Brage IMR
Not a member yet
12041 research outputs found
Sort by
Provisional sandeel fishery advice in the Norwegian exclusive economic zone in 2025
Full text linkHavforskningsinstituttet tilrår i sitt foreløpige råd nullfangst av tobis i 2025 i norsk økonomisk sone grunnet kritisk lav biomasse av tobis i alle forvaltningsområder. Resultatene fra HI sitt akustiske tokt i april-mai 2025 vil gi grunnlag for et oppdatert råd på tobis som vil foreligge senest 15. mai 2025.Foreløpig råd for tobisfiske i norsk økonomisk sone i 2025publishedVersio
Assessment of application for the authorisation of soy leghemoglobin produced from genetically modified Komagataella phaffii for food use in the European Union under Regulation (EC) No 1829/2003 (application EFSA-GMO-NL-2019-162)
Full text linkpublishedVersio
Kvalitetskriterier for rensefisk og effekten av stamfiskerernæring - CleanLifeCycle
Full text linkProsjektet hadde som hovedmål å undersøke hvordan stamfiskernæring påvirker fekunditet hos morfisken og kvaliteten på avkommet. Dette skulle undersøkes hos de to rensefiskartene rognkjeks og berggylt, der rognkjeks ble gitt fôr med ulike fettnivå og berggylt ble gitt fôr med ulike nivå av fettsyren arakidonsyre. I rognkjeksforsøket var dødeligheten lavest i lavfett-gruppen, noe som kan ha sammenheng med at de kom sent i gyting. Leverindeksen var lavest hos fisk som fikk det magreste fôret. Hannene sluttet å vokse før hunnene, men var også gyteklare før hunnene. Hunnene i høyfett-gruppen startet gytingen før de to andre gruppene, og avsluttet også tidligere. Dette kan bety at gytestart til en viss grad kan styres med fôrsammensetning. Gonadeindeksen hos hunner på fôr med lavt fett økte først fram mot april, noe som har sammenheng med at de modnet senere enn de to andre behandlingene. Mengde rogn som ble produsert (strøket + gytt i kar) var lavere i gruppen på lavt fett, som trolig skyldes at de kom senere i gyting. Befruktnings- og klekkeprosenter fra forsøkene ved SINTEF Ocean tyder på at kvaliteten på rogna fra fisk på det magreste fôret kan ha bedre kvalitet enn ved de to andre behandlingene. Kvaliteten på rogna i forsøket var ofte dårlig, noe vi mener for en stor del skyldes at fisken gikk på for høy temperatur. Berggylt gyter små (0,75 ± 0,04 mm; gj. snitt ± standard avvik) demersale egg, og et relativt kort fritt embryo stadium der de lever på plommesekken. De må startfôres med små plankton dyr som rotatorier og skipsrur nauplier, og det er relativt høy dødelighet i disse stadiene. Basert på tidligere funn i ernæringsanalyser av rogn fra vill berggylt, bestemte vi oss for å undersøke om gyte- og eggkriterier kunne styrkes med økte mengder arakidonsyre (ARA) i fôret til stamfisken. For å muliggjøre dette studiet utviklet vi et mer robust system for å beregne mengden egg som blir gytt på gytesubstratene som oftest blir benyttet for å samle egg fra berggylt stamfisk. Vi fant liten effekt av ARA på fekunditet, befruktning og klekking. Allikevel var det høy ARA gruppen som produserte egg med tilnærmet lik ARA nivå som det som er funnet i gonadene til vill fisk. ARA hadde en effekt på eggstørrelsen, så vi har en hypotese om at dette kan være en fordel for larvene. Dessverre mistet vi tilgang på nødvendig infrastruktur for å gjennomføre startfôring av larvene p.g.a. Covid-19 relaterte komplikasjoner. Gitt at gonader fra vill fisk har optimale ARA nivå, vil vi anbefale ARA nivå i fôr opp mot 5,6 % av totalt lipid.Kvalitetskriterier for rensefisk og effekten av stamfiskerernæring - CleanLifeCyclepublishedVersio
Utprøving av fem ulike Spironucleus salmonicida smittemodellar for post-smolt laks i sjøvatn - SpiroFri Pilotsmitteforsøk Våren 2023
Full text linkFem ulike smittemodellar for Spironucleus salmonicida, ein diplomonad parasitt knytt til alvorlege utbrot av spironukleose i norsk akvakultur er vurdert. Parasitten, isolert frå lesjonar hos infisert laks, vart dyrka i henhald til etablerte protokollar og deretter administrert til postsmolt laks ved hjelp av fem ulike metodar: bad, intraperitoneal injeksjon, oral intubasjon, anal intubasjon og kohabitasjon. Hovudmålet for forsøket var å fastslå kva modell som var best å nytte til smitte i sjøvatn i prosjektet SpiroFri.Utprøving av fem ulike Spironucleus salmonicida smittemodellar for post-smolt laks i sjøvatn - SpiroFri Pilotsmitteforsøk Våren 2023publishedVersio
Maternal intake of dietary protein from plant and animal sources and development of pharmacologically treated hypertension within 10 years after pregnancy
No full textpublishedVersio
The Local Turn in a Global Sea: Identifying Sustainability Trade-Offs in Regionalized Marine Aquaculture Systems
No full textMarine aquaculture, like the broader seafood industry, relies heavily on international trade and global supply chains for both production and sales. Recent global disruptions, including the COVID-19 pandemic, the Russian invasion of Ukraine, the conflicts in the Middle East, and trade tensions, have exposed the social and economic vulnerabilities inherent in a globalized production system. In response, these events have sparked growing interest in transitioning to localized and regional supply chain models. Calls to “buy national” and support domestic economies highlight this trend toward regionalization. This study explores the sustainability implications of regionalizing marine aquaculture by examining the four key segments of the supply chain. These are (1) upstream inputs and resources (2) aquaculture production (3) downstream added value-processing and (4) distribution–transportation. Potential benefits of regional production models include increased resilience to disruptions, lower transportation-related carbon emissions, and support for local economies. However, such models may also introduce trade-offs, including reduced production efficiency, supply and sales limitations, and implications for social, cultural, and governance structures. Our analysis reveals that the sustainability outcomes of regionalization are complex and context-dependent. It is influenced by the specific characteristics of existing supply chains and the regional contexts in which they operate. While regionalization may offer advantages in certain contexts, it does not guarantee improved sustainability. Thus, it is crucial to critically assess the assumption that regionalization inherently leads to improved sustainability outcomes. Proactive evaluation of these dynamics is essential to develop strategies that maximize benefits while addressing potential trade-offs.publishedVersio
Hazard characterization of the mycotoxins enniatins and beauvericin to identify data gaps and improve risk assessment for human health
No full textEnniatins (ENNs) and beauvericin (BEA) are cyclic hexadepsipeptide fungal metabolites which have demonstrated antibiotic, antimycotic, and insecticidal activities. The substantial toxic potentials of these mycotoxins are associated with their ionophoric molecular properties and relatively high lipophilicities. ENNs occur extensively in grain and grain-derived products and are considered a food safety issue by the European Food Safety Authority (EFSA). The tolerable daily intake and maximum levels for ENNs in humans and animals remain unestablished due to key toxicological and toxicokinetic data gaps, preventing full risk assessment. Aiming to find critical data gaps impeding hazard characterization and risk evaluation, this review presents a comprehensive summary of the existing information from in vitro and in vivo studies on toxicokinetic characteristics and cytotoxic, genotoxic, immunotoxic, endocrine, reproductive and developmental effects of the most prevalent ENN analogues (ENN A, A1, B, B1) and BEA. The missing information identified showed that additional studies on ENNs and BEA have to be performed before sufficient data for an in-depth hazard characterisation of these mycotoxins become available.Hazard characterization of the mycotoxins enniatins and beauvericin to identify data gaps and improve risk assessment for human healthpublishedVersionpublishedVersio
The surveillance and control program for bonamiosis and marteiliosis in European flat oysters,Ostrea edulis, in Norway in 2024
Full text linkThe surveillance program for the molluscan diseases bonamiosis and marteiliosis is carried out by the Institute of Marine Research according to a contract with the Norwegian Food Safety Authority. In 2024, flat oysters were sampled from three locations: an abandoned breed poll where oyster spat was previously produced and two fjord systems with larger populations of flat oysters. Samples were collected in May and October, to be able to detect Bonamia sp. and Marteilia sp. during the periods when the potential prevalence is highest. No abnormal mortality was observed during the surveillance. Bonamia ostreae / B. exitiosa and Marteilia refringens were not detected. Marteilia refringens Type O and M are now divided into two species: Marteilia refringens in flat oysters and Marteilia pararefringens in blue mussels. Blue mussels are therefore no longer considered susceptible hosts for M. refringens, but our research project shows that the related M. pararefringens is widespread in certain mussel populations along the South and West coasts of Norway. M. pararefringens can have a serious impact on blue mussel populations, and consideration should be given to listing the parasite on a national list of notifiable diseases. The process of obtaining and maintaining a disease-free status for marteiliosis and bonamiosis is discussed.The surveillance and control program for bonamiosis and marteiliosis in European flat oysters,Ostrea edulis, in Norway in 2024publishedVersio
Joint Russian Norwegian Arctic Fisheries Working Group (JRN-AFWG) Report 2025
Full text linkOn 30 March 2022 all Russian participation in ICES was temporally suspended. Althoughthe announcement of the suspension stressed the role of ICES as a “multilateral scienceorganization”, this suspension applied not only to research activities but also to the ICESwork providing fisheries advice for the sustainable management of fish stocks andecosystems. On 9 December 2024 Russia announced its intention to leave ICES by 9December 2025. As a result, since 2022 the ICES AFWG has provided advice only for saithe, coastal cod north, coastal cod south, and golden redfish. Northeast Arctic (NEA) cod, haddock, beaked redfish, Greenland halibut, and capelin assessments have beenconducted outside of ICES in a bilateral Joint Russian-Norwegian Working Group on ArcticFisheries (JRN-AFWG). Although this work has been conducted independently of ICES, the methodologies agreed at ICES benchmarks and agreed HCRs (Harvest Control Rules) have been followed in providing this advice. The chapter numbering in this report is not continuous (Chapter 2,5 and 7 are missing). This is done in order to be consistent with the chapter numbering in ICES AFWG reports. In 2025 we are giving advice for NEA cod and haddock. There is a 2-year advice for bothGreenland halibut and beaked redfish, with the next advice release planned for 2026. Thecapelin advice is conducted and released in the autumn via a separate report. The beakedredfish model is planned for a method revision prior to the next advice. We would note that both cod and haddock had TAC quota set above advice in 2025. Bothstocks are projected to increase provided the HCRs are followed. However, any further fishing above scientific advice would imperil the improvements for these stocks, and for NEA cod in particular would increase the risk of the stock falling below Blim.Joint Russian Norwegian Arctic Fisheries Working Group (JRN-AFWG) Report 2025publishedVersio