Blar i forfatter "Siikavuopio, Sten Ivar"

Viser treff 1-10 av 10

    • En mulighetsstudie for økt vekst innen innlandsoppdrett 

      Winther, Ulf; Prestvik, Øyvind; Ulgenes, Yngve; Heide, Mats Augdal; Nilssen, Frode; Haug, Lise; Uhlig, Christian; Jensen, Hallvard; Siikavuopio, Sten Ivar; Sæther, Bjørn-Steinar (Research report; Forskningsrapport, 2010-06-29)
      SINTEF Fiskeri og havbruk har sammen med Bioforsk Nord og Nofuna Marked gjennomført en vurdering av mulighetene for økt vekst innen innlandsoppdrett i Norge. Følgende arter er vurdert: Røye, ørret, sik, regnbueørret, gjørs, abbor og lake. Studien gir en oversikt over innlandsoppdrett i Norge og i andre nordiske land. Mulighetene for utvikling av en innlandsoppdrettsnæring i Norge er ellers vurdert ...

    • Fatty acid profile of cooked leg meat and raw hepatopancreas of red king crab (Paralithodes camtschaticus) during three-month live holding without feeding at 5 and 10 °C 

      Lian, Federico; Siikavuopio, Sten Ivar; Harrison, Sabine M.; Vang, Birthe; Brunton, Nigel P.; Esaiassen, Margrethe; Lorentzen, Grete Elisabeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-06)
      The red king crab (RKC, Paralithodes camtschaticus) is a highly-valued decapod species. Typically, RKCs undergo a period of live holding (LH), often without feeding, in onshore facilities, allowing for flexible management before export to destination markets. This study aimed to (i) gain information on the fatty acid (FA) profile of the cooked leg meat and raw hepatopancreas obtained from RKC harvested ...

    • First observation of seasonal variations in the meat and co-products of the snow crab (Chionoecetes opilio) in the Barents Sea 

      Solstad, Runar Gjerp; Descomps, Alexandre; Siikavuopio, Sten Ivar; Karstad, Rasmus Tørnes; Vang, Birthe; Whitaker, Ragnhild Dragøy (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-24)
      The snow crab (<i>Chionoecetes opilio</i>), SC, is a newly established species in the Barents Sea. The snow crab fishery has established itself as a new and profitable industry in Norway in the last decade. The fishery started as a year-round fishery, without any information of possible seasonal variations in the quality of the product. In 2017 a total allowable catch was established by the Norwegian ...

    • Global economic drivers in the development of different industrial hubs in the European Arctic 

      Suopajärvi, Leena; Nygaard, Vigdis; Edvardsdóttir, AG; Iversen, Audun; Kyllönen, Katri-Maaria; Lesser, Pamela; Lindestav, Gun; Moioli, Sara; Nojonen, Matti; Olafsdottir, Ragnheidur; Bergström, D; Bjerke, Jarle W.; Bogadóttir, Rangheiour; Elomina, Jerbelle; Engen, Sigrid; Koivurova, Timo; Leppiaho, Toumas; Lynge-Pedersen, K; Rantala, Outi; Siikavuopio, Sten Ivar; Skum, Marja-Kristin; Tuulentie, Seija; Tømmervik, Hans (Research report; Forskningsrapport, 2022-03)
      This project report discusses global drivers affecting the development of key industries in the European Arctic (EA). Aquaculture is important for littoral states in the North, forestry and mining for northern Scandinavia, and tourism throughout the northern regions in the EA, and all are affected by globalization. Globalization is not a homogeneous, uniform phenomenon, but consists of various global ...

    • Green sea urchin (Strongylocentrotus droebachiensis,Müller) in aquaculture: the effects of environmental factors on gonad growth. 

      Siikavuopio, Sten Ivar (Doctoral thesis; Doktorgradsavhandling, 2009-10-30)
      Ved hjelp av eksperimentelle studier har en undersøkt effekten av ulike miljøfaktorer på gonadevekst hos Drøbak-kråkebolle i oppdrett. Dette inkluderer effekten av temperatur, størrelse, sesong, individtetthet og forskjellige vannkvalitetsparametre (O2, CO2, nitritt, ammoniakk) og håndtering på overlevelse, gonadevekst, fôrinntak og fôrutnyttelse. Optimal temperatur for gonadevekst hos voksne ...

    • Inclusion of photoautotrophic cultivated diatom biomass in salmon feed can deter lice 

      Eilertsen, Hans Christian; Elvevoll, Edel O.; Giæver, Ingeborg Hulda; Svenning, Jon Brage; Dalheim, Lars; Svalheim, Ragnhild Aven; Vang, Birthe; Siikavuopio, Sten Ivar; Dragøy, Ragnhild; Ingebrigtsen, Richard Andre; Hansen, Espen Holst; Hustad, Anette; Eilertsen, Karl-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-29)
      The aim of this study was to evaluate the potential of diatom (microalgae) biomass as a lice-reducing ingredient in salmon feed. The original hypothesis was based on the fact that polyunsaturated aldehydes (PUAs), e.g. 2-trans, 4-trans decadenial (A3) produced by diatoms can function as grazing deterrents and harm copepod development. Salmon lice (Lepeophtheirus salmonis) is a copepod, and we intended ...

    • Mikroalger i fôr, ny løsning for å redusere lusepåslag på laks – Faglig sluttrapport 

      Hustad, Anette; Vang, Birthe; Eilertsen, Hans Christian; Siikavuopio, Sten Ivar; Sæther, Bjørn-Steinar; Svalheim, Ragnhild Aven; Hansen, Espen Holst; Svenning, Jon Brage; Kousoulaki, Katerina; Whitaker, Ragnhild (Research report; Forskningsrapport, 2020-05)
      I dette prosjektet har vi testet ut en hypotese om at ved å erstatte vegetabilske oljer i fôr til oppdrettslaks med marine oljer, vil man kunne redusere lusepåslag hos laks. Vi har fôret laks med fire ulike fôr, der proteininnholdet er det samme, men oljen er variert. De ulike fôrene vi brukte var kontrollfôr som var standardfôr med vegetabilsk olje, og tre ulike testfôr der vegetabilsk olje ble ...

    • Temperature selection and the final thermal preferendum of snow crab (Chionoecetes opilio, Decapoda) from the Barents Sea 

      Siikavuopio, Sten Ivar; Bakke, Snorre; Sæther, Bjørn-Steinar; Thesslund, Tina; Christiansen, Jørgen Schou (Journal article; Tidsskriftartikkel, 2019-08-09)
      The snow crab (<i>Chionoecetes opilio</i>) is an invasive species new to the Barents Sea that expands its geographic range by larval drift and adult migration. To evaluate the potential spreading of the species in the Barents Sea, we investigated temperature selection and the final thermal preferendum (FTP) of nine adult males in a free choice horizontal temperature gradient (~ 1.0–5.5 °C) for 24 ...

    • Thermal behaviour and the prospect spread of an invasive benthic top predator onto the Euro-Arctic shelves 

      Christiansen, Jørgen Schou; Sparboe, Maria; Sæther, Bjørn-Steinar; Siikavuopio, Sten Ivar (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-18)
      Aim A focal task for invasion biology is to identify the environmental variables and biological traits that set and underpin realised and potential habitats of invasive species. Ecophysiology provides powerful empirical knowledge that connects theory with natural phenomena and may improve the accuracy of species distribution modelling. We used the introduced Kamchatka red king crab Paralithodes ...

    • Thermal behaviour of edible crab Cancer pagurus Linnaeus, 1758 in coastal Norway 

      Bakke, Snorre; Siikavuopio, Sten Ivar; Christiansen, Jørgen Schou (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-26)
      Ocean warming drives latitudinal shifts in the distribution of ectotherm species. The rate and magnitude of such shifts are constrained by physiology and behavioural thermoregulation. Here, we investigated the thermal preference and lower critical temperature (CTmin) in female edible crab <i>Cancer pagurus</i>, a decapod crustacean with an ongoing northward dispersal along the Norwegian coast. The ...