Modeling salmon lice effects on sea trout population dynamics using an individual-based approach
Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may contribute to sea trout population decline. For effective management of activities that increase exposure to salmon lice, such as salmon aquaculture,...
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Inter Research
2021
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Online Access: | https://hdl.handle.net/11250/2774030 https://doi.org/10.3354/aei00397 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2774030 2023-05-15T17:43:31+02:00 Modeling salmon lice effects on sea trout population dynamics using an individual-based approach Hedger, Richard David Diserud, Ola Håvard Finstad, Bengt Jensen, Arne Johan Hendrichsen, Ditte Katrine Ugedal, Ola Næsje, Tor 2021 application/pdf https://hdl.handle.net/11250/2774030 https://doi.org/10.3354/aei00397 eng eng Inter Research Norsk institutt for naturforskning: Strategic Institute Initiative ‘Interactions between aquacul Miljødirektoratet: RN 20R27F5D urn:issn:1869-215X https://hdl.handle.net/11250/2774030 https://doi.org/10.3354/aei00397 cristin:1913738 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY Aquaculture Environment Interactions VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Peer reviewed Journal article 2021 ftntnutrondheimi https://doi.org/10.3354/aei00397 2021-09-08T22:35:17Z Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may contribute to sea trout population decline. For effective management of activities that increase exposure to salmon lice, such as salmon aquaculture, it is necessary to have a full understanding of how salmon lice may affect sea trout populations. An individual-based model (IBTRUTTA) was therefore developed to investigate the potential effects of salmon lice infestation on sea trout population abundance and dynamics based on data from the River Halselva and Altafjord system in northern Norway. This model allowed investigation of the effect of lice-induced mortality and also the compensatory salmonid behavioral mechanisms of premature return to freshwater, either persistent for overwintering or transitory after which sea trout could go back to sea. It was found that, in the absence of compensatory mechanisms, even low rates of lice infestation could lead to marked declines in sea trout abundance. Compensatory behavioral mechanisms had the potential to reduce these de - clines, but persistent premature return resulted in reduced body mass of returning adults. The shape of the stock-recruitment relationship was also shown to strongly affect how lice-induced mortality impacted the population. Individual-based model · Sea trout · Salmon lice · Lice-induced mortality · Premature return publishedVersion Article in Journal/Newspaper Northern Norway NTNU Open Archive (Norwegian University of Science and Technology) Norway Aquaculture Environment Interactions 13 145 163 |
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Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Hedger, Richard David Diserud, Ola Håvard Finstad, Bengt Jensen, Arne Johan Hendrichsen, Ditte Katrine Ugedal, Ola Næsje, Tor Modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may contribute to sea trout population decline. For effective management of activities that increase exposure to salmon lice, such as salmon aquaculture, it is necessary to have a full understanding of how salmon lice may affect sea trout populations. An individual-based model (IBTRUTTA) was therefore developed to investigate the potential effects of salmon lice infestation on sea trout population abundance and dynamics based on data from the River Halselva and Altafjord system in northern Norway. This model allowed investigation of the effect of lice-induced mortality and also the compensatory salmonid behavioral mechanisms of premature return to freshwater, either persistent for overwintering or transitory after which sea trout could go back to sea. It was found that, in the absence of compensatory mechanisms, even low rates of lice infestation could lead to marked declines in sea trout abundance. Compensatory behavioral mechanisms had the potential to reduce these de - clines, but persistent premature return resulted in reduced body mass of returning adults. The shape of the stock-recruitment relationship was also shown to strongly affect how lice-induced mortality impacted the population. Individual-based model · Sea trout · Salmon lice · Lice-induced mortality · Premature return publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hedger, Richard David Diserud, Ola Håvard Finstad, Bengt Jensen, Arne Johan Hendrichsen, Ditte Katrine Ugedal, Ola Næsje, Tor |
author_facet |
Hedger, Richard David Diserud, Ola Håvard Finstad, Bengt Jensen, Arne Johan Hendrichsen, Ditte Katrine Ugedal, Ola Næsje, Tor |
author_sort |
Hedger, Richard David |
title |
Modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
title_short |
Modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
title_full |
Modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
title_fullStr |
Modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
title_full_unstemmed |
Modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
title_sort |
modeling salmon lice effects on sea trout population dynamics using an individual-based approach |
publisher |
Inter Research |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2774030 https://doi.org/10.3354/aei00397 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Aquaculture Environment Interactions |
op_relation |
Norsk institutt for naturforskning: Strategic Institute Initiative ‘Interactions between aquacul Miljødirektoratet: RN 20R27F5D urn:issn:1869-215X https://hdl.handle.net/11250/2774030 https://doi.org/10.3354/aei00397 cristin:1913738 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/aei00397 |
container_title |
Aquaculture Environment Interactions |
container_volume |
13 |
container_start_page |
145 |
op_container_end_page |
163 |
_version_ |
1766145616250929152 |