansen, L. P. 2004 https://orca.cardiff.ac.uk/id/eprint/63239/ https://doi.org/10.3354/dao058171 unknown Inter Research Bakke, T. A., Harris, P. D., Hansen, H., Cable, Joanne https://orca.cardiff.ac.uk/view/cardiffauthors/A042952A.html orcid:0000-0002-8510-7055 orcid:0000-0002-8510-7055 and Hansen, L. P. 2004. Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea). Diseases of Aquatic Organisms 58 (2-3) , pp. 171-177. 10.3354/dao058171 https://doi.org/10.3354/dao058171 doi:10.3354/dao058171 Q Science (General) Article PeerReviewed 2004 ftunivcardiff https://doi.org/10.3354/dao058171 2022-10-27T22:39:52Z The susceptibility of a Baltic salmon stock Salmo salar (Indalsälv, central Sweden) to Norwegian Gyrodactylus salaris (Figga strain, central Norway) was experimentally tested and compared with previously obtained results on East Atlantic salmon (Lierelva, SE Norway). Contrary to expectation, the Baltic salmon, which had no prior exposure to this parasite strain, appeared almost as susceptible as the Norwegian salmon parr that naturally experience G. salaris-induced mortality. Individually isolated salmon of both stocks sustained G. salaris infections with little evidence of innate resistance. A few individuals of the Indalsälv stock controlled their infection from the beginning, but overall there was considerable heterogeneity in the course of infection in both stocks. On individual hosts, G. salaris growth rates declined steadily throughout the infection, a trend which was particularly marked amongst the Lierelva stock. On shoaling Lierelva fish, there was some evidence of reduced parasite population growth towards the end of the infection; this was not apparent in Indalsälv fishes. These results reflect a growing awareness that not all Baltic salmon may be resistant to Norwegian G. salaris, and that Norwegian and Baltic G. salaris strains may differ in virulence. Consequently, management decisions concerning this parasite-host system should be based upon the actual, and tested, susceptibility of stocks under consideration and not upon identification of stocks as either Atlantic or Baltic. Article in Journal/Newspaper Atlantic salmon Salmo salar Cardiff University: ORCA (Online Research @ Cardiff) Norway Diseases of Aquatic Organisms 58 171 177 |
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Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
topic |
Q Science (General) |
spellingShingle |
Q Science (General) Bakke, T. A. Harris, P. D. Hansen, H. Cable, Joanne Hansen, L. P. Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) |
topic_facet |
Q Science (General) |
description |
The susceptibility of a Baltic salmon stock Salmo salar (Indalsälv, central Sweden) to Norwegian Gyrodactylus salaris (Figga strain, central Norway) was experimentally tested and compared with previously obtained results on East Atlantic salmon (Lierelva, SE Norway). Contrary to expectation, the Baltic salmon, which had no prior exposure to this parasite strain, appeared almost as susceptible as the Norwegian salmon parr that naturally experience G. salaris-induced mortality. Individually isolated salmon of both stocks sustained G. salaris infections with little evidence of innate resistance. A few individuals of the Indalsälv stock controlled their infection from the beginning, but overall there was considerable heterogeneity in the course of infection in both stocks. On individual hosts, G. salaris growth rates declined steadily throughout the infection, a trend which was particularly marked amongst the Lierelva stock. On shoaling Lierelva fish, there was some evidence of reduced parasite population growth towards the end of the infection; this was not apparent in Indalsälv fishes. These results reflect a growing awareness that not all Baltic salmon may be resistant to Norwegian G. salaris, and that Norwegian and Baltic G. salaris strains may differ in virulence. Consequently, management decisions concerning this parasite-host system should be based upon the actual, and tested, susceptibility of stocks under consideration and not upon identification of stocks as either Atlantic or Baltic. |
format |
Article in Journal/Newspaper |
author |
Bakke, T. A. Harris, P. D. Hansen, H. Cable, Joanne Hansen, L. P. |
author_facet |
Bakke, T. A. Harris, P. D. Hansen, H. Cable, Joanne Hansen, L. P. |
author_sort |
Bakke, T. A. |
title |
Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) |
title_short |
Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) |
title_full |
Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) |
title_fullStr |
Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) |
title_full_unstemmed |
Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea) |
title_sort |
susceptibility of baltic and east atlantic salmon salmo salar stocks to gyrodactylus salaris (monogenea) |
publisher |
Inter Research |
publishDate |
2004 |
url |
https://orca.cardiff.ac.uk/id/eprint/63239/ https://doi.org/10.3354/dao058171 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Bakke, T. A., Harris, P. D., Hansen, H., Cable, Joanne https://orca.cardiff.ac.uk/view/cardiffauthors/A042952A.html orcid:0000-0002-8510-7055 orcid:0000-0002-8510-7055 and Hansen, L. P. 2004. Susceptibility of Baltic and East Atlantic salmon Salmo salar stocks to Gyrodactylus salaris (Monogenea). Diseases of Aquatic Organisms 58 (2-3) , pp. 171-177. 10.3354/dao058171 https://doi.org/10.3354/dao058171 doi:10.3354/dao058171 |
op_doi |
https://doi.org/10.3354/dao058171 |
container_title |
Diseases of Aquatic Organisms |
container_volume |
58 |
container_start_page |
171 |
op_container_end_page |
177 |
_version_ |
1766362057533292544 |