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  • Comparing size selectivity of traditional and knotless diamond-mesh codends in the Iceland redfish (Sebastes spp.) fishery 

    Cheng, Zhaohai; Einarsson, Haraldur Arnar; Bayse, Shannon; Herrmann, Bent; Winger, Paul (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-30)
    The size selectivity and usability of two diamond mesh codends, a traditional two-panel codend versus an experimental four-panel ultra-cross knotless mesh codend, were compared using the covered codend method in the Iceland redfish (<i>Sebastes norvegicus and S. viviparous</i>) fishery. Results showed that there was no significant difference in size selectivity between the codends at lengths greater ...
  • Attitudes and intentional reactions towards mariculture development - local residents' perspective 

    Armbrecht, John; Skallerud, Kåre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-22)
    Aquaculture (i.e., farming of aquatic organisms, including fish, molluscs, crustaceans, and aquatic plants) is playing an increasingly important role in the global food supply. The contribution of aquaculture to total fish production has risen steadily, reaching 44% in 2014 (Moffitt and Cajas-Cano, 2014). The future growth of aquaculture is expected to help accomplish the Sustainable Development ...
  • Preference for local food as a matter of helping behaviour: Insights from Norway 

    Skallerud, Kåre; Wien, Anders Hauge (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-02)
    Consumption of local food is a fast-growing trend supported by local food advocates and governments. This trend has also captured the interest of researchers. The present study draws from the foundational principles of the theoretical perspective of helping behaviour with a view to enhancing the understanding of why people buy local food. This article tests a conceptual framework with proposed ...
  • Who are the future seaweed consumers in a Western society? Insights from Australia 

    Birch, Dawn; Skallerud, Kåre; Paul, Nicholas A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-09)
    <i>Purpose</i>: The purpose of this paper is to profile the consumers who are likely to eat seaweed products in Australia.<p> <p><i>Design/methodology/approach</i>: The study was conducted as an online survey among 521 Australian consumers. Binary logistic regression modelling was used to profile the consumers.<p> <p><i>Findings</i>: The paper identifies education, familiarity, food ...
  • The design and implementation of driving time regulation 

    Bergland, Harald; Pedersen, Pål Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-21)
    Our object of study is welfare optimal driving time regulations in professional road transportation. Due to fatigue, traffic accident risks are supposed to increase as driving times rise. Conversely, the quantity and quality of road infrastructure affect productivity and safety in transportation positively. As the typical driver does not bear all the social costs when accidents happen, in the absence ...
  • No support for cryptic choice by ovarian fluid in an external fertilizer 

    Kleppe, April Snøfrid; Nordeide, Jarle Tryti; Rudolfsen, Geir; Figenschou, Lars; Larsen, Berner; Reiss, Katrin; Folstad, Ivar (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-22)
    Whether the ovarian fluid (OF) represents a selective environment influencing cryp‐tic female choice was tested using an external fertilizer experiencing intense sperm competition and large effects of OF on sperm swimming behavior—the Arctic charr (<i>Salvelinus alpinus</i>). We physically separated the OF from the eggs of reproductively active females and reintroduced either their ...
  • Migration in seabirds: seasonal structure in space and environment across species, populations and individuals 

    Merkel, Benjamin (Doctoral thesis; Doktorgradsavhandling, 2019-05-21)
    Identifying drivers of population trends in migratory species is difficult, as they can face many stressors while moving through different areas and environments during the annual cycle. Their population response to environmental change may in addition be affected by consistent differences in individual behaviour, which are widespread in free-living populations. An understanding of the structure of ...
  • Towards a framework to guide and facilitate interdisciplinary social-ecological system research in practice. 

    Weber, Charlotte Teresa (Doctoral thesis; Doktorgradsavhandling, 2019-06-27)
    Social-ecological systems (SES) consist of a social and an ecological system that are linked through a complex interplay of social and ecological processes. SES can be studied through SES research, which has become increasingly important because it is thought that it can potentially address and solve many societal challenges, such as climate change, resource scarcity, and habitat degradation. SES ...
  • Ecophysiological Responses of Sea Ice Algae and Phytoplankton to a Changing Arctic 

    Kvernvik, Ane Cecilie (Doctoral thesis; Doktorgradsavhandling, 2019-03-29)
    The ice-covered seas of the Arctic have two major types of primary producers; phytoplankton growing in open waters and sea ice algae growing within and on the underside of the sea ice. This thesis investigates the controlling role of light availability on Arctic pelagic and sympagic (i.e. ice-associated) algae, and how light-induced responses are modulated by NO3 and pCO2 levels. A combination of ...
  • Implementation of ecosystem-based ocean management 

    Sander, Gunnar (Doctoral thesis; Doktorgradsavhandling, 2019-03-29)
    Ecosystem-based management (EBM) is a holistic approach for nature management that aims at achieving the good health and sustainable use of ecosystems. It is a complex and challenging concept: understanding ecosystems and human impacts upon them is complicated, there are demanding needs for collaboration and harmonisation of approaches and policies, and many conflicting interests must be balanced. ...
  • Causes and consequences of ontogenetic dietary shifts: a global synthesis using fish models 

    Sanchez-Hernandez, Javier; Nunn, Andy D; Adams, Colin Ean; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-24)
    Ontogenetic dietary shifts (ODSs), the changes in diet utilisation occurring over the life span of an individual consumer, are widespread in the animal kingdom. Understanding ODSs provides fundamental insights into the biological and ecological processes that function at the individual, population and community levels, and is critical for the development and testing of hypotheses around key concepts ...
  • The transformation of the oceans and the future of marine social science 

    Arbo, Peter; Knol, Maaike; Linke, Sebastian; St. Martin, Kevin John (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-13)
    The oceans have become a juncture of great visions of blue growth as well as strong environmental concern. This paper discusses the essential role of the social sciences as the oceans increasingly emerge as a contested social arena. The marine social sciences have generated a vast knowledge about the development of fisheries and the implications of fisheries policies on coastal communities. We review ...
  • Policy Support for Women Entrepreneurs' Access to Financial Capital: Evidence from Canada, Germany, Ireland, Norway, and the United States 

    Coleman, Susan; Henry, Colette; Orser, Barbara; Foss, Lene; Welter, Friederike (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-22)
    This cross‐country study documents policies and practices designed to increase women entrepreneurs’ access to financial capital in Canada, Germany, Ireland, Norway, and the United States. Drawing on feminist theory, we examine assumptions of policy alongside the eligibility criteria, rules and regulations of practices. Our findings reveal that four of the five country policies examined were predicated ...
  • Prevalence of brucellosis among patients attending Wau Hospital, South Sudan 

    Madut, Nuol Aywel; Nasinyama, George William; Muma, John Bwalya; Sube, Kenneth L L; Ocan, Moses; Muwonge, Adrian; Godfroid, Jacques; Jubara, Ambrose Samuel; Kankya, Clovice (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-27)
    Brucellosis is a zoonotic disease of public health importance; its prevalence varies globally. In low-income countries, brucellosis is an endemic and neglected disease affecting both animals and humans. This study was intended to establish brucellosis sero-prevalence among patients attending Wau hospital, South Sudan. Across sectional study, was done among randomly selected patients attending Wau ...
  • Getting ready for the winter: timing and determinants of molt in an alpine ungulate 

    Déry, F.; Hamel, Sandra; Cote, Steeve D. (Mastergradsoppgave; Journal article; Tidsskriftartikkel, 2019-02-14)
    Because growth of new hairs entails energetic costs, individual condition and access to food should determine the timing of molt. Previous studies on the timing of molt in ungulates have mostly focused on the influence of age class and reproductive status, but the effects of body condition and environmental phenology have not been evaluated. Our goal was to assess how intrinsic traits and environmental ...
  • A life after Research? First Release of Harp Seals (Phoca groenlandica) after Temporary Captivity for Scientific Purposes 

    Blanchet, Marie-Anne; Acquarone, Mario; Biuw, Martin; Larsen, Roger B.; Nordøy, Erling Sverre; Folkow, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-08)
    Three wild-caught female harp seals (Pagophilus groenlandicus) from the Greenland Sea stock were brought into temporary captivity in connection with a controlled validation study on energetics. The two pups and one adult were kept in two indoor and outdoor experimental facilities approved by the Norwegian Animal Research Authority. They were trained daily using operant conditioning to participate ...
  • CpGs Induce Differentiation of Atlantic Salmon Mononuclear Phagocytes Into Cells With Dendritic Morphology and a Proinflammatory Transcriptional Profile but an Exhausted Allostimulatory Activity 

    Iliev, Dimitar Borisov; Lagos, Leidy; Thim, Hanna Leena; Jørgensen, Sven Martin; Krasnov, Aleksei; Jørgensen, Jorunn B (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-13)
    Due to their ability to present foreign antigens and prime naïve T cells, macrophages, and dendritic cells (DCs) are referred to as professional antigen-presenting cells (APCs). Although activated macrophages may function as APCs, these cells are particularly effective at directly engaging pathogens through phagocytosis, and production of antimicrobial compounds. On the other hand, DCs possess superb ...
  • Rethinking capitalist transformation of fisheries in South Africa and India 

    Menon, Ajit; Sowman, Merle; Bavinck, Jan Maarten (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
    The industrialization of fisheries and the growth of a capitalist sector within fisheries have received considerable scholarly attention. For the most part, scholars have emphasized how capitalism has led to privatization of the commons, forced small-scale resource users into wage labor, and marginalized the sector. This analysis does not, however, explain the continued presence of such a vibrant ...
  • Immunological response to Brucella abortus strain 19 vaccination of cattle in a communal area in South Africa 

    Simpson, Gregory; Marcotty, Tanguy; Rouille, Elodie; Chilundo, Abel; Letteson, Jean-Jacques; Godfroid, Jacques (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-29)
    Brucellosis is of worldwide economic and public health importance. Heifer vaccination with live attenuated <i>Brucella abortus</i> strain 19 (S19) is the cornerstone of control in low- and middle-income countries. Antibody persistence induced by S19 is directly correlated with the number of colony-forming units (CFU) per dose. There are two vaccination methods: a ‘high’ dose (5–8 × 10<sup>10</sup> ...
  • Antiviral Responses and Biological Concequences of Piscine orthoreovirus Infection in Salmonid Erythrocytes 

    Wessel, Øystein; Krasnov, Aleksei; Timmerhaus, Gerrit; Rimstad, Espen; Dahle, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-16)
    Salmonid red blood cells are the main target cells for <i>Piscine orthoreovirus</i> (PRV). Three genotypes of PRV (PRV-1,2,3) infect Atlantic salmon (<i>Salmo salar</i>), Chinook salmon (<i>Onchorhynchus tshawytscha</i>), Coho salmon (<i>Oncorhynchus kisutch</i>), rainbow trout (<i>Onchorhynchus mykiss</i>) and brown trout (<i>Salmo trutta</i>), and can cause diseases like heart and skeletal muscle ...

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