Stein Mortensen
Arbeidsområde
Seniorforsker, 1183
Utdannet mikrobiolog, Dr. scient, Universitetet i Bergen
Sykdommer og helse hos skjell, skjellbiologi og -anatomi, fiskesykdommer, smittespredning i oppdrett.
Forfatter av lærebøker og popularisering av fagstoff med særlig fokus på marinbiologi, økologi, fiske, fangst oppdrett og produksjon og bruk av sjømat.
Publikasjoner
Vitenskapelige artikler (NVI)
2025
Working Group on Pathology and Diseases of Marine Organisms (WGPDMO; outputs from 2024 meeting).
ICES Scientific Reports
2024
Genome-Wide Population Structure in a Marine Keystone Species, the European Flat Oyster (Ostrea edulis)
Molecular Ecology
2024
First detection of Marteilia pararefringens in Mytilus trossulus
Diseases of Aquatic Organisms
159
p. 209-214
2024
First detection of Marteilia pararefringens in Mytilus trossulus
Diseases of Aquatic Organisms
159
p. 209-214
2024
Marteilia pararefringens infections are more frequent than revealed by the Norwegian surveillance programme, highlighting the need for its improvement
Diseases of Aquatic Organisms
158
p. 157-172
2022
Infection cycle of Marteilia pararefringens in blue mussels Mytilus edulis in a heliothermic marine oyster lagoon in Norway
Diseases of Aquatic Organisms
148
p. 153-166
2021
Improved high throughput protocol for targeting eukaryotic symbionts in metazoan and eDNA samples
Molecular Ecology Resources
2020
Cosmopolitan Distribution of Endozoicomonas-Like Organisms and Other Intracellular Microcolonies of Bacteria Causing Infection in Marine Mollusks
Frontiers in Microbiology
11
p. 1-12
2019
Evaluation of large-scale marking methods in farmed salmonids for tracing purposes: Impact on fish welfare
Reviews in Aquaculture
2018
Marteilia refringens and Marteilia pararefringens sp. nov. are distinct parasites of bivalves and have different European distributions
Parasitology
145
p. 1483-1492
2017
Genetic analysis of goldsinny wrasse reveals evolutionary insights into population connectivity and potentialevidence of inadverent translocationvia aquaculture.
ICES Journal of Marine Science
74
p. 2135-2147
2017
Effects of a bio-invasion of the pacific oyster, crassostrea gigas (Thunberg, 1793) in five shallow water habitats in scandinavia
Management of Biological Invasions
8
p. 543-552
2017
High nervous necrosis virus (NNV) diversity in wild wrasse (Labridae) in Norway and Sweden
Diseases of Aquatic Organisms
126
p. 43-50
2017
From pedal to filter feeding: Ctenidial organogenesis and implications for feeding in the postlarval freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758)
Journal of molluscan studies
83
p. 36-42
2016
Development of SNP and microsatellite markers for goldsinny wrasse (Ctenolabrus rupestris) from ddRAD sequencing data
Conservation Genetics Resources
8
p. 201-206
2016
Summer mortalities and detection of ostreid herpesvirus microvariant in Pacific oyster Crassostrea gigas in Sweden and Norway
Diseases of Aquatic Organisms
117
p. 171-176
2015
Bruk av rensefisk i matfiskoppdrett
Fisken og Havet, Særnummer
p. 146-156
2014
Wrasse (Labridae) as cleaner fish in salmonid aquaculture - The Hardanger fjord as a case study
Marine Biology Research
10
p. 289-300
2013
Hemisk neoplasi hos norsk flatøsters, Ostrea edulis
Norsk Veterinærtidsskrift
125
p. 438-442
2012
Impact of an icy winter on the Pacific oyster (Crassostrea gigas Thunberg, 1793) populations in Scandinavia
Aquatic Invasions
7
p. 433-440
2012
Fate of Francisella noatunensis, a pathogen of Atlantic cod Gadus morhua, in blue mussels Mytilus edulis
Diseases of Aquatic Organisms
98
p. 63-72
2010
Massive settlements of the Pacific oyster, Crassostrea gigas, in Scandinavia
Biological Invasions
12
p. 1453-1458
2010
Massive settlements of the Pacific oyster, Crassostrea gigas, in Scandinavia
Biological Invasions
12
p. 1145-1152
2010
Massive settlements of the Pacific oyster, Crassostrea gigas, in Scandinavia
Biological Invasions
12
p. 1145-1152
2010
Horizontal movements of simulated escaped farmed Atlantic salmon (Salmo salar) in a western Norwegian fjord
ICES Journal of Marine Science
67
p. 1206-1215
2008
Gonad development and spawning in one and two year old mussels (Mytilus edulis) from Western Norway
Journal of the Marine Biological Association of the United Kingdom
88
p. 1465-1473
2008
Phylogenetic and morphological characterisation of the green algae infesting blue mussel Mytilus edulis in the North and South Atlantic oceans
Diseases of Aquatic Organisms
81
p. 231-240
2008
Gonad development and spawning in one and two year old mussels (Mytilus edulis) from Western Norway
Journal of the Marine Biological Association of the United Kingdom
88
p. 1465-1473
2008
Vibrio tapetis-like strain isolated from introduced Manila clams Ruditapes philippinarum showing symptoms of brown ring disease in Norway
Diseases of Aquatic Organisms
81
p. 153-161
2008
Vibrio tapetis-like strain isolated from introduced Manila clams Ruditapes philippinarum showing symptoms of brown ring disease in Norway
Diseases of Aquatic Organisms
81
p. 153-161
2006
"Eyes wide shut" - A critical view of aquaculture health management and risk factors in the "real world"
Bulletin of The European Association of Fish Pathologists
26
p. 2-6
2006
Immunohistochemistry of great scallop Pecten maximus larvae experimentally challenged with pathogenic bacteria
Diseases of Aquatic Organisms
69
p. 163-173
2005
Picoeucaryot alga infecting blue mussel Mytilus edulis in southern Norway
Diseases of Aquatic Organisms
69
p. 205-210
2004
Sensory, Histological, and Bacteriological Changes in Flat Oysters, Ostrea edulis L., during Different Storage Conditions
Journal of Food Science
69
p. 205-210
2000
Mortality of scallop spat in cultivation, infested with tube dwelling bristle worms, Polydora sp
Aquaculture International
8
p. 267-271
Annet tidsskriftbidrag
2024
Et steg i feil retning
Tvedestrandposten
2023
I Rogaland er det fremdeles håp for flatøstersen
Stavanger Aftenblad
2014
Østerselskere - besinn dere
Agderposten
p. 18-18
Faglige foredrag
2020
Nile Red and polarised light for visualization of microplastics in mussels (Mytilus spp.)
2018
Screening for pathogens in wild goldsinny wrasse (Ctenolabrus rupestris), an important cleaner fish in Norwegian aquaculture
2018
Problemstillinger ved bruk av vill leppefisk - sykdom og helse
2018
Marteilia pararefringens in blue mussels, Mytilus edulis, in Scandinavia. A traditional "oyster poll" as a study site.
2017
Hvorfor forsvinner blåskjellene?
2016
Fiske, transport og bruk av leppefisk i oppdrettsnæringen - mulige påvirkninger på økosystemet.
2016
Status for stillehavsøsters i Norge
2016
Hva med sykdommer hos stillehavsøsters?
2015
”Stillehavsøsters- kjærkommen gjest eller et fiendtlig angrep?”
2015
”Stillehavsøsters- kjærkommen gjest eller et fiendtlig angrep?”
2015
Growth, reproduction and recruitment of the pacific oysters (Crassostrea gigas) in an invasion front.
2015
Første funn av østers herpesvirus (OsHV-µvar) i forbindelse med sommerdødelighet av stillehavsøsters, Crassostrea gigas, i Norge.
2015
Crassostrea gigas-situation in Scandinavia
2014
Hardangerfjorden - ein føresetnad for velferda i hardanger
2014
Fangst, transport og bruk av vill leppefisk. Miljøeffekter, sykdommer og smittespredningsrisiko - risikoanlyse eller kost-nytteverdi?
2013
Biologi, helse og velferd hos leppefisk
2011
Fangsting og bruk av villfanget leppefisk – innenfor bærekraftige rammer?
Poster
2021
TEMPERATURE DEVELOPMENT IN PACIFIC OYSTER (Crassostrea gigas) UNDER EVERYDAY FOOD PREPARATION HEAT TREATMENTS – IMPLICATIONS FOR NOROVIRUS INACTIVATION
2019
Hurdles and possibilities for management of the invasive Pacific oyster in Scandinavia using small-scale fisheries.
2012
”How important is water temperature for an innovation on the coast of Norway?”
Rapporter og avhandlinger
2025
The surveillance and control program for bonamiosis and marteiliosis in European flat oysters,Ostrea edulis, in Norway in 2024
Rapport fra havforskningen
2024
Liste over forvaltningsrelevante naturenheter - Oppfølgende informasjon til rapporten "Forvaltningsrelevante naturenheter i sjø"
Rapport fra havforskningen
2024
The surveillance and control program for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis in 2023
Rapport fra havforskningen
2023
Kartlegging av østersbestander i Rogaland i 2021 og 2023 - innsamling av data som grunnlag for bestandsforvaltning
Rapport fra havforskningen
2023
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2022
2022
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2021
2022
Alien marine species in Norway - Mapping, monitoring and assessment of vectors for introductions
2022
Metodikk for kartlegging og overvåkning av fremmede marine arter i Norge - Forslag til nasjonalt program
2022
Stillehavsøsters i Norden. Datainnsamling og bestandsvurderinger som grunnlag for forvaltning og høsting av nordiske bestander av stillehavsøsters, Crassostrea gigas
2022
Kunnskapsstøtte om miljøeffekter av kobber. Delrapport I
2021
Towards a sustainable fishery and use of cleaner fish in salmonid aquaculture. Challenges and opportunities
2021
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2020
2020
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2019
2020
Summarizing the screening for Bonamia ostreae in Norwegian populations of flat oysters, Ostrea edulis
2019
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2018
2018
Risikorapport norsk fiskeoppdrett 2018
2018
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2017
2017
Undersøkelse av elvemuslinger, Margaritfera margaritifera, i forbindelse med dødelighet i bestanden i Haukåselven, Åsane, høsten 2017
2017
The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2016
2017
Meldinger om blåskjell som er forsvunnet – oppsummering for 2016
2017
Risk of negative effects on the welfare of dogs associated with being housed outdoors or used for sled dog racing. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety.
2017
Risk assessment of fish health associated with the use of cleaner fish in aquaculture. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food and Environment
2016
Risk assessment on import of Australian redclaw crayfish to Norway. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2016
Risk assessment on welfare in turkeys. Opinion of the Panel of Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2016
Risk assessment of marking and tracing methods with regards to the welfare of farmed salmonids. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2016
Risk assessment of marking and tracing methods with regards to the welfare of farmed salmonids. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2015
Scientific Opinion on factors relevant for listing infectious diseases of aquatic animals. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2015
”Studie av mulige interraksjoner mellom fremmende arter og Europeisk flatøsters (Ostrea edulis L.) i Aust-Agder”
2015
Store mengder stillehavsøsters dør av herpesvirus.
2014
Comparison of organic and conventional food and food production. Part II: Animal health and welfare in Norway
2014
Risk assessment of fish health and welfare in fresh water production systems for rainbow trout, brown trout and Arctic char. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2014
Risk assessment of amoebic gill disease. Opinion of the Panel of Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety
2014
Risk assessment of amoebic gill disease
2014
Risikovurdering norsk fiskeoppdrett 2013
2013
Risk assessment concerning the welfare of certain free-ranging wild mammals and birds subjected to marking.
2013
Risikovurdering norsk fiskeoppdrett 2012
2012
Risk Assessment of Recirculation Systems in Salmonid Hatcheries
2012
Helsestudier av østers. Rapport fra prosjekt 10190 Sykdomskontroll skjell
2011
Risikovurdering - Dyrevelferd ved hold av visse arter som familie- og hobbydyr. Uttalelse fra Faggruppe for dyrehelse og dyrevelferd i Vitenskapskomiteen for mattrygghet
2011
Risikovurdering knyttet til myndighetenes ansvar for bekjempelse av dyresjukdommer hos landdyr. Uttalelse fra Faggruppe for dyrehelse og dyrevelferd i Vitenskapskomiteen for mattrygghet
2010
Risikovurdering knyttet til bruk av gass, slag mot hode og strøm til bedøving av fisk. Uttalelse fra Faggruppe for dyrehelse og dyrevelferd i Vitenskapskomiteen for mattrygghet
2010
Hvorfor dør leppefisken i merdene?
2010
Kunnskapsstatus leppefisk Utfordringer i et økende fiskeri
2002
Kvalitetsvariasjoner hos dyrkede blåskjell
1993
Commercially exploited bivalve molluscs in Norway : their health status and potential role as vectors of the fish pathogenic infectious pancreatic necrosis virus (IPNV)
Nettrapporter
Nettrapporter
- The surveillance and control program for bonamiosis and marteiliosis in European flat oysters,Ostrea edulis, in Norway in 2024
- Liste over forvaltningsrelevante naturenheter
- The surveillance and control program for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis in 2023
- Kartlegging av østersbestander i Rogaland i 2021 og 2023 - innsamling av data som grunnlag for bestandsforvaltning
- The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2022
- Kunnskapsstøtte om miljøeffekter av kobber
- Metodikk for kartlegging og overvåkning av fremmede marine arter i Norge
- Alien marine species in Norway
- The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2021
- The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2020
- The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2019
- Summarizing the screening for Bonamia ostreae in Norwegian populations of flat oysters, Ostrea edulis.
- The surveillance and control programme for bonamiosis and marteiliosis in European flat oysters, Ostrea edulis, and blue mussels, Mytilus sp. in Norway in 2018
Nyheter
Nyheter
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- (21.01.2025) Vil verne norske flatøstersbestander
- (19.12.2023) I Rogaland er det fremdeles håp for flatøstersen
- (13.11.2023) Østers fra Rogaland kan brukes for å hjelpe syke skjell i Europa
- (07.07.2023) Havforskerne har laget sitt eget feltlaboratorium for blåskjell på Bømlo
- (30.03.2022) Meld fra om du ser dette
- (21.03.2022) Stillehavsøstersen sprer seg i Norden – hvordan bør den håndteres?
- (16.02.2022) Har samlet kunnskap om rensefisk
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