Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis
Parasites can, in theory, have large impacts on the survival of fish populations. One method to evaluate such impacts on anadromous species is to apply manipulative field experiments in which parallel groups of antiparasitically treated and non-treated fish are simultaneously released and then subse...
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2468997 2023-05-15T15:32:55+02:00 Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis Vollset, Knut Wiik Krontveit, Randi Ingebjørg Jansen, Peder A Finstad, Bengt Barlaup, Bjørn Torgeir Skilbrei, Ove Tommy Krkošek, Martin Romundstad, Pål Richard Aunsmo, Arnfinn Jensen, Arne Johan Dohoo, Ian 2016 http://hdl.handle.net/11250/2468997 https://doi.org/10.1111/faf.12141 eng eng Wiley http://onlinelibrary.wiley.com/doi/10.1111/faf.12141/epdf Norges forskningsråd: 243912 Fish and Fisheries. 2016, 17 (3), 714-730. urn:issn:1467-2960 http://hdl.handle.net/11250/2468997 https://doi.org/10.1111/faf.12141 cristin:1330749 714-730 17 Fish and Fisheries 3 Journal article Peer reviewed 2016 ftntnutrondheimi https://doi.org/10.1111/faf.12141 2019-09-17T06:53:15Z Parasites can, in theory, have large impacts on the survival of fish populations. One method to evaluate such impacts on anadromous species is to apply manipulative field experiments in which parallel groups of antiparasitically treated and non-treated fish are simultaneously released and then subsequently recaptured as returning adults. A systematic review and meta-analysis on all such Norwegian studies on Salmo salar provided a data set for the time period 1996 to 2011 on 118 release groups comprising 657 624 fish released and 3989 recaptured. The overall risk ratio (RR) was estimated to be 1.18 (95% CI: 1.07–1.30). The effect varied strongly between groups, (Higgins I2 = 40.1%). Over 70% of this heterogeneity could be explained by the release location, time period and baseline survival. The most important predictor variable was baseline survival. In groups with low recapture in the control group (low baseline survival), the effect of treatment was high (RR = 1.7), while in groups with high recapture in the control group (high baseline survival), there was no effect of treatment (RR ~ 1.00). The most prevalent parasite in the region affected by the drugs administered was Lepeophtheirus salmonis. Hence, the meta-analysis supports the hypothesis that L. salmonis contributes to the mortality of S. salar during outward migration. However, the effect of treatment was not consistent, but was evidently strongly modulated by other risk factors. The results suggest that the population-level effects of parasites cannot be estimated independently of other factors affecting the marine survival of S. salar. Emamectin benzoate, fish farming, Lepeophtheirus salmonis, parasite, salmon louse, substance EX acceptedVersion © 2015 John Wiley & Sons Ltd. This is the peer reviewed version of the article, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/faf.12141/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Fish and Fisheries 17 3 714 730 |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
Parasites can, in theory, have large impacts on the survival of fish populations. One method to evaluate such impacts on anadromous species is to apply manipulative field experiments in which parallel groups of antiparasitically treated and non-treated fish are simultaneously released and then subsequently recaptured as returning adults. A systematic review and meta-analysis on all such Norwegian studies on Salmo salar provided a data set for the time period 1996 to 2011 on 118 release groups comprising 657 624 fish released and 3989 recaptured. The overall risk ratio (RR) was estimated to be 1.18 (95% CI: 1.07–1.30). The effect varied strongly between groups, (Higgins I2 = 40.1%). Over 70% of this heterogeneity could be explained by the release location, time period and baseline survival. The most important predictor variable was baseline survival. In groups with low recapture in the control group (low baseline survival), the effect of treatment was high (RR = 1.7), while in groups with high recapture in the control group (high baseline survival), there was no effect of treatment (RR ~ 1.00). The most prevalent parasite in the region affected by the drugs administered was Lepeophtheirus salmonis. Hence, the meta-analysis supports the hypothesis that L. salmonis contributes to the mortality of S. salar during outward migration. However, the effect of treatment was not consistent, but was evidently strongly modulated by other risk factors. The results suggest that the population-level effects of parasites cannot be estimated independently of other factors affecting the marine survival of S. salar. Emamectin benzoate, fish farming, Lepeophtheirus salmonis, parasite, salmon louse, substance EX acceptedVersion © 2015 John Wiley & Sons Ltd. This is the peer reviewed version of the article, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/faf.12141/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
format |
Article in Journal/Newspaper |
author |
Vollset, Knut Wiik Krontveit, Randi Ingebjørg Jansen, Peder A Finstad, Bengt Barlaup, Bjørn Torgeir Skilbrei, Ove Tommy Krkošek, Martin Romundstad, Pål Richard Aunsmo, Arnfinn Jensen, Arne Johan Dohoo, Ian |
spellingShingle |
Vollset, Knut Wiik Krontveit, Randi Ingebjørg Jansen, Peder A Finstad, Bengt Barlaup, Bjørn Torgeir Skilbrei, Ove Tommy Krkošek, Martin Romundstad, Pål Richard Aunsmo, Arnfinn Jensen, Arne Johan Dohoo, Ian Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis |
author_facet |
Vollset, Knut Wiik Krontveit, Randi Ingebjørg Jansen, Peder A Finstad, Bengt Barlaup, Bjørn Torgeir Skilbrei, Ove Tommy Krkošek, Martin Romundstad, Pål Richard Aunsmo, Arnfinn Jensen, Arne Johan Dohoo, Ian |
author_sort |
Vollset, Knut Wiik |
title |
Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis |
title_short |
Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis |
title_full |
Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis |
title_fullStr |
Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis |
title_full_unstemmed |
Impacts of parasites on marine survival of Atlantic salmon: a meta-analysis |
title_sort |
impacts of parasites on marine survival of atlantic salmon: a meta-analysis |
publisher |
Wiley |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2468997 https://doi.org/10.1111/faf.12141 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
714-730 17 Fish and Fisheries 3 |
op_relation |
http://onlinelibrary.wiley.com/doi/10.1111/faf.12141/epdf Norges forskningsråd: 243912 Fish and Fisheries. 2016, 17 (3), 714-730. urn:issn:1467-2960 http://hdl.handle.net/11250/2468997 https://doi.org/10.1111/faf.12141 cristin:1330749 |
op_doi |
https://doi.org/10.1111/faf.12141 |
container_title |
Fish and Fisheries |
container_volume |
17 |
container_issue |
3 |
container_start_page |
714 |
op_container_end_page |
730 |
_version_ |
1766363403048189952 |