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dc.contributor.authorThorstad, Eva Bonsak
dc.contributor.authorTodd, Christopher D.
dc.contributor.authorUglem, Ingebrigt
dc.contributor.authorBjørn, Pål Arne
dc.contributor.authorGargan, Patrick G.
dc.contributor.authorVollset, Knut Wiik
dc.contributor.authorHalttunen, Elina
dc.contributor.authorKålås, Steinar
dc.contributor.authorBerg, Marius
dc.contributor.authorFinstad, Bengt
dc.date.accessioned2015-08-28T08:27:54Z
dc.date.accessioned2015-11-06T12:40:40Z
dc.date.available2015-08-28T08:27:54Z
dc.date.available2015-11-06T12:40:40Z
dc.date.issued2015
dc.identifier.citationAquaculture Environment Interactions 2015, 7:91-113nb_NO
dc.identifier.issn1869-7534
dc.identifier.urihttp://hdl.handle.net/11250/2359600
dc.description.abstractSalmon farming increases the abundance of salmon lice, which are ectoparasites of salmonids in the sea. Here we review the current knowledge on the effects of salmon lice on wild sea trout. Salmon lice feed on host mucus, skin and muscle, and infestation may induce osmoregulatory dysfunction, physiological stress, anaemia, reduced feeding and growth, increased susceptibility to secondary infections, reduced disease resistance and ultimately mortality of individual sea trout. Wild sea trout in farm-free areas generally show low lice levels. In farm-intensive areas, lice levels on wild sea trout are typically higher, and more variable than in farm-free areas. Lice on wild sea trout are found at elevated levels particularly within 30 km of the nearest farms but can also extend to further ranges. Salmon lice in intensively farmed areas have negatively impacted wild sea trout populations by reducing growth and increasing marine mortality. Quantification of these impacts remains a challenge, although population-level effects have been quantified in Atlantic salmon by comparing the survival of chemically protected fish with control groups, which are relevant also for sea trout. Mortality attributable to salmon lice can lead to an average of 12−29% fewer salmon spawners. Reduced growth and increased mortality will reduce the benefits of marine migration for sea trout, and may also result in selection against anadromy in areas with high lice levels. Salmon lice-induced effects on sea trout populations may also extend to altered genetic composition and reduced diversity, and possibly to the local loss of sea trout, and establishment of exclusively freshwater resident populations. Salmon lice · Lepeophtheirus salmonis · Sea trout · Salmo trutta · Parasite · Aquaculture · Salmon farmingnb_NO
dc.language.isoengnb_NO
dc.rightsNavngivelse 3.0 Norge*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/no/*
dc.subjectsalmon licenb_NO
dc.subjectLepeophtheirus salmonisnb_NO
dc.subjectsea troutnb_NO
dc.subjectSalmo truttanb_NO
dc.subjectparasitenb_NO
dc.subjectaquaculturenb_NO
dc.subjectsalmon farmingnb_NO
dc.titleEffects of salmon lice Lepeophtheirus salmonis on wild sea trout Salmo trutta—a literature reviewnb_NO
dc.typePeer reviewednb_NO
dc.date.updated2015-08-28T08:27:53Z
dc.subject.nsiVDP::Mathematics and natural science: 400nb_NO
dc.source.pagenumber91-113nb_NO
dc.source.volume7nb_NO
dc.source.journalAquaculture Environment Interactionsnb_NO
dc.identifier.doi10.3354/aei00142
dc.identifier.cristin1260480


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Navngivelse 3.0 Norge
Except where otherwise noted, this item's license is described as Navngivelse 3.0 Norge