Show simple item record

dc.contributor.authorHedger, Richard David
dc.contributor.authorDiserud, Ola Håvard
dc.contributor.authorFinstad, Bengt
dc.contributor.authorJensen, Arne Johan
dc.contributor.authorHendrichsen, Ditte Katrine
dc.contributor.authorUgedal, Ola
dc.contributor.authorNæsje, Tor
dc.description.abstractSalmon 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 returnen_US
dc.publisherInter Researchen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleModeling salmon lice effects on sea trout population dynamics using an individual-based approachen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480en_US
dc.subject.nsiVDP::Zoology and botany: 480en_US
dc.source.journalAquaculture Environment Interactionsen_US
dc.relation.projectNorsk institutt for naturforskning: Strategic Institute Initiative ‘Interactions between aquaculen_US
dc.relation.projectMiljødirektoratet: RN 20R27F5Den_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal