Viser treff 1909-1928 av 5086

    • Gear modifications for bycatch reduction in the Bay of Biscay demersal trawl fishery 

      Cuende de Francisco, Elsa (Doctoral thesis; Doktorgradsavhandling, 2022-12-20)
      <p>Bottom trawl fisheries have great social and economic importance for coastal communities in the Basque Country. However, the activity of the demersal trawl fishery in the Bay of Biscay, which includes the coastline of the Basque country, can be compromised due to its multispecies nature, high proportion of unwanted species in the catch, and the increasingly strict legislation implemented aiming ...
    • Gear selectivity and bycatch reduction in the Norwegian Red King Crab (Paralithodes camtschaticus) fishery. A study on size-selective performances of different escape openings 

      Starbatty, Peter (Master thesis; Mastergradsoppgave, 2016-06-14)
      This thesis aims to investigate ways to improve the size selective performances of the fishing gear that is currently employed in the fishery for Red King Crab, Paralithodes camtschaticus, in Northern Norway. High bycatch rates of undersized crabs are a source of concern since these individuals have to be sorted out and dicarded into the sea, a procedure that increases the risk for injuries and ...
    • Gelatinous zooplankton diversity, distribution and seasonality in the northern Barents Sea and Arctic Ocean 

      Ciambelli, Angelo (Master thesis; Mastergradsoppgave, 2023-05-15)
      Gelatinous zooplankton, here referring to the phylum Cnidaria and Ctenophora and the class Appendicularia are important components of marine ecosystems due to their very diverse diets, life cycles and seasonal dynamics. In the Barents Sea, several studies reviewed the gelatinous zooplankton diversity, yet few studies documented the diversity and distribution patterns between the advected ...
    • Gender and Entrepreneurship Research: A review of methodological approaches 

      Henry, Colette; Foss, Lene; Ahl, Helene (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-27)
      The paper presents the findings of a systematic literature review (SLR) of the gender and entrepreneurship literatures published in 18 journals over a 30-year period. The SLR sought to identify methodological trends in the field of gender and entrepreneurship, and to critically explore the type of methodological innovations needed in future scholarship. Findings reveal a proliferation of large-scale ...
    • Gender roles in fishery planning and projects. The case study of coast region in Tanzania 

      Msigwa Chando, Catherine (Master thesis; Mastergradsoppgave, 2002-05-31)
      Women play crucial roles in fisheries, particularly on the post harvest level. Despite this, they are noticeably absent from the discussion of many development programmes in fisheries. The focus is mainly on the needs and interests of men, neglecting women. Women are hardly involved in the planning and decision making or in the implementation and management of the projects. Therefore this study ...
    • Gender specific reproductive strategies of an arctic key species (Boreogadus saida) and implications of climate change 

      Nahrgang, Jasmine; Varpe, Øystein; Korshunova, Ekaterina; Murzina, Svetlana; Hallanger, Ingeborg G.; Vieweg, Ireen; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • The gender wage gap and Covid-19 

      Olcan, Cem (Master thesis; Mastergradsoppgave, 2022-05-31)
      The Covid-19 lockdown affected both the global and local economies and led to wage loss and wage inequality. This study explains traditional wage differences between women and men and examines the impact of the Covid-19 on women’s and men’s wages and working hours during the initial stages of the pandemic. The study uses differences-in-differences estimation. Yearly and monthly panel data from ...
    • Gene expression of lactobacilli in murine forestomach biofilms 

      Schwab, Clarissa; Tveit, Alexander Tøsdal; Schleper, Christa; Urich, Tim (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-04-04)
      Lactobacilli populate the gastro-intestinal tract of vertebrates, and are used in food fermentations and as probiotics. Lactobacilli are also major constituents of stable biofilms in the forestomach of rodents. In order to investigate the lifestyle of these biofilm lactobacilli in C57BL/6 mice, we applied metatranscriptomics to analyse gene expression (assessed by mRNA) and community composition ...
    • Gene-centromere mapping in meiotic gynogenetic European seabass 

      Oral, Münevver; Colléter, Julie; Bekaert, Michaël; Taggart, John B.; Palaoikostas, Christos; McAndrew, Brendan J.; Vandeputte, Marc; Chatain, Béatrice; Kuhl, Heiner; Reinhardt, Richard; Peruzzi, Stefano; Penman, David J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-07)
      Background: <br> Fully isogenic lines in fish can be developed using “mitotic” gynogenesis (suppression of first zygotic mitosis following inactivation of the sperm genome). However, genome-wide verification of the steps in this process has seldom been applied. We used ddRADseq to generate SNP markers in a meiotic gynogenetic family of European seabass (Dicentrarchus labrax): (i) to verify the lack ...
    • General vs health-specific consideration of immediate and future consequences to predict eating and exercise behavior in a Norwegian student population: A randomized survey experiment 

      Pozolotina, Tatiana; Olsen, Svein Ottar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-17)
      Over several decades, the consideration of future consequences (CFC) construct has been used to explain and predict health behaviors. However, the reported associations between CFC and health behaviors are relatively weak, leading to the low explanatory power of the models. Recent research suggests that CFC can be a domain-specific construct. In this study, we explored the psychometric properties ...
    • A Genetic and Chemical Perspective on Symbiotic Recruitment of Cyanobacteria of the Genus Nostoc into the Host Plant Blasia pusilla L. 

      Liaimer, Anton; Jensen, John Beck; Dittmann, Elke (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-01)
      Liverwort Blasia pusilla L. recruits soil nitrogen-fixing cyanobacteria of genus Nostoc as symbiotic partners. In this work we compared Nostoc community composition inside the plants and in the soil around them from two distant locations in Northern Norway. STRR fingerprinting and 16S rDNA phylogeny reconstruction showed a remarkable local diversity among isolates assigned to several Nostoc ...
    • Genetic and potential non-genetic benefits increase offspring fitness of polyandrous females in non-resource based mating system 

      Kekäläinen, Jukka; Rudolfsen, Geir; Janhunen, Matti; Figenschou, Lars; Peuhkuri, Nina; Tamper, Nina; Kortet, Raine (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
    • Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system 

      Klutsch, Cornelya; Maduna, Simo; Polikarpova, Natalia; Forfang, Kristin; Aspholm, Paul Eric; Nyman, Tommi; Eiken, Hans Geir; Amundsen, Per-Arne; Hagen, Snorre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-29)
      Habitat discontinuity, anthropogenic disturbance, and overharvesting have led to population fragmentation and decline worldwide. Preservation of remaining natural genetic diversity is crucial to avoid continued genetic erosion. Brown trout (<i>Salmo trutta</i> L.) is an ideal model species for studying anthropogenic influences on genetic integrity, as it has experienced significant genetic alterations ...
    • Genetic complexity in the marine environment: Population genomics of saithe (Pollachius virens), Greenland halibut (Reinhardtius hippoglossoides), beaked and golden redfish (Sebastes mentella and S. norvegicus) in the North Atlantic 

      Saha, Atal (Doctoral thesis; Doktorgradsavhandling, 2016-05-04)
      In this work, I investigated genetic complexity in four commercially exploited species from the North Atlantic: saithe (Pollachius virens L.), Greenland halibut (Reinhardtius hippoglossoides), and beaked and golden redfish (Sebastes mentella and S. norvegicus). The results were used 1) to assess the consistency between current management units and units identified by results based on genetic data ...
    • Genetic diversity and connectivity within Mytilus spp. in the subarctic and Arctic 

      Mathiesen, Sofie Smedegaard; Thyrring, Jakob; Hemmer-Hansen, Jakob; Berge, Jørgen; Sukhotin, Alexey A.; Leopold, Peter; Bekaert, Michaèl; Sejr, Mikael K; Nielsen, Einar Eg (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-26)
      Climate changes in the Arctic are predicted to alter distributions of marine species. However, such changes are difficult to quantify because information on present species distribution and the genetic variation within species is lacking or poorly examined. Blue mussels, Mytilus spp., are ecosystem engineers in the coastal zone globally. To improve knowledge of distribution and genetic structure of ...
    • Genetic diversity and differentiation of velvet belly lanternshark (Etmopterus spinax) in the Northeast Atlantic 

      Walther, Iselin C. W. (Master thesis; Mastergradsoppgave, 2022-06-15)
      Deep-sea sharks are little resilient to targeted harvesting and bycatch fisheries due to their life history strategy characterized by slow growth, late sexual maturity, low fecundity, and few offspring. The Northeast Atlantic component of Etmopterus spinax is an example of a species where substantial population changes in terms of abundances have occurred due to intensive fisheries induced mortality. ...
    • Genetic diversity and population structure of an important wild berry crop 

      Zoratti, Laura; Palmieri, Luisa; Jaakola, Laura; Häggman, Hely (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      The success of plant breeding in the coming years will be associated with access to new sources of variation, which will include landraces and wild relatives of crop species. In order to access the reservoir of favourable alleles within wild germplasm, knowledge about the genetic diversity and the population structure of wild species is needed. Bilberry (Vaccinium myrtillus) is one of the most ...
    • Genetic drivers for resistance and susceptibility traits in Atlantic salmon (Salmo salar) towards salmon lice (Lepeophtheirus salmonis) 

      James Abraham, Jeff (Master thesis; Mastergradsoppgave, 2021-05-16)
      Salmon lice (Lepeophtheirus salmonis), a common parasite on salmonids is one of the biggest problem the aquaculture industry faces today. The current methods used to combat salmon lice in farmed Atlantic salmon (Salmo salar) industry are often considered to affect the ecosystem negatively; and inefficient in a long run long run due to development of resistance in the parasite. The potential of ...
    • Genetic fingerprinting of salmon louse (Lepeophtheirus salmonis) populations in the North-East Atlantic using a random forest classication approach 

      Jacobs, Arne; De Noia, M; Præbel, Kim; Kanstad-Hanssen, Øyvind; Paterno, M; Jackson, D; McGinnity, P; Sturm, Armin; Elmer, K. R.; Llewellyn, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-19)
      Caligid sea lice represent a significant threat to salmonid aquaculture worldwide. Population genetic analyses have consistently shown minimal population genetic structure in North Atlantic <i>Lepeophtheirus salmonis</i>, frustrating efforts to track louse populations and improve targeted control measures. The aim of this study was to test the power of reduced representation library sequencing ...
    • Genetic Inactivation of European Sea Bass (Dicentrarchus labrax L.) Eggs Using UV-Irradiation: Observations and Perspectives 

      Colléter, Julie; Penman, David J; Lallement, Stephane; Fauvel, Christian; Hanebrekke, Tanja Lexau; Osvik, Renate Døving; Eilertsen, Hans Christian; D'Cotta, Helena; Chatain, Beatrice; Peruzzi, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Androgenesis is a form of uniparental reproduction leading to progenies inheriting only the paternal set of chromosomes. It has been achieved with variable success in a number of freshwater species and can be attained by artificial fertilization of genetically inactivated eggs following exposure to gamma (γ), X-ray or UV irradiation (haploid androgenesis) and by restoration of diploidy by suppression ...