Browsing Bergen Open Research Archive by Author "Karlsbakk, Egil Erlingsson"
Now showing items 1-15 of 15
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Characterization of Pseudoterranova ceticola (Nematoda: Anisakidae) larvae from meso/bathypelagic fishes off Macaronesia (NW Africa waters)
Bao, Miguel; Olsen, Kaja M.; Levsen, Arne; Cipriani, Paolo; Giulietti, Lucilla; Storesund, Julia Endresen; García-Seoane, Eva; Karlsbakk, Egil Erlingsson (Journal article; Peer reviewed, 2022)The genus Pseudoterranova includes parasite species of cetaceans and pinnipeds. The third stage larva (L3) of seal-infecting species occur in second intermediate or paratenic fish hosts mainly in neritic waters. This study ... -
Distribution of Kudoa thyrsites (Cnidaria, Myxozoa) myoliquefactive stages in Northeast Atlantic mackerel (Scomber scombrus) inferred from qPCR and histology
Giulietti, Lucilla; Johansen Nedberg, Heidi; Karlsbakk, Egil Erlingsson; Marathe, Nachiket Prakash; Storesund, Julia Endresen; Mæhle, Stig; Fiksdal, Ingrid Uglenes; Ghebretnsae, Dawit Berhe; Levsen, Arne (Journal article; Peer reviewed, 2022)Kudoa thyrsites is a myxosporean parasite (Cnidaria, Myxozoa) that infects the skeletal and cardiac muscle of Northeast Atlantic (NEA) mackerel (Scomber scombrus). Heavy infections are associated with post-mortem myoliquefaction ... -
The evolving story of catadromy in the European eel (Anguilla anguilla)
Durif, Caroline; Arts, M.; Bertolini, F.; Cresci, Alessandro; Daverat, F.; Karlsbakk, Egil Erlingsson; Koprivnikar, J.; Moland, Even; Olsen, Esben Moland; Parzanini, C.; Power, M.; Rohtla, Mehis; Skiftesvik, Anne Berit; Thorstad, Eva Bonsak; Vøllestad, Leif Asbjørn; Browman, Howard (Journal article; Peer reviewed, 2023)Anguillid eels were once considered to be the classic example of catadromy. However, alternative life cycles have been reported, including skipping the freshwater phase and habitat shifting between fresh, brackish, and ... -
First identification of mycobacteriosis in Atlantic mackerel (Scomber scombrus)
Sandlund, Nina; Skår, Cecilie Kristin; Karlsbakk, Egil Erlingsson (Journal article; Peer reviewed, 2023)Mycobacterium infection in fish is a well-known disease problem globally, mainly in the farming of ornamental fish or fish for food. Less is known about the prevalence, distribution and the effects such infections have on ... -
Growth characteristics and morphology of Paramoeba perurans from Atlantic salmon Salmo salar L. and ballan wrasse Labrus bergylta in Norway
Blindheim, Steffen Hageselle; Andersen, Linda; Trösse, Christiane; Karlsbakk, Egil Erlingsson; Nylund, Are (Journal article; Peer reviewed, 2023)Background Paramoeba perurans is the causative agent of amoebic gill disease (AGD) in Atlantic salmon Salmo salar L. and many other farmed marine fish species worldwide. The first cases of AGD in Norway were reported in ... -
Hidden in the fog: Morphological and molecular characterisation of Derogenes varicus sensu stricto (Trematoda, Derogenidae) from Sweden and Norway, and redescription of two poorly known Derogenes species
Bouguerche, Chahinez; Huston, Daniel C.; Cribb, Thomas H.; Karlsbakk, Egil Erlingsson; Ahmed, Mohammed; Holovachov, Oleksandr (Journal article; Peer reviewed, 2023)Derogenes varicus (Müller, 1784) is widely reported as a trematode with exceptionally low host specificity and a wide, bipolar distribution. However, several recent studies have suggested that D. varicus represents a species ... -
High prevalence of Ichthyophonus sp. infections in Northeast Atlantic mackerel (Scomber scombrus)
Storesund, Julia Endresen; Nylund, Caroline Da Silva; Karlsbakk, Egil Erlingsson; Giulietti, Lucilla; Bao, Miguel; Cipriani, Paolo; Levsen, Arne (Journal article; Peer reviewed, 2022) -
The infection cycle of Marteilia pararefringens in blue mussels, Mytilus edulis, in a heliothermic marine oyster lagoon in Norway.
Bøgwald, Mats; Skår, Cecilie Kristin; Karlsbakk, Egil Erlingsson; Alfjorden, Anders; Feist, Stephen W.; Bass, David; Mortensen, Stein (Journal article; Peer reviewed, 2022)Agapollen is a traditional heliothermic marine oyster lagoon in western Norway, representing the northernmost site of any Marteilia sp. protists detected in Europe. The semi-closed lagoon is a unique site to study the life ... -
Long-term investigation of the ‘soft flesh’ condition in Northeast Atlantic mackerel induced by the myxosporean parasite Kudoa thyrsites (Cnidaria, Myxozoa): Temporal trends and new molecular epidemiological observations
Giulietti, Lucilla; Karlsbakk, Egil Erlingsson; Cipriani, Paolo; Bao Dominguez, Miguel; Storesund, Julia Endresen; Marathe, Nachiket; Levsen, Arne (Journal article; Peer reviewed, 2022)Northeast Atlantic (NEA) mackerel (Scomber scombrus, Scombridae) represents an economically important target for the Norwegian pelagic fishing industry. Despite the commercial significance of NEA mackerel, little is known ... -
Most of the escaped farmed salmon entering a river during a 5-year period were infected with one or more viruses
Madhun, Abdullah Sami; Karlsbakk, Egil Erlingsson; Skaala, Øystein; Solberg, Monica Favnebøe; Wennevik, Vidar; Harvey, Alison C.; Meier, Sonnich; Andersen-Fjeldheim, Per Tommy; Andersen-Fjeldheim, Kaja Christine; Glover, Kevin Alan (Journal article; Peer reviewed, 2024)Disease interactions between farmed and wild populations have been poorly documented for most aquaculture species, in part due to the complexities to study this. Here, we tested 567 farmed Atlantic salmon escapees, captured ... -
A novel protist parasite, Salmoxcellia vastator n. gen., n. sp. (Xcelliidae, Perkinsozoa), infecting farmed salmonids in Norway
Karlsbakk, Egil Erlingsson; Nystøyl, Cecilie Flatnes; Plarre, Heidrun; Nylund, Are (Journal article; Peer reviewed, 2021)Background In Norway, x-cell parasites associated with disease in farmed salmonids have been known as a rare phenomenon for two decades. These parasites cause systemic infections in farmed rainbow trout (Oncorhynchus ... -
Occurrence of salmonid alphavirus and piscine orthoreovirus-1 infections in migrating salmon (Salmo salar L.) post-smolt in western Norway
Madhun, Abdullah Sami; Nilsen, Rune; Barlaup, Bjørn Torgeir; Karlsen, Ørjan; Karlsbakk, Egil Erlingsson (Journal article; Peer reviewed, 2023)Viral diseases are a serious problem in Atlantic salmon (Salmo salar L.) farming in Norway, often leading to reduced fish welfare and increased mortality. Disease outbreaks in salmon farms may lead to spread of viruses to ... -
Post-mortem ‘soft flesh’ in three commercial fish species from off Atlantic Morocco associated with the myxosporean parasites Kudoa thyrsites and K. encrasicoli (Myxozoa)
Giulietti, Lucilla; Benallal, Mohamed Reda; Cipriani, Paolo; Bao Dominguez, Miguel; Karlsbakk, Egil Erlingsson; Storesund, Julia Endresen; Levsen, Arne (Journal article; Peer reviewed, 2024)Small pelagic fishes represent one of the most important food resources off the Northwest coast of Africa. Despite their economic significance, little is known about the infections with flesh invading myxosporean parasites ... -
Resurrection of genus Phocanema Myers, 1959, as a genus independent from Pseudoterranova Mozgovoĭ, 1953, for nematode species (Anisakidae) parasitic in pinnipeds and cetaceans, respectively
Bao, Miguel; Giulietti, Lucilla; Levsen, Arne; Karlsbakk, Egil Erlingsson (Journal article; Peer reviewed, 2023)Species of the genus Pseudoterranova, infect kogiid cetaceans and pinnipeds. However, there is mounting molecular evidence that those from cetaceans and pinnipeds are not congeneric. Here, we provide further evidence of ... -
The salmon louse genome: Copepod features and parasitic adaptations
Skern-Mauritzen, Rasmus; Malde, Ketil; Eichner, Christiane; Dondrup, Michael; Furmanek, Tomasz; Besnier, Francois; Komisarczuk, Anna Zofia; Nuhn, Michael; Dalvin, Sussie; Edvardsen, Rolf Brudvik; Klages, Sven; Huettel, Bruno; Stueber, Kurt; Grotmol, Sindre; Karlsbakk, Egil Erlingsson; Kersey, Paul; Leong, Jong S; Glover, Kevin Alan; Reinhardt, Richard; Lien, Sigbjørn; Jonassen, Inge; Koop, Ben F; Nilsen, Frank (Journal article; Peer reviewed, 2021)Copepods encompass numerous ecological roles including parasites, detrivores and phytoplankton grazers. Nonetheless, copepod genome assemblies remain scarce. Lepeophtheirus salmonis is an economically and ecologically ...