Artikler, rapporter og annet (Norges fiskerihøgskole): Recent submissions
Now showing items 341-360 of 1012
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Aktuelle sykdomsutbrudd og diagnoser
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020)Aktuelle diagnoser, «nye» sykdommer og spesielle tilfeller har i mange år blitt presentert under vignetten «Aktuelle sykdomsutbrudd og diagnoser fra Veterinærinstituttet, Mattilsynet og NMBU Veterinærhøgskolen». Redaksjonen er av den oppfatning at dette er nyttig og lett tilgjengelig informasjon som bidrar til å opprettholde medlemmenes kunnskap om utviklingen innen diagnostikk og overvåkning av ... -
Bakteriell gjellebetennelse hos rognkjeks (Cyclopterus lumpus)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021)Veterinærinstituttet mottok i januar i år en innsendelse fra et settefiskanlegg for rognkjeks. Rognkjeksen var 10-13 gram og uvaksinert. Settefiskanlegget er et gjennomstrømningsanlegg med sjøvann. Det var mistanke om gjelleproblematikk da det ble rapportert om døde individer med utspilte gjellelokk og bleke gjeller. Ved Veterinærinstituttet ble det gjennomført histopatologiske og immunhistokjemiske ... -
Niche separation between two dominant crustacean predators in European estuarine soft-bottom habitats
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-05)Epibenthic predators in estuarine shallow soft-bottom environments are generally considered to have broad ecological niches with a wide overlap. This allows them to cope with abundant but highly variable prey communities. The assessment of trophic relationships in shallow soft-bottom habitats is, however, challenging and often complicated by the bias and low resolution of the analytical tools available ... -
Structural and functional analyses of Rubisco from arctic diatom species reveal unusual posttranslational modifications
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-20)The catalytic performance of the major CO<sub>2</sub>-assimilating enzyme, ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), restricts photosynthetic productivity. Natural diversity in the catalytic properties of Rubisco indicates possibilities for improvement. Oceanic phytoplankton contain some of the most efficient Rubisco enzymes, and diatoms in particular are responsible for a significant ... -
Ethical By Designer - How to Grow Ethical Designers of Artificial Intelligence
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-13)Ethical concerns regarding Artificial Intelligence (AI) technology have fueled discussions around the ethics training received by AI designers. We claim that training designers for ethical behaviour, understood as habitual application of ethical principles in any situation, can make a significant difference in the practice of research, development, and application of AI systems. Building on ... -
Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-17)From 2015 to 2021, we optimized mass cultivation of diatoms in our own developed vertical column airlift photobioreactors using natural and artificial light (LEDs). The project took place at the ferrosilicon producer Finnfjord AS in North Norway as a joint venture with UiT—The Arctic University of Norway. Small (0.1–6–14 m<sup>3</sup>) reactors were used for initial experiments and to produce inoculum ... -
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-18)The aim of this study was to compare the catch quality of Northeast Atlantic cod (Gadus morhua) in the Barents Sea bottom trawl fishery caught using the conventional configuration (a sorting grid followed by a diamond mesh (T0) codend) and a T90° turned mesh codend (T90) without a grid. Twenty hauls were conducted, consisting of 10 hauls with the conventional configuration and 10 hauls with the ... -
Why and how to regulate Norwegian salmon production? – The history of Maximum Allowable Biomass (MAB)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-05)Salmon farming has been a great success story in Norway over the last 50 years, but the industry is still much disputed. Right from the start, farmers were licensed, with a limit on total production. In addition, each site was regulated according to carrying capacity. Over the years, various management measures have been used to regulate both the total production and environmental conditions, before ... -
Food as a commodity, human right or common good
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-11)The European Commission’s recently published ‘Farm to Fork’ strategy seeks to facilitate a transition towards a sustainable food system. The strategy moves from a linear understanding of the food system towards a more circular view of the system’s complex interdependencies. Despite these laudable intentions, it does not follow the guidance of the EU’s Group of Chief Scientific Advisors that the ... -
The state and challenges of Arctic governance in an era of transformation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-17)The Arctic plays a central role in the Earth’s climate and an increasingly important role in international relations and politics. As the region undergoes profound transformation due to combined impacts of anthropogenic climate change and global economic forces, new questions of governance come to the forefront of debates about the future of the region. This primer provides an essential overview of ... -
Size selection and exploitation pattern of diamond mesh codends with different mesh sizes in demersal trawl fishery for banded scad (Caranx (Atule) kalla) in the South China Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-24)Size selection and exploitation pattern of diamond-mesh codends with different mesh sizes, 25 to 54 mm, for demersal trawl fishery targeting banded scad (Caranx (Atule) kalla) was tested and compared using the covered codend method in the South China Sea. Our results demonstrated that the selective parameters, L50 (50% retention length) and SR (selection range), would increase as the mesh sizes of ... -
Estimating overall size-selection pattern in the bottom trawl fishery for four economically important fish species in the Mediterranean Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-18)The management of multispecies fisheries, such as the Mediterranean bottom trawl fishery, is always a challenge. However, information on gear selectivity and discards has been studied separately so far. In this paper, the overall size-selection pattern by the trawl codend in the sea and by the fisher onboard the vessel is investigated for four commercially important fish species, Mullus barbatus, ... -
Reducing catch efficiency of rabbitfish (Siganus oramin) in a shrimp beam trawl fishery of the South China Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-07)The bycatch of unwanted fish species is a main concern in shrimp beam trawl fishery of the South China Sea. This study evaluated the effect of using combined square-mesh and diamond-mesh codends (CSDM codends) on catch efficiency of a shrimp trawl fishery with the catch comparison and catch ratio approach. The trouser trawl method was applied using the commercial 22-mm diamond mesh codend (D22) as ... -
Size selectivity and catch efficiency of diamond-mesh codends in demersal trawl fishery for conger pike (Muraenesox cinereus) of the South China Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-25)Size selectivity and catch efficiency of six diamond-mesh codends with different mesh sizes, 25–54 mm (termed as D25-D54), for conger pike (Muraenesox cinereus) were tested and compared using the covered codend method in the South China Sea (SCS). In order to address the present minimum mesh size (MMS) regulations of the trawl fishery for conger pike in the SCS, we quantified the selective properties ... -
Assessing public preferences for deep sea ecosystem conservation: a choice experiment in Norway and Scotland
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-18)ecent events around the world have revealed varying degrees of public support for climate change and environmental regulation. Applying a latent class logit model, this study investigates Norwegian and Scottish public’s economic support for proposed deep sea management policies for novel attributes, identifying the presence of preference heterogeneity. Marine litter and health of fish stocks were ... -
Mitochondrial Cytochrome Oxidase Subunit 1: A Promising Molecular Marker for Species Identification in Foraminifera
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-02)Traditional morphological methods for species identification are highly time consuming, especially for small organisms, such as Foraminifera, a group of shell-building microbial eukaryotes. To analyze large amounts of samples more efficiently, species identification methods have extended to molecular tools in the last few decades. Although a wide range of phyla have good markers available, for ... -
Biomaterials and Bioactive Natural Products from Marine Invertebrates: From Basic Research to Innovative Applications
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-22)Aquatic invertebrates are a major source of biomaterials and bioactive natural products that can find applications as pharmaceutics, nutraceutics, cosmetics, antibiotics, antifouling products and biomaterials. Symbiotic microorganisms are often the real producers of many secondary metabolites initially isolated from marine invertebrates; however, a certain number of them are actually synthesized by ... -
A High-Affinity Peptide Ligand Targeting Syntenin Inhibits Glioblastoma
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-27)Despite the recent advances in cancer therapeutics, highly aggressive cancer forms, such as glioblastoma (GBM), still have very low survival rates. The intracellular scaffold protein syntenin, comprising two postsynaptic density protein-95/discs-large/zona occludens-1 (PDZ) domains, has emerged as a novel therapeutic target in highly malignant phenotypes including GBM. Here, we report the development ... -
A comparative study of the effects of pelleted and extruded feed on growth, financial revenue and nutrient loading of Nile tilapia (Oreochromis niloticus L.) cage culture in a lacustrine environment
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-05)We compared the benefits of using extruded feed (EF), against pelleted feed (PF) to guide cage culture investments in Great Lakes. Three out of six cages in the same farm had fish that were fed EF and the other half, belonging to a different farm had fish that were fed PF. The diets were similar in crude protein, lipid and energy content. However, the fiber content in PF was 4 times higher than that ... -
Monitoring of environmental DNA from nonindigenous species of algae, dinoflagellates and animals in the North East Atlantic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-14)Monitoring the distribution of marine non-indigenous species is a challenging task. To support this monitoring, we developed and validated the specificity of 12 primer-probe assays for detection of environmental DNA (eDNA) from marine species all non-indigenous to Europe. The species include sturgeons, a Pacific red algae, oyster thief, a freshwater hydroid from the Black Sea, Chinese mitten crab, ...