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    • East is East and West is West: Population genomics and hierarchical analyses reveal genetic structure and adaptation footprints in the keystone species Paracentrotus lividus (Echinoidea) 

      Carreras, Carlos; García-Cisneros, Alex; Wangensteen Fuentes, Owen Simon; Ordóñez, Victor; Palacín, Creu; Pascual, Marta; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-14)
      <i>Aim</i> - The Atlanto‐Mediterranean edible purple sea urchin, <i>Paracentrotus lividus</i>, is a commercially exploited keystone species in benthic communities. Its browsing activity can deeply modify the littoral landscape, and changes in its abundance are of major conservation concern. This species is facing nowadays contrasting anthropogenic pressures linked to predator release, exploitation ...
    • The ecological and economic value of cold-water coral ecosystems 

      Foley, Naomi; Armstrong, Claire W. (Journal article; Tidsskriftartikkel, 2010)
      Despite the growing scientific literature on cold-water corals (CWC) there appears to be no studies that address the economic values or economic management of the resource. This paper presents an overview of the goods and services of CWC and their associated biodiversity. Use and non-use values associated with CWC are presented, and the methods relevant for assessing their valuation are discussed. ...
    • Ecological linkages in a Caribbean estuary bay. 

      Andrade, Hector; Santos, Jorge; Ixquiac, MJ (Journal article; Tidsskriftartikkel, 2015-08-06)
      Central America and the western Caribbean form a center of freshwater and marine biodiversity that is now receiving attention in ecological and evolutionary studies. We conducted one integrated ecological study of Amatique Bay, Guatemala, a major estuary lagoon connected to the Mesoamerican Reef System, and provide novel information for management and conservation of similar systems across the ...
    • Ecological speciation in European whitefish is driven by a large‐gaped predator 

      Öhlund, Gunnar; Bodin, Mats; Nilsson, Karin; Öhlund, Sven-Ola; Mobley, Kenyon B.; Hudson, Alan G.; Peedu, Mikael; Brännström, Åke; Bartels, Pia; Præbel, Kim; Hein, Catherine L.; Johansson, Petter; Englund, Göran (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-13)
      Lake‐dwelling fish that form species pairs/flocks characterized by body size divergence are important model systems for speciation research. Although several sources of divergent selection have been identified in these systems, their importance for driving the speciation process remains elusive. A major problem is that in retrospect, we cannot distinguish selection pressures that initiated divergence ...
    • Economic Impacts of Global Warming : The Case of the Barents Sea Fisheries 

      Eide, Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2007)
      Regional analyses of possible physical and biological effects of global warming in the Barents Sea area have been carried out recently. Based on such studies possible economic impacts of global warming on the Barents Sea fisheries have been quantified, assuming different types of management regimes. The EconSimp2000 model, consisting of the ecosystem model AggMult and the fleet model EconMult have ...
    • Economic performance and capacity utilisation in vietnamese purse seine fishery 

      Cao, Thi Hong Nga; Eide, Arne; Armstrong, Claire W.; Long, Le Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
      This study identifies differences in vessel efficiency amongst purse seiners in Vietnamese fishery. Deterministic data envelopment analysis (DEA) was used to assess relative capacity utilisation of each vessel, and double bootstrap DEA was adopted to overcome some of the drawbacks of nonparametric DEA. The study was based on a survey of costs and earnings from 52 purse seiners in 2016, revealing ...
    • Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery 

      Brinkhof, Jesse; Herrmann, Bent; Larsen, Roger B.; Veiga-Malta, Tiago (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-26)
      A new codend concept developed and tested exhibited significantly improved quality of caught cod (<i>Gadus morhua</i>) compared to that of the conventional codend used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving codend raised concerns about its size selectivity and the possibility that higher retention probability could negatively impact the catch pattern ...
    • The effect of algae diets (Skeletonema costatum and Rhodomonas baltica) on the biochemical composition and sensory characteristics of Pacific cupped oysters (Crassostrea gigas) during land-based refinement 

      van Houcke, Jasper; Medina, Isabel; Mæhre, Hanne K; Cornet, Josiane; Cardinal, Mireille; Linssen, Jozef; Luten, Joop (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-20)
      <p>Oyster refinement, a common practice in France, is aimed at increasing the weight of oyster tissue and influencing the taste properties of the refined oysters. Refinement usually takes place in land-based systems where the oysters are fed with relatively high concentrations of microalgae. In this study the impact of feeding <i>Skeletonema costatum</i> and <i>Rhodomonas baltica</i> on the biochemical ...
    • Effect of an algal amendment on the microbial conversion of coal to methane at different sulfate concentrations from the Powder River Basin, USA 

      Schweitzer, Hannah; Smith, Heidi J.; Barnhart, Elliott P.; Gerlach, Robin; Fields, Matthew W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-29)
      Biogenic methane is estimated to account for one-fifth of the natural gas worldwide and there is great interest in controlling methane from different sources. Biogenic coalbed methane (CBM) production relies on syntrophic associations between fermentative bacteria and methanogenic archaea to anaerobically degrade recalcitrant coal and produce methanogenic substrates. However, very little is known ...
    • Effect of artificial lights on catch efficiency and capture patterns in Asian paddle crab (Charybdis japonica) gillnet fishery 

      Yu, Mengjie; Herrmann, Bent; Cerbule, Kristine; Liu, Changdong; Zhang, Liyou; Tang, Yanli (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-22)
      The gillnet fishery targeting Asian paddle crab (Charybdis japonica) is an important commercial fishery in the Yellow Sea of China. However, low catch rates represent a challenge, and solutions for improving the catch efficiency are crucial for economical sustainability in this fishery. Therefore, we tested whether the use of artificial fishing lights could improve gillnet catch performance. ...
    • Effect of Bait Type and Bait Size on Catch Efficiency in the European Hake Merluccius merluccius Longline Fishery 

      Sistiaga, Manu Berrondo; Herrmann, Bent; Rindahl, Lasse; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-21)
      We investigated the effect of bait type and bait size on the catch ef fi ciency of a demersal longline fi shery targeting European Hake Merluccius merluccius in the North Sea. Automation of the labor-intensive processes onboard fi shing vessels requires fi nding alternatives to the traditional bait used in the fi shery (i.e., whole European Pilchard Sardina pilchardus ). Of the six ...
    • The Effect of Buffer Towing on Quality Aspects of Frozen and Thawed Atlantic Cod (Gadus Morhua) 

      Esaiassen, Margrethe; Jensen, Tonje Kristin; Eilertsen, Venil T.; Larsen, Roger B.; Olsen, Stein Harris; Tobiassen, Torbjørn Inge (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-16)
      A large part of the Northeast Atlantic cod caught with trawls is landed frozen, processed, and sold thawed. Many trawlers have adapted a fishing practice termed ‘buffer towing’, causing probability for poor exsanguination and fillet redness. Here, the effect of buffer towing upon color and hemoglobin concentration in cod loin section is studied, and the development of TVB-N during chilled storage ...
    • Effect of chrysophanic acid on immune response and immune genes transcriptomic profile in Catla catla against Aeromonas hydrophila 

      Harikrishnan, Ramasamy; Devi, Gunapathy; Balasundaram, Chellam; Van Doan, Hien; Jaturasitha, Sanchai; Ringø, Einar; Faggio, Caterina (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-12)
      The effect of chrysophanic acid (CA) (2, 4, and 8 mg kg<sup>−1</sup>) on the immunity and immune-related gene profile of Catla catla against Aeromonas hydrophila is reported. In both control and treated groups fed with 2 mg kg<sup>−1</sup> (2 CA), the phagocytosis, hemolytic, myeloperoxidase content, and superoxide anion production decreased significantly between 6th and 8th weeks, whereas when fed ...
    • The effect of CO2, total ammonia nitrogen and pH on growth of juvenile lumpfish (Cyclopterus lumpus) 

      Thorarensen, Helgi; Imsland, Albert; Monroe, Amber Christina (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-12)
      The objective of this study was to examine the effects of CO<sub>2</sub>, total ammonia nitrogen (TAN: nitrogen bound as either NH<sub>3</sub> or NH<sub>4</sub><sup>+</sup>) and pH on the growth and survival of juvenile lumpfish in a two-month growth study. The results demonstrate the complex interactions of these water quality variables. The specific growth rate (SGR) of the lumpfish was progressively ...
    • Effect of Codend Circumference on the Size Selection of Square-Mesh Codends in Trawl Fisheries 

      Sala, Antonello; Herrmann, Bent; De Carlo, Francesco; Lucchetti, Alexandro; Brcic, Jure (Peer reviewed; Journal article; Tidsskriftsartikkel, 2016-07-29)
      It is well established that increasing mesh number in the circumference of a diamond-mesh trawl codend can reduce size selection for round fish, whereas selection for flat fish species is unaffected. This effect has also been documented in Mediterranean trawl fisheries. In contrast, no information is available with regard to the effect of increasing mesh number in the circumference of square-mesh ...
    • Effect of Codend Design and Postponed Bleeding on Hemoglobin in Cod Fillets Caught by Bottom Trawl in the Barents Sea Demersal Fishery 

      Jensen, Tonje Kristin; Tobiassen, Torbjørn Inge; Heia, Karsten; Møllersen, Kajsa; Larsen, Roger B.; Esaiassen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-03)
      Previous studies have reported that cod caught using a newly developed dual sequential codend showed significant reduction in external catch-related damage compared to cod caught by a conventional codend. In this study, it was investigated whether this new codend affects residual blood in cod fillets and/or mitigates the effect of postponed bleeding. Residual blood was assessed by measuring ...
    • Effect of codend mesh sizes on the size selectivity and exploitation pattern of cocktail shrimp (Trachypenaeus curvirostris) in shrimp trawl fishery of the South China Sea 

      Yang, Bingzhong; Herrmann, Bent (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-29)
      This study aims at improving fishery management by testing and comparing the size selectivity and exploitation pattern of diamond-mesh codends, with mesh sizes ranging from 25 to 54 mm, for cocktail shrimp (Trachypenaeus curvirostris) in the South China Sea (SCS). Beginning from 25 mm, the minimum mesh size regulated by the shrimp trawl fishery industry, we investigated how the mesh sizes of ...
    • Effect of Diet Supplemented With Rapeseed Meal or Hydrolysable Tannins on the Growth, Nutrition, and Intestinal Microbiota in Grass Carp (Ctenopharyngodon idellus) 

      Yao, Jianting; Chen, Peng; Ringø, Einar; Zhang, Gaigai; Huang, Zhongyuan; Hua, Xue-Ming (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-25)
      Grass carp (<i>Ctenopharyngodon idellus; n</i> = 320) were received four different diets for 56 days. The experimental diets were: fishmeal (FM) containing 10% fishmeal (without rapeseed meal), and rapeseed meal (RM) containing 50% rapeseed meal (without fishmeal), and two semi-purified diets either without (T0) or with 1.25% (T1) supplemental hydrolysable tannin. The approximate content of tannin ...
    • Effect of dietary components on the gut microbiota of aquatic animals. A never-ending story? 

      Ringø, Einar; Zhou, Zhigang; Vecino, Jose L. González; Wadsworth, Simon L.; Romero, Jaime; Krogdahl, Åshild; Olsen, Rolf Erik; Dimitroglou, Arkadios; Foey, Andrew David; Davies, Simon; Owen, Matthew A.G.; Lauzon, Hélène Liette; Martinsen, Lisbeth Løvmo; De Schryver, Peter; Bossier, Peter; Sperstad, Sigmund; Merrifield, Daniel Lee (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-07)
      It is well known that healthy gut microbiota is essential to promote host health and well-being. The intestinal microbiota of endothermic animals as well as fish are classified as autochthonous or indigenous, when they are able to colonize the host’s epithelial surface or are associated with the microvilli, or as allochthonous or transient (associated with digesta or are present in the lumen). ...
    • Effect of Extension Piece Design on Catch Patterns in a Mediterranean Bottom Trawl Fishery 

      Petetta, Andrea; Herrmann, Bent; Virgili, Massimo; Li Veli, Daniel; Brinkhof, Jesse; Lucchetti, Alessandro (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-18)
      The catch composition of bottom trawls is commonly refined and improved through changes in codend design. Measures like reducing the number of meshes in codend circumference or turning diamond netting by 90 degrees are well known to improve the size selectivity of fish species with rounded cross-sectional shape. Based on this we speculated whether the same measures, if applied in other parts of ...