Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords
<qd> Bjørn, P-A., Finstad, B., Kristoffersen, R., Rikardsen, A. H., and McKinley, R. S. 2007. Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Krøyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords –...
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fthighwire:oai:open-archive.highwire.org:icesjms:fsl029v1 2023-05-15T14:29:53+02:00 Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords Bjørn, P-A. Finstad, B. Kristoffersen, R. McKinley, R. S. Rikardsen, A. H. 2006-12-18 07:01:48.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fsl029v1 https://doi.org/10.1093/icesjms/fsl029 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fsl029v1 http://dx.doi.org/10.1093/icesjms/fsl029 Copyright (C) 2006, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Article TEXT 2006 fthighwire https://doi.org/10.1093/icesjms/fsl029 2013-05-26T22:25:41Z <qd> Bjørn, P-A., Finstad, B., Kristoffersen, R., Rikardsen, A. H., and McKinley, R. S. 2007. Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Krøyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords – ICES Journal of Marine Science, 64. Differences in salmon louse ( Lepeophtheirus salmonis ) infestation on sympatric populations of fjord-migrating, Atlantic salmon post-smolts ( Salmo salar ), brown trout ( Salmo trutta ) (sea trout), and Arctic charr ( Salvelinus alpinus ) were studied in three fjords with fish-farming activity in northern Norway during the period June–August 2000. Atlantic salmon post-smolts were only captured in the fjords during late June and early July, and probably left the fjords subsequently. No fish were infested with salmon lice. In contrast, brown trout and Arctic charr had similar infection patterns during their sampling periods, with very low prevalence and mean infection intensity during June (0–21% and 0–6 lice per fish, respectively), slightly increasing in July (8–70% and 6–12 lice per fish, respectively), and peaking in August (80–88% and 19–27 lice per fish, respectively). The chalimus stages dominated during June and July, with a few pre-adult and adult stages observed in July, and all stages were found frequently during August. The observations indicate that Atlantic salmon may have a mismatch between the time of louse infestation and their post-smolt fjord migration in northern fjords. In contrast, brown trout and Arctic charr feed within the fjords throughout summer and have a higher risk of harmful infestation in years with suitable environmental conditions for salmon louse development, especially in fish‐farming areas. Arctic charr usually spend the shortest time at sea of the three species, and the salmon lice may not have time to develop to the adult stage on this species. </qd> Text Arctic charr Arctic Atlantic salmon Northern Norway Salmo salar Salvelinus alpinus HighWire Press (Stanford University) Arctic Bjørn ENVELOPE(12.585,12.585,66.082,66.082) Norway ICES Journal of Marine Science 64 2 386 393 |
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Article Bjørn, P-A. Finstad, B. Kristoffersen, R. McKinley, R. S. Rikardsen, A. H. Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords |
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<qd> Bjørn, P-A., Finstad, B., Kristoffersen, R., Rikardsen, A. H., and McKinley, R. S. 2007. Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Krøyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords – ICES Journal of Marine Science, 64. Differences in salmon louse ( Lepeophtheirus salmonis ) infestation on sympatric populations of fjord-migrating, Atlantic salmon post-smolts ( Salmo salar ), brown trout ( Salmo trutta ) (sea trout), and Arctic charr ( Salvelinus alpinus ) were studied in three fjords with fish-farming activity in northern Norway during the period June–August 2000. Atlantic salmon post-smolts were only captured in the fjords during late June and early July, and probably left the fjords subsequently. No fish were infested with salmon lice. In contrast, brown trout and Arctic charr had similar infection patterns during their sampling periods, with very low prevalence and mean infection intensity during June (0–21% and 0–6 lice per fish, respectively), slightly increasing in July (8–70% and 6–12 lice per fish, respectively), and peaking in August (80–88% and 19–27 lice per fish, respectively). The chalimus stages dominated during June and July, with a few pre-adult and adult stages observed in July, and all stages were found frequently during August. The observations indicate that Atlantic salmon may have a mismatch between the time of louse infestation and their post-smolt fjord migration in northern fjords. In contrast, brown trout and Arctic charr feed within the fjords throughout summer and have a higher risk of harmful infestation in years with suitable environmental conditions for salmon louse development, especially in fish‐farming areas. Arctic charr usually spend the shortest time at sea of the three species, and the salmon lice may not have time to develop to the adult stage on this species. </qd> |
format |
Text |
author |
Bjørn, P-A. Finstad, B. Kristoffersen, R. McKinley, R. S. Rikardsen, A. H. |
author_facet |
Bjørn, P-A. Finstad, B. Kristoffersen, R. McKinley, R. S. Rikardsen, A. H. |
author_sort |
Bjørn, P-A. |
title |
Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords |
title_short |
Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords |
title_full |
Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords |
title_fullStr |
Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords |
title_full_unstemmed |
Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Kroyer), infestation on sympatric populations of Atlantic salmon, brown trout, and Arctic charr within northern fjords |
title_sort |
differences in risks and consequences of salmon louse, lepeophtheirus salmonis (kroyer), infestation on sympatric populations of atlantic salmon, brown trout, and arctic charr within northern fjords |
publisher |
Oxford University Press |
publishDate |
2006 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fsl029v1 https://doi.org/10.1093/icesjms/fsl029 |
long_lat |
ENVELOPE(12.585,12.585,66.082,66.082) |
geographic |
Arctic Bjørn Norway |
geographic_facet |
Arctic Bjørn Norway |
genre |
Arctic charr Arctic Atlantic salmon Northern Norway Salmo salar Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Atlantic salmon Northern Norway Salmo salar Salvelinus alpinus |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fsl029v1 http://dx.doi.org/10.1093/icesjms/fsl029 |
op_rights |
Copyright (C) 2006, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsl029 |
container_title |
ICES Journal of Marine Science |
container_volume |
64 |
container_issue |
2 |
container_start_page |
386 |
op_container_end_page |
393 |
_version_ |
1766303841813266432 |