Browsing Brage IMR by Author "Karlsbakk, Egil"
Now showing items 21-40 of 46
-
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea
Hansen, Haakon; Alvestad, Anja Helene; MacKenzie, Ken; Darrud, Mari; Karlsbakk, Egil; Hemmingsen, Willy; Arneberg, Per (Peer reviewed; Journal article, 2020)Introduction Monogeneans of the genus Gyrodactylus were found on the gills of specimens of the bigeye sculpin Triglops nybelini Jensen, 1944 caught by trawl in the Barents Sea in January–February 2016. Methods Morphological ... -
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea
Hansen, Haakon; Alvestad, Anja Helene; MacKenzie, Ken; Darrud, Mari; Karlsbakk, Egil; Hemmingsen, Willy; Arneberg, Per (Peer reviewed; Journal article, 2020)Monogeneans of the genus Gyrodactylus were found on the gills of specimens of the bigeye sculpin Triglops nybelini Jensen, 1944 caught by trawl in the Barents Sea in January–February 2016. -
Health monitoring of wild anadromous salmonids in seawater in Norway
Madhun, Abdullah Sami; Isachsen, Cecilie Helen; Omdal, Linn Maren; Einen, Ann Cathrine Bårdsgjære; Wennevik, Vidar; Svåsand, Terje; Karlsbakk, Egil (Rapport fra Havforskningen;Nr. 17-2014, Working paper, 2014-05-01) -
Horizontal transmission of nervous necrosis virus between turbot Scophthalmus maximus and Atlantic cod Gadus morhua using cohabitation challenge
Korsnes, Kjetil; Karlsbakk, Egil; Nylund, Are; Nerland, Audun H. (Journal article; Peer reviewed, 2012-05-15)Experimental horizontal transmission of nervous necrosis virus (NNV) originating from halibut Hippoglossus hippoglossus was studied through cohabitation of intraperitoneally (i.p.) injected fish with uninfected fish for ... -
Infection dynamics and tissue tropism of Parvicapsula pseudobranchicola (Myxozoa: Myxosporea) in farmed Atlantic salmon (Salmo salar)
Nylund, Are; Hansen, Haakon; Brevik, Øyvind Jakobsen; Hustoft, Håvard; Markussen, Turhan; Plarre, Heidrun; Karlsbakk, Egil (Peer reviewed; Journal article, 2018) -
Kunnskapsstatus leppefisk : Utfordringer i et økende fiskeri
Espeland, Sigurd Heiberg; Nedreaas, Kjell Harald; Mortensen, Stein H.; Skiftesvik, Anne Berit; Agnalt, Ann-Lisbeth; Durif, Caroline M.F.; Harkestad, Lisbeth S.; Karlsbakk, Egil; Knutsen, Halvor; Thangstad, Trond; Jørstad, Knut Eirik; Bjordal, Åsmund; Gjøsæter, Jakob (Fisken og havet;7-2010, Research report, 2010-11-15)Over the past few years there has been a rapid increase in the use of wrasses as cleanerfish for sealice on salmon farms. During 2010, the landed catch of wrasse was 440 tons, more than twice the 2009 catch and nearly ten ... -
Making the best of lousy circumstances: The impact of salmon louse Lepeophtheirus salmonis on depth preference of sea trout Salmo trutta
Mohn, Agnes Marie; Vollset, Knut; Karlsbakk, Egil (Peer reviewed; Journal article, 2020)Sea trout are known for seeking out sources of freshwater to rid themselves of salmon lice. However, the effect of natural haloclines in fjords on parasite dynamics is not well understood. We tagged 48 naturally infested ... -
Miljøeffekter av torskeoppdrett
Svåsand, Terje; Bergh, Øivind; Dahle, Geir; Hamre, Lars Are; Jørstad, Knut Eirik; Karlsbakk, Egil; Korsnes, Kjetil; Taranger, Geir Lasse (Havforskningstema, Working paper, 2007) -
Molecular characterization of the myoliquefactive fish parasite kudoa mirabilis (Cnidaria, kudoidae) from se Indian Ocean and its phylogenetic relationship with the kudoa thyrsites species complex
Giulietti, Lucilla; Karlsbakk, Egil; Cipriani, Paolo; Shayo, Salome Daniel; Storesund, Julia Endresen; Levsen, Arne (Peer reviewed; Journal article, 2020)Myxosporean parasites of the genus Kudoa are fish parasites of great economic importance, as some species can affect the fish fillet quality by producing macroscopic cysts or generating post mortem myoliquefaction, commonly ... -
Molecular Genetic Analysis of Stomach Contents Reveals Wild Atlantic Cod Feeding on Piscine Reovirus (PRV) Infected Atlantic Salmon Originating from a Commercial Fish Farm
Glover, Kevin A.; Sørvik, Anne Grete Eide; Karlsbakk, Egil; Zhang, Zhiwei; Skaala, Øystein (Journal article; Peer reviewed, 2013-04-19)In March 2012, fishermen operating in a fjord in Northern Norway reported catching Atlantic cod, a native fish forming an economically important marine fishery in this region, with unusual prey in their stomachs. It was ... -
Molecular tools for the detection and identification of Ichthyobodo spp. (Kinetoplastida), important fish parasites
Isaksen, Trond Einar; Karlsbakk, Egil; Repstad, Oddvar; Nylund, Are (Journal article; Peer reviewed, 2012-07-21)Ichthyobodo spp. are ectoparasitic flagellates of fish that may cause disease (ichthyobodosis), a common problem affecting the aquaculture industry worldwide. Ichthyobodosis in farmed fish is often associated with a range ... -
Paranucleospora theridion (Microsporidia) infection dynamics in farmed Atlantic salmon Salmo salar put to sea in spring and autumn
Sveen, Silje; Øverland, Hanne; Karlsbakk, Egil; Nylund, Are (Journal article; Peer reviewed, 2012-10-10)The microsporidian Paranucleospora theridion (syn. Desmozoon lepeophtheirii) is a parasite of Atlantic salmon Salmo salar and also a hyperparasite of the salmon louse Lepeophtheirus salmonis. The parasite develops 2 types ... -
Patterns of Ichthyobodo necator sensu stricto infections on hatchery-reared Atlantic salmon Salmo salar in Norway
Isaksen, Trond E.; Karlsbakk, Egil; Sundnes, Gunnar; Nylund, Are (Journal article; Peer reviewed, 2010-02-17)Infection patterns with ectoparasitic flagellates belonging to the genus Ichthyobodo were studied in an Atlantic salmon Salmo salar (L.) hatchery in western Norway during an 11 mo period, from eyed eggs to smoltification. ... -
Potential disease interaction reinforced: double-virusinfected escaped farmed Atlantic salmon, Salmo salar L., recaptured in a nearby river
Madhun, Abdullah Sami; Karlsbakk, Egil; Isachsen, Cecilie Helen; Omdal, Linn Maren; Sørvik, Anne Grete Eide; Skaala, Øystein; Barlaup, Bjørn; Glover, Kevin (Journal article; Peer reviewed, 2014-01-27)The role of escaped farmed salmon in spreading infectious agents from aquaculture to wild salmonid populations is largely unknown. This is a case study of potential disease interaction between escaped farmed and wild fish ... -
Prevalence and genotypes of infectious salmon anaemia virus (ISAV) in returning wild Atlantic salmon (Salmo salar L.) in northern Norway
Madhun, Abdullah Sami; Mæhle, Stig; Wennevik, Vidar; Karlsbakk, Egil (Journal article; Peer reviewed, 2019) -
Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway
Madhun, Abdullah Sami; Isachsen, Cecilie Helen; Omdal Strandenes, Linn Maren; Einen, Ann Cathrine B.; Mæhle, Stig; Wennevik, Vidar; Niemelä, Eero; Svåsand, Terje; Karlsbakk, Egil (Journal article; Peer reviewed, 2018)Heart and skeletal muscle inflammation (HSMI) caused by piscine orthoreovirus (PRV) and pancreas disease (PD) caused by salmonid alphavirus (SAV) are among the most prevalent viral diseases of Atlantic salmon farmed in ... -
Redescription and phylogenetic position of Myxobolus ‘eglefini’ and Myxobolus platessae n. comb. (Myxosporea), parasites in the cartilage of some North Atlantic marine fishes, with notes on the phylogeny and classification of the Platysporina
Karlsbakk, Egil; Kristmundsson, Árni; Albano, Marco; Brown, Paul; Freeman, Mark A. (Peer reviewed; Journal article, 2017) -
Risikovurdering norsk fiskeoppdrett 2012
Asplin, Lars; Aure, Jan; Bannister, Raymond; Bjørn, Pål Arne; Boxaspen, Karin; Dahle, Geir; Ervik, Arne; Finstad, Bengt; Glover, Kevin A.; Grøsvik, Bjørn Einar; Hansen, Pia Kupka; Heino, Mikko; Vivian, Husa; Jansen, P. A.; Johnsen, Ingrid Askeland; Jørstad, Knut Eirik; Karlsbakk, Egil; Karlsen, Ørjan; Kristiansen, Tore S.; Kvamme, Bjørn Olav; Llinares, Rosa Maria Serra; Madhun, Abdullah Sami; van der Meeren, Terje; Mortensen, Stein; Morton, Craig; Nilsen, Rune; Otterå, Håkon; Patel, Sonal; Sæther, Bjørn-Steinar; Samuelsen, Ole Bent; Skaala, Øystein; Skår, Cecilie; Skilbrei, Ove; Stien, Lars Helge; Svåsand, Terje; Taranger, Geir Lasse; Uglem, Ingebrigt; Wennevik, Vidar (Fisken og havet, særnummer;2-2013, Research report, 2013-01-18)Havforskningsinstituttet har oppdatert risikovurderingen av miljøvirkninger av norsk fiskeoppdrett med ny kunnskap og nye data med fokus på matfiskoppdrett av laks – og har gjort en innledende vurdering av dyrevelferd i ... -
Risk assessment of the environmental impact of Norwegian Atlantic salmon farming
Taranger, Geir Lasse; Karlsen, Ørjan; Bannister, Raymond; Glover, Kevin; Husa, Vivian; Karlsbakk, Egil; Kvamme, Bjørn Olav; Boxaspen, Karin Kroon; Bjørn, Pål Arne; Finstad, Bengt; Madhun, Abdullah Sami; Morton, Hugh Craig; Svåsand, Terje (Journal article; Peer reviewed, 2014-09-02)Norwegian aquaculture has grown from its pioneering days in the 1970s to be a major industry. It is primarily based on culturing Atlantic salmon and rainbow trout and has the potential to influence the surrounding environment ... -
Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar)
Hansen, Haakon; Poppe, Trygve T; Markussen, Turhan; Karlsbakk, Egil (Journal article; Peer reviewed, 2015-04-10)Background: Parvicapsula pseudobranchicola (Myxozoa) causes widespread infections in farmed Atlantic salmon in northern Norway. Heavily infected salmon become runts, probably due to vision impairment or blindness. The salmon ...