Blar i NTNU Open på forfatter "Finstad, Bengt"
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Assessment of a Passive Plankton Sampler Technology for Monitoring Densities of Planktonic Sea Lice (Lepeophtheirus salmonis & Caligus elongatus) in the Hardangerfjord
Tryggestad, Ingvild (Master thesis, 2023)De to artene av havlus, Lepeophtheirus salmonis og Caligus elongatus, er ektoparasittiske hoppekreps som utgjør den største parasittiske trusselen i lakseoppdrett og mot bestander av vill laksefisk i Norge. De to artenes ... -
Comparison of a passive plankton sampler technology with existing methods to estimate salmon lice (Lepeophtheirus salmonis) levels
Andersson, Amanda. (Master thesis, 2023)Lakselus (Lepeophtheirus salmonis) er sett på som en av de største utfordringene for industriell vekst innen Norsk akvakultur industri. Det er vanskelig å bestemme eksakte lakselus-nivåer i sjøen på grunn av den dynamiske ... -
Data for characterization of the optical properties of Atlantic salmon (Salmo salar) blood
Svendsen, Eirik; Randeberg, Lise Lyngsnes; Føre, Martin; Finstad, Bengt; Olsen, Rolf-Erik; Bloecher, Nina; Alfredsen, Jo Arve (Peer reviewed; Journal article, 2023)Photoplethysmography is a recent addition to physio-logging in Atlantic salmon which can be used for pulse oximetry provided that the properties for light propagation in salmon tissues are known. In this work, optical ... -
Development of a risk assessment for sea trout in coastal areas exploited for aquaculture
Finstad, Bengt; Sandvik, Anne Dagrun; Ugedal, Ola; Vollset, Knut; Karlsen, Ørjan; Davidsen, Jan Grimsrud; Sægrov, Harald; Lennox, Robert J. (Peer reviewed; Journal article, 2021)ABSTRACT: The regulation of aquaculture production in Norway considers the potential impact of salmon lice on wild fish. However, most attention has been focused on impacts on wild Atlantic salmon, despite the fact that ... -
Early marine migration of European silver eel (Anguilla anguilla) in Northern Norway
Davidsen, Jan Grimsrud; Finstad, Bengt; Økland, Finn; Thorstad, Eva Bonsak; Mo, Tor Atle; Rikardsen, Audun H. (Journal article; Peer reviewed, 2011) -
Early-season brown trout (Salmo trutta) migrants grow and survive better at sea
Jensen, Arne Johan; Diserud, Ola Håvard; Finstad, Bengt; Fiske, Peder; Thorstad, Eva Bonsak (Peer reviewed; Journal article, 2022)The timing of seaward migration is a key life-history trait for many anadromous fish species, with growth and survival at sea depending on a match/mismatch scenario between the timing of the sea entry and optimal conditions. ... -
ECG augmented pulse oximetry in Atlantic salmon (Salmo salar)—A pilot study
Svendsen, Eirik; Føre, Martin; Randeberg, Lise Lyngsnes; Olsen, Rolf-Erik; Finstad, Bengt; Remen, Mette; Bloecher, Nina; Alfredsen, Jo Arve (Peer reviewed; Journal article, 2023)Understanding the tolerance limits of fish is crucial for developing aquaculture operations that ensure good animal welfare. However, there exist little data describing the physiological responses in farmed Atlantic salmon, ... -
Effects of salmon lice (Lepeophtheirus salmonis) on wild caught sea trout (Salmo trutta) under experimental conditions
Ambjørndalen, Vegard Masteholtet (Master thesis, 2017)An increasing net cage farming of salmonids in Norway are leading to increased production of infective salmon louse (Lepeophtheirus salmonis) larvae in coastal areas. One of the most vulnerable salmonids for salmon lice ... -
Environmental influences on life history strategies in partially anadromous brown trout (Salmo trutta, Salmonidae)
Nevoux, Marie; Finstad, Bengt; Davidsen, Jan Grimsrud; Finlay, Ross; Josset, Quentin; Poole, Rusell; Höjesjö, Johan; Aarestrup, Kim; Persson, Lo; Tolvanen, Oula; Jonsson, Bror (Journal article; Peer reviewed, 2019)This paper reviews the life history of brown trout and factors influencing decisions to migrate. Decisions that maximize fitness appear dependent on size at age. In partly anadromous populations, individuals that attain ... -
Factors influencing return rate and marine residence durationin sea trout populations in Central Norway
Paterson, Rachel; Berntsen, Johan Henrik Hårdensson; Næsje, Tor; Berg, Marius; Finstad, Bengt (Peer reviewed; Journal article, 2021)Brown trout (Salmo trutta) display extensive plasticity in marine migratory behaviours, with marine migrations considered to be an adaptive strategy which enables sea trout to maximize growth and reproductive potential. ... -
Factors Influencing Sea Trout (Salmo trutta) Migration Dynamics in Western Norway
Arntzen, Sigve Nistad (Master thesis, 2022)Anadrom brunørret eller sjøørret (Salmo trutta) vandrer til sjøen for å maksimere dens vekst på grunn av bedre næringstilgang i marine habitater. Hvor lenge fisken er i sjøen og tidspunktet for vandring er påvirket av en ... -
FACTORS REGULATING THE RETURN MIGRATION OF SEA TROUT (SALMO TRUTTA) IN RIVER FREMSTADELVA
Sperre, Nicolas (Master thesis, 2021)Til tross for at luseinfestasjoner på vill Atlantisk laks (Salmo salar) i dag brukes som en bærekrafts indikator i det norske forvaltnings systemet, Trafikklyssystemet, behøves mer kunnskap om ørretens vandringsatferd samt ... -
Finding the needle in the haystack: Comparison of methods for salmon louse enumeration in plankton samples
Bui, Samantha; Dalvin, Sussie; Vågseth, Tone; Oppedal, Frode; Fossøy, Frode; Brandsegg, Hege; Jacobsen, Ása; Nordi, Gunnvør á; Fordyce, Mark; Michelsen, Helena Kling; Finstad, Bengt; Skern-Mauritzen, Rasmus (Peer reviewed; Journal article, 2021)The economic and social implications of salmon louse (Lepeophtheirus salmonis) epidemics in salmon aquaculture drive focus of the dispersal dynamics of the planktonic larval stages. The vast spatial scale and high connectivity ... -
Fiskebiologiske undersøkelser i Auravassdraget. Årsrapport 2005
Jensen, Arne Johan; Finstad, Bengt; Hvidsten, Nils Arne; Jensås, Jan Gunnar; Johnsen, Bjørn Ove; Lund, Egil; Kjøsnes, Arne; Solem, Øyvind (NINA rapport;115, Research report, 2006)Formålet med denne undersøkelsen er å overvåke utviklingen av bestandene av laks og sjøør-ret i Auravassdraget. Resultatene skal danne grunnlag for å evaluere de tiltakene som er gjen-nomført som kompensasjon for negative ... -
Fiskefysiologi
Olsen, Rolf Erik; Finstad, Bengt (Book, 2024) -
Heart rate and swimming activity as indicators of post-surgical recovery time of Atlantic salmon (Salmo salar)
Føre, Martin; Svendsen, Eirik; Økland, Finn; Gräns, Albin; Alfredsen, Jo Arve; Finstad, Bengt; Hedger, Richard David; Uglem, Ingebrigt (Peer reviewed; Journal article, 2021)Background Fish telemetry using electronic transmitter or data storage tags has become a common method for studying free-swimming fish both in the wild and in aquaculture. However, fish used in telemetry studies must be ... -
Heart rate and swimming activity as stress indicators for Atlantic salmon (Salmo salar)
Svendsen, Eirik; Føre, Martin; Økland, Finn; Gräns, Albin; Hedger, Richard David; Alfredsen, Jo Arve; Uglem, Ingebrigt; Rosten, Carolyn; Frank, Kevin; Erikson, Ulf Gøran; Finstad, Bengt (Peer reviewed; Journal article, 2020)We investigated the relationship between telemetry measurements of heart rate and swimming activity and the physiological status in farmed Atlantic salmon (Salmo salar) to assess the potential to use telemetry measurements ... -
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 (Journal article; Peer reviewed, 2016)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 ... -
Influence of parasite burdens on the acquisition of sea lice (Lepeophtheirus salmonis & Caligus elongatus) by wild Atlantic salmon post-smolt (Salmo salar)
Tonstad, Astrid Marie (Master thesis, 2021)Vert-parasitt-interaksjoner er naturlig komplekse, og virulensen av en parasitt avhenger av en rekke faktorer (f.eks. parasittens livsstadie, vertens form, sesongbasert dynamikk). Atlantisk laks (Salmo salar) gyter i ... -
Innsamling og sammenstilling av relevant kunnskap om Sognefjorden
Solbakken, Roar; Henriksen, Kristian; Reitan, Kjell Inge; Arff, Johanne; Ellingsen, Ingrid H.; Hindar, Kjetil; Fiske, Peder; Robertsen, Grethe; Finstad, Bengt; Aas, Øystein; Johnsen, Bjørn Ove (Research report, 2011)Rapporten er utarbeidet av SINTEF Fiskeri og havbruk i samarbeid med Norsk institutt for naturforskning. Rapporten har kartlagt status og kunnskapshull relatert tit Sognefjorden på områdene: • Akvakultur • Anadrom laksefisk ...