A5059087329- Marine Bivalve and Aquaculture Studies
- Aquatic Invertebrate Ecology and Behavior
- Marine and fisheries research
- Fish Ecology and Management Studies
- Aquaculture disease management and microbiota
- Indigenous Studies and Ecology
- Parasite Biology and Host Interactions
- European and International Law Studies
- Aquaculture Nutrition and Growth
- Identification and Quantification in Food
- Ocean Acidification Effects and Responses
- Meat and Animal Product Quality
- Environmental DNA in Biodiversity Studies
- Calcium Carbonate Crystallization and Inhibition
- Education, Healthcare and Sociology Research
- Genetic diversity and population structure
- Research in Social Sciences
- Food Industry and Aquatic Biology
- Animal Virus Infections Studies
- Marine animal studies overview
- Fisheries and Aquaculture Studies
- Invertebrate Immune Response Mechanisms
- Polymer Science and PVC
- Crustacean biology and ecology
- Marine Biology and Environmental Chemistry
Norwegian Institute of Marine Research
2016-2025
Nord University
2021
Austevoll Seafood (Norway)
2021
Norconsult (Norway)
2004
University of Bergen
1988
Several species of wrasse (Labridae) are used as cleaner fish to remove salmon lice from farmed Atlantic salmon. We estimated the fishery and use in Hardangerfjord. The numbers labrids on rainbow trout farms varied between 86,000 251,000 2002–2006, but increased much 1.1 million 2009 2010. A total 93,500 kg (around 1.54 million) were reported landed during 2000–2010. Corkwing (Symphodus melops) was by far most important species: 52% weight 56% number. Ballan (Labrus bergylta) made up 34%...
The Pacific oyster Crassostrea gigas has recently expanded its range in Scandinavia. expansion is presumably a result of northwards larval drift. Massive settlements were recorded many areas along the Swedish west coast and southern Norway 2013 2014. After spawning season 2014, temperature surface water peaked at 24-26°C. this period, high sudden mortalities occurred hatchery wild populations south Norway. Surveys collected data showed that mainly during 3 wk September. All size classes...
The host specificity of Marteilia pararefringens is under discussion after its suggested reseparation from the flat oyster pathogen M. refringens in 2018. In Norway, has been detected mussels Mytilus spp. sampled several isolated, small heliothermic ponds (polls) that, at least on western coast, inhabit some last reproducing populations. never Norway. polls have a limited water exchange, and their uniquely warm temperature can result high prevalence infection intensities, representing unique...
Sexual maturation and spawning was followed in one two year old rope cultured mussels ( Mytilus edulis ) from April to December. Development of gonad storage tissue using descriptive categories histology, development total soft meat yield condition index. Both age groups were mature both during spring autumn had similar patterns maturation. May characterized by scattered activity accumulation reserves at the same time, resulting relative constant indices this period. This ripening gonads an...
ABSTRACT: Flat oysters, Ostrea edulis , were emersed and stored for 23 d in freshwater ice cold without ice. A control group was maintained running seawater. Death, histological changes, bacterial growth, changes sensory profile measured described. Death of the oysters could be determined by measuring tissue pH. The profiles iced cold‐stored significantly different from controls, correlated with appearance spoilage bacteria degradation digestive tissues. Changes most pronounced specimens....
Blue mussels Mytilus edulis with shell deformations and green pustules containing parasitic algae were collected at 3 coastal sites (Burøy, Norway; Bockholm, Denmark; Goose Green, Falkland Islands). A comparative study, including mussel histopathology, algal morphology, ultrastructure phylogenetic position was performed. Green mainly located in the posterior portion of mantle gonad tissues adductor muscle. Electron microscopy confirmed presence cells similar morphology to Coccomyxa...
Experimental studies evaluating the effects of food availability on movement free-ranging animals generally involve supplementation rather than suppression.Both approaches can yield similar insights, but we were interested in potential for using suppression management and control invasive predators, particular, brown treesnake (Boiga irregularis) Guam.However, understanding a species' response to resources is critical before employing such strategy.We studied movements 24 radio-tagged B....
The salmon industry is heavily dependent on wrasse for delousing infected fish. goldsinny numerically the most important, and each year, millions are harvested from wild transported large distances into fish farms. Population genetic knowledge required to sustainably exploit this species. Here, 1051 wrasses 16 locations across Scandinavia, British Isles, Spain were genotyped with 14 microsatellite 36 SNP markers. Within-population diversity decreased towards north, a break was observed North...
Populations of European freshwater pearl mussels, Margartitfera margaritifera, have declined dramatically throughout their range. Better knowledge postlarval feeding is required to determine factors influencing juvenile survival and growth, both in captivity natural streams. Development the filtering organ represents a critical stage juveniles. The (ctenidium) postlarvae (shell length, L = 1–3 mm) was studied by quantitative histology. Ctenidial development depended on mussel size, not age...
Intracellular microcolonies of bacteria, in some cases developing large extracellular cysts, have been historically reported infecting a wide diversity economically important mollusc species worldwide, sometimes associated with severe lesions and mass mortality events. As an effort to characterise those organisms, traditionally named as Rickettsia or Chlamydia -like organisms (RLO/CLO), via international collaboration, 98 samples comprising 20 were collected over 10 countries examined using...
Norway had historically been considered free of marteiliosis in bivalves since the disease surveillance programme began 1995. However, 2016, Marteilia pararefringens, a protistan parasite mussels Mytilus spp., was described heliothermic lagoon-a poll-previously used to produce flat oyster spat. To study whether introduced, and possibly spread, via historical networks on south west coast, we sampled aquaculture polls that were part different farmers wild, natural with no activity....
The Manila clam Ruditapes philippinarum was introduced to Norway in 1987 and produced 2 hatcheries until 1991. Clam seed planted at 6 sites. Two sites were on the Island of Tysnes, south Bergen. Surviving adult clams recovered 1995 1996. In present study, from original seeding that displayed morphological signs brown ring disease (BRD) June 2003 (n=7) 2004 (n=17). Samples extrapallial fluid, tissues haemolymph inoculated marine agar. Replicate subcultures selective media used select...
Abstract Skilbrei, O. T., Holst, J. C., Asplin, L., and Mortensen, S. 2010. Horizontal movements of simulated escaped farmed Atlantic salmon (Salmo salar) in a western Norwegian fjord. – ICES Journal Marine Science, 67: 1206–1215. The dispersal Hardangerfjord Norway was studied by telemetry. Tagged fish were released from farms on five different dates the course 1 year. Irrespective time year, dispersed rapidly, with mean displacement release site 5–7 km after d, 9–12 2 d. Individual rates...
Abstract Marteilia refringens causes marteiliosis in oysters, mussels and other bivalve molluscs. This parasite previously comprised two species, M. maurini , which were synonymized 2007 subsequently referred to as ‘O-type’ ‘M-type’. O-type has caused mass mortalities of the flat oyster Ostrea edulis . We used high throughput sequencing histology intensively screen oysters ( Mytilus ) from UK, Sweden Norway for infection by both types generate multi-gene datasets clarify their genetic...
Abstract Eukaryote symbionts of animals are major drivers ecosystems not only because their diversity and host interactions from variable pathogenicity but also through different key roles such as commensalism to types interdependence. However, molecular investigations metazoan eukaryomes require minimising coamplification homologous genes. In this study we (1) identified a previously published “antimetazoan” reverse primer theoretically enable amplification wider range microeukaryotic...
DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 69:163-173 (2006) - doi:10.3354/dao069163 Immunohistochemistry great scallop Pecten maximus larvae experimentally challenged with pathogenic bacteria Nina Sandlund1,*, Lise Torkildsen1, Thorolf Magnesen2, Stein Mortensen1, Øivind Bergh1 1Institute Marine Research, PO Box 1870 Nordnes, 5817 Bergen, Norway 2Centre for...