Norges fiskerihøgskole: Recent submissions
Now showing items 1-20 of 1690
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SeaMark deliverable D7.3: Initial assessment of marked potential
(Research report; Forskningsrapport, 2024)The main objective of the SeaMark project is to demonstrate how to scale up innovative seaweed cultivation and processing into price-competitive product applications making the entire supply chain attractive for commercial investments. This report is the third outcome from SeaMark Work Package 7 (WP7) – Go-To-Market (GTM) strategies for products, and it builds a foundation for the contribution ... -
The 2024 Outline of Fungi and fungus-like taxa
(Research report; Forskningsrapport, 2024)With the simultaneous growth in interest from the mycological community to discover fungal species and classify them, there is also an important need to assemble all taxonomic information onto common platforms. Fungal classification is facing a rapidly evolving landscape and organizing genera into an appropriate taxonomic hierarchy is central to better structure a unified classification scheme and ... -
Climatic events and disease occurrence in intensive Litopenaeus vannamei shrimp farming in the Mekong area of Vietnam
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-26)As recurrent disease outbreaks impart economic adversity across the global shrimp farming sector in general, and in Asia in particular, clarifying determinants of outbreak susceptibility carries significance for sustainability in economic growth and social and environmental prospects. This study employs logistic regression to assess the probability of disease occurrence in intensive white leg shrimp ... -
The immune gene expression profile of sterile and fertile Atlantic salmon (Salmo salar L.) during smoltification and post transportation stress - A comparative overview
(Master thesis; Mastergradsoppgave, 2022-11-23)The escape of farmed salmon may result in unwanted interbreeding with wild salmon populations. The development of a sterile salmon can prevent the negative effect of unwanted genetic introgression as well as provide the industry with solutions to drawbacks associated with sexual maturation. A sterile fish will also improve the competitive strength of the 6 Norwegian breeding companies as the fish ... -
The Core of the Matter—Importance of Identification Method and Biological Replication for Benthic Marine Monitoring
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-14)Benthic macrofauna are important and widely used biological indicators of marine ecosystems as they have limited mobility and therefore integrate the effects of local environmental stressors over time. Recently, environmental DNA (eDNA) analysis has provided a potentially more resource-efficient approach for benthic biomonitoring than traditional morphology-based methods. Several studies have ... -
Reproductive biology of lumpfish (Cyclopterus lumpus): a key to successful selective breeding
(Research report; Forskningsrapport, 2022)A detailed description of lumpfish reproductive biology has been described in terms of gonadal development using histological analysis and physiology using sex steroid development. This knowledge of basic reproductive biology of lumpfish has adopted by our industry partners in their breeding activities in their facilities. Our results demonstrated that spawning of lumpfish can be shifted using ... -
On the origin of bird's nest fungi: Phylogenomic analyses of fungi in the Nidulariaceae (Agaricales, Basidiomycota)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-07)Nidulariaceae, also known as bird’s nest fungi, is an understudied group of mushroom-forming fungi. The common name is derived from their nest-like morphology. Bird’s nest fungi are ubiquitous wood decomposers or saprobes on dung. Recent studies showed that species in the Nidulariaceae form a monophyletic group with five sub-clades. However, phylogenetic relationships among genera and placement ... -
Bioprospecting of inhibitors of EPEC virulence from metabolites of marine actinobacteria from the Arctic Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-30)A considerable number of antibacterial agents are derived from bacterial metabolites. Similarly, numerous known compounds that impede bacterial virulence stem from bacterial metabolites. Enteropathogenic Escherichia coli (EPEC) is a notable human pathogen causing intestinal infections, particularly affecting infant mortality in developing regions. These infections are characterized by microvilli ... -
Efficient and sustainable: innovative pot design for a Mediterranean small-scale fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-28)Pots are traditional fishing gear type largely employed in Mediterranean Small Scale Fisheries (SSFs). Their often higher species selectivity and catch quality compared to other gear types such as passive set nets or trawls are appealing characteristics for reducing the impact on benthic communities and diversifying fishing effort in the region. Despite this, in some SSFs, pots are still rarely used ... -
High-Resolution Longitudinal eDNA Metabarcoding and Morphological Tracking of Planktonic Threats to Salmon Aquaculture
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-30)Salmonid aquaculture, a major component of the Northern European, North American, and Chilean coastal economies, is under threat from challenges to gill health, many of which originate from plankton communities. A first step toward mitigating losses is to characterize the biological drivers of poor gill health. Numerous planktonic taxa have been implicated, including toxic and siliceous microalgae, ... -
Effects of oxygen levels and temperature on growth and physiology of pikeperch juveniles cultured in a recirculating aquaculture system
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-02)This study aimed to understand how environmental factors, specifically water temperature and oxygen saturation, affect the growth performance and physiology of pikeperch (Sander lucioperca) juveniles in recirculating aquaculture systems (RASs). Given the importance of optimising growth conditions in aquaculture to maximise efficiency, it aims to assess whether different combinations of oxygen ... -
Noise pollution from Arctic expedition cruise vessels: understanding causes, consequences and governance options
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-10)Significant increase in shipping in the Arctic has caught international and national attention. The rising presence of touristic expedition cruise vessels might describe a special case for noise as a marine pollutant while they seek exclusive opportunities to experience the Arctic first-hand. This interdisciplinary study develops a conceptual framework to investigate context-specific vessel ... -
Size selectivity of flatfish in trawl codends
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-28)Flatfish constitute a substantial proportion of the catch in several demersal trawl fisheries across the globe. Therefore, knowledge on how to discriminate between the individuals that are to be captured or released, by size, is important for the sustainability of exploited stocks. Using European plaice (Pleuronectes platessa), flounder (Platichthys flesus), and dab (Limanda limanda) as ... -
Occurrence of the invasive pink salmon (Oncorhynchus gorbuscha, Walbaum 1792) in Greenland 2020 and 2021 as revealed using citizen science, snorkeling, and environmental DNA metabarcoding of fishes in the Kapisillit River
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-17)The occurrence of the invasive pink salmon (Oncorhynchus gorbuscha, Walbaum 1792) in Greenland was initially described in 2019 using social media to collect data on their presence. In this study we continue data collection through social media and initiate a monitoring program of the Kapisillit River in Southwest Greenland using snorkeling and environmental DNA (eDNA) metabarcoding in 2020 and 2021. ... -
Leaving the niche: Recommendations for mainstreaming Low Trophic Aquaculture in countries around the Atlantic basin
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-01)Low Trophic Aquaculture (LTA) is the farming of aquatic organisms such as primary producers (e.g., seaweeds) and primary consumers (e.g. bivalves). Despite recognition as a key pathway to the provision of sustainable food from the oceans, many forms of LTA around the Atlantic basin remain in the niche stage of socio-technical evolution. With governance regarded as a limiting factor to LTA development, ... -
Can pots be an alternative fishing gear to gillnets? A Mediterranean case study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-12)Small-scale coastal fisheries in the Mediterranean often employ gillnets, a widely used gear worldwide. The disadvantages of gillnets in this fishery include high bycatch levels of unwanted species and consequent discards. Moreover, spatial conflict with other gears and dolphin depredation often results in considerable economic loss. Alternative fishing methods are being tested. This study investigated ... -
Can automatic measuring replace humans when evaluating a shrimp fishery?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-05)Size measurements of fish and crustacean species play a critical role in fishery stock assessments, fishing gear size selectivity studies, and monitoring compliance with fisheries management regulations. One such example is from shrimp fisheries where samples of trawl-caught shrimps are frequently collected and size measured. However, the manual measurement of hundreds of small shrimps per sample ... -
The microbiome of bioreactors containing mass-cultivated marine diatoms for industrial carbon capture and utilization
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-10)Marine microalgae are a promising innovation platform for carbon capture and utilization (CCU) biotechnologies to mitigate industrial greenhouse gas emissions. However, industrial-scale cultivation of algal mono-cultures is challenging and often unscalable. Non-axenic microalgae in large semi-open photobioreactors lead to the co-cultivation of diverse microbial communities. There is limited knowledge ... -
Reproductive performance of lumpfish (Cyclopterus lumpus, L. 1758) females: Effects of integrated photoperiod and temperature manipulations on sexual maturation and spawning
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-15)A successful control of sexual maturation is crucial for year-round production of lumpfish juveniles destined as cleaner fish in Atlantic salmon aquaculture. This study investigated the combined effects of photoperiod and temperature manipulations on sexual maturation and spawning in lumpfish females. Lumpfish juveniles were exposed to simulated natural and nine-month compressed annual photoperiods, ... -
Joint Russian Norwegian Arctic Fisheries Working Group (JRN-AFWG) Report 2024
(Research report; Forskningsrapport, 2024-06-21)On 30th March 2022 all Russian participation in ICES was temporally suspended. Although the announcement of the suspension stressed the role of ICES as a “multilateral science organization”, this suspension applied not only to research activities, but also to the ICES work providing fisheries advice for the sustainable management of fish stocks and ecosystems. As a result of the suspension, the ICES ...