Browsing Department of Biological Sciences by Author "Brevik, Øyvind Jakobsen"
Now showing items 1-13 of 13
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Concurrent jellyfish blooms and tenacibaculosis outbreaks in Northern Norwegian Atlantic salmon (Salmo salar) farms
Småge, Sverre Bang; Brevik, Øyvind Jakobsen; Frisch, Kathleen Marie; Watanabe, Kuninori; Duesund, Henrik; Nylund, Are (Peer reviewed; Journal article, 2017-11-02)Tenacibaculosis is an increasing problem in the Norwegian Atlantic salmon aquaculture industry causing significant economic losses. In September 2015, two separate outbreaks of suspected tenacibaculosis occurred at two ... -
Detection of the myxosporean parasite Parvicapsula pseudobranchicola in Atlantic salmon (Salmo salar L.) using in situ hybridization (ISH)
Markussen, Turhan; Agusti-Ridaura, Celia; Karlsbakk, Egil; Nylund, Are; Brevik, Øyvind Jakobsen; Hansen, Haakon (Peer reviewed; Journal article, 2015-02-15)Background: Parvicapsula pseudobranchicola is a marine myxosporean parasite infecting farmed Atlantic salmon (Salmo salar). A major site for the parasite is the pseudobranch, which may be destroyed in heavily infected fish. ... -
Experimental induction of mouthrot in Atlantic salmon smolts using Tenacibaculum maritimum from Western Canada
Frisch, Kathleen Marie; Småge, Sverre Bang; Vallestad, Camilla; Brevik, Øyvind Jakobsen; Klevan, Are; Olsen, Rolf Hetlelid; Sjaatil, Stine; Gauthier, David; Brudeseth, Bjørn Erik; Nylund, Are (Peer reviewed; Journal article, 2018-08)Mouthrot, or bacterial stomatitis, is a disease which mainly affects farmed Atlantic salmon, (Salmo salar, L.), smolts recently transferred into salt water in both British Columbia (BC), Canada, and Washington State, USA. ... -
First isolation, identification and characterisation of Tenacibaculum maritimum in Norway, isolated from diseased farmed sea lice cleaner fish Cyclopterus lumpus L
Småge, Sverre Bang; Frisch, Kathleen; Brevik, Øyvind Jakobsen; Watanabe, Kuninori; Nylund, Are (Peer reviewed; Journal article, 2016-06-23)The use of cleaner fish as biological controls of salmon lice (Lepeophtheirus salmonis) has increased exponentially in the last decade in Norwegian Atlantic salmon (Salmo salar) production. This alternative to chemical ... -
Genotyping of Tenacibaculum maritimum isolates from farmed Atlantic salmon in Western Canada
Frisch, Kathleen Marie; Småge, Sverre Bang; Brevik, Øyvind Jakobsen; Duesund, Henrik; Nylund, Are (Peer reviewed; Journal article, 2018-01)Mouthrot infections (bacterial stomatitis) have a significant impact on the Atlantic salmon aquaculture industry in Western Canada due to economic losses and fish welfare. Bacteria isolated from lesions in the field have ... -
Induction of tenacibaculosis in Atlantic salmon smolts using Tenacibaculum finnmarkense and the evaluation of a whole cell inactivated vaccine
Småge, Sverre Bang; Frisch, Kathleen Marie; Vold, Vidar; Duesund, Henrik; Brevik, Øyvind Jakobsen; Olsen, Rolf Hetlelid; Sjaatil, Stine; Klevan, Are; Brudeseth, Bjørn; Watanabe, Kuninori; Nylund, Are (Peer reviewed; Journal article, 2018-10)Tenacibaculosis, an ulcerative disease characterised by skin lesions, mouth erosion, frayed fins and tail rot, is a significant fish welfare issue in marine aquaculture worldwide. The disease is a concern to the Atlantic ... -
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, 2018-01-06)Background The myxosporean parasite Parvicapsula pseudobranchicola commonly infects farmed Atlantic salmon in northern Norway. Heavy infections are associated with pseudobranch lesions, runting and mortality in the salmon ... -
Multiple-locus, variable number of tandem repeat analysis (MLVA) of the fish-pathogen Francisella noatunensis
Brevik, Øyvind Jakobsen; Ottem, Karl Fredrik; Nylund, Are (Peer reviewed; Journal article, 2011-01-24)Background: Since Francisella noatunensis was first isolated from cultured Atlantic cod in 2004, it has emerged as a global fish pathogen causing disease in both warm and cold water species. Outbreaks of francisellosis ... -
A new intracellular bacterium, Candidatus Similichlamydia labri sp. nov. (Chlamydiaceae) producing epitheliocysts in ballan wrasse, Labrus bergylta (Pisces, Labridae)
Steigen, Andreas L; Karlsbakk, Egil; Plarre, Heidrun; Watanabe, Kuninori; Øvergård, Aina-Cathrine; Brevik, Øyvind Jakobsen; Nylund, Are (Peer reviewed; Journal article, 2015-03)Certain wrasse species (Labridae) are used as cleaner fish in salmon farms on the Norwegian coast, reducing salmon louse intensities. The pathogen repertoire of wrasse in Norway is poorly known, and the objective of the ... -
Pathology of experimentally induced mouthrot caused by Tenacibaculum maritimum in Atlantic salmon smolts
Frisch, Kathleen Marie; Småge, Sverre Bang; Johansen, Renate; Duesund, Henrik; Brevik, Øyvind Jakobsen; Nylund, Are (Peer reviewed; Journal article, 2018-11-01)Mouthrot, caused by Tenacibaculum maritimum is a significant disease of farmed Atlantic salmon, Salmo salar on the West Coast of North America. Smolts recently transferred into saltwater are the most susceptible and affected ... -
Phenotypic and genetic characterization of Piscirickettsia salmonis from Chilean and Canadian salmonids
Otterlei, Alexander; Brevik, Øyvind Jakobsen; Jensen, Daniel; Duesund, Henrik; Sommerset, Ingunn; Frost, Petter; Mendoza, Julio; McKenzie, Peter; Nylund, Are; Apablaza, Patricia (Peer reviewed; Journal article, 2016-03-15)Background. The study presents the phenotypic and genetic characterization of selected P. salmonis isolates from Atlantic salmon and rainbow trout suffering from SRS (salmonid rickettsial septicemia) in Chile and in Canada. ... -
Tenacibaculum finnmarkense sp. nov., a fish pathogenic bacterium of the family Flavobacteriaceae isolated from Atlantic salmon
Småge, Sverre Bang; Brevik, Øyvind Jakobsen; Duesund, Henrik; Ottem, Karl Fredrik; Watanabe, Kuninori; Nylund, Are (Peer reviewed; Journal article, 2016-02)A novel Gram-stain negative, aerobic, non-flagellated, rod-shaped gliding bacterial strain, designated HFJT, was isolated from a skin lesion of a diseased Atlantic salmon (Salmo salar L.) in Finnmark, Norway. Colonies were ... -
Variable Number of Tandem Repeats (VNTR) analysis of Flavobacterium psychrophilum from salmonids in Chile and Norway
Apablaza, Patricia; Brevik, Øyvind Jakobsen; Mjøs, Svein Are; Valdebenito, Samuel; Ilardi, Pedro; Battaglia, Juan; Dalsgaard, Inger; Nylund, Are (Peer reviewed; Journal article, 2015-07-14)Background Flavobacterium psychrophilum causes serious fish diseases such RTFS and BCWD, affecting the aquaculture industry worldwide. Commercial vaccines are not available and control of the disease depends on the use of ...