Browsing Articles by Subject "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923"
Now showing items 1-20 of 123
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A common-garden experiment to quantify evolutionary processes in copepods: the case of emamectin benzoate resistance in the parasitic sea louse Lepeophtheirus salmonis
(Journal article; Peer reviewed, 2014-05-19)Background The development of pesticide resistance represents a global challenge to food production. Specifically for the Atlantic salmon aquaculture industry, parasitic sea lice and their developing resistance to delousing ... -
A comparison of gene transcription profiles of domesticated and wild Atlantic salmon (Salmo salar L.) at early life stages, reared under controlled conditions
(Journal article; Peer reviewed, 2014-10-09)Background Atlantic salmon have been subject to domestication for approximately ten generations, beginning in the early 1970s. This process of artificial selection will have created various genetic differences between ... -
A new intracellular bacterium, Candidatus Similichlamydia labri sp. nov. (Chlamydiaceae) producing epitheliocysts in ballan wrasse, Labrus bergylta (Pisces, Labridae)
(Journal article; Peer reviewed, 2014-11-22)Certain wrasse species (Labridae) are used as cleaner fish in salmon farms on the Norwegian coast, reducing salmon louse intensities. The pathogen repertoire of wrasse in Norway is poorly known, and the objective of the ... -
Additive effects of enhanced ambient ultraviolet B radiation and increased temperature on immune function, growth and physiological condition of juvenile (parr) Atlantic Salmon, Salmo salar
(Journal article; Peer reviewed, 2010-09-29)Climate change models predict increased ultraviolet B (UVB) radiation levels due to stratospheric ozone depletion and global warming. In order to study the impact of these two environmental stressors acting simultaneously ... -
Amoebic gill disease due to Paramoeba perurans in ballan wrasse (Labrus bergylta)
(Journal article; Peer reviewed, 2013-07-11)Ballan wrasse (Labrus bergylta) is cultured for the use as cleaner fish in Atlantic salmon farms. A low level of mortality was experienced in ballan wrasse broodstock tanks during spawning. Examined moribund and clinically ... -
Anaesthesia of Atlantic halibut (Hippoglossus hippoglossus) – Effect of pre-anaesthetic sedation, and importance of body weight and water temperature
(Journal article; Peer reviewed, 2010-11-30)The efficacy of the anaesthetic agents benzocaine, metacaine (MS-222), metomidate, 2-phenoxyethanol, quinaldine and isoeugenol was studied in Atlantic halibut (Hippoglossus hippoglossus). Fish with an average body weight ... -
Antarctic krill swarm characteristics in the Southeast Atlantic sector of the Southern Ocean
(Journal article; Peer reviewed, 2012-09-28)Knowledge about swarm dynamics and underlying causes is essential to understand the ecology and distribution of Antarctic krill Euphausia superba. We collected acoustic data and key environmental data continuously across ... -
Antibiotic uptake by cultured Atlantic cod leucocytes and effect on intracellular Francisella noatunensis subsp. noatunensis replication
(Journal article; Peer reviewed, 2014-02-04)The granuloma disease caused by Francisella noatunensis subsp. noatunensis in farmed Atlantic cod has not been successfully treated by use of antibacterials, even when antibacterial resistance testing indicates a sufficient ... -
Antimicrobial susceptibility of Francisella noatunensis subsp. noatunensis strains isolated from Atlantic cod Gadus morhua in Norway
(Journal article; Peer reviewed, 2012-02-17)A total of 30 isolates of Francisella noatunensis subsp. noatunensis isolated from Atlantic cod Gadus morhua L. were tested for susceptibility, in the form of minimal inhibitory concentration (MIC) values, against the ... -
Atlantic salmon (Salmo salar L.) post-smolts challenged two or nine weeks after seawater-transfer show differences in their susceptibility to salmonid alphavirus subtype 3 (SAV3)
(Journal article; Peer reviewed, 2016-04-11) -
B2 protein from betanodavirus is expressed in recently infected but not in chronically infected fish
(Journal article; Peer reviewed, 2009-02-12)Betanodavirus infects both larvae and juvenile fish and can cause the disease viral encephalopathy and retinopathy (VER). During an acute outbreak of VER, infected individuals display several clinical signs of infection, ... -
Bernard Megrey: pioneer of Comparative Marine Ecosystem analyses
(Journal article; Peer reviewed, 2012-07-12)The MEPS Theme Section on ‘Comparative Analysis of Marine Fisheries Production’ is dedicated to Dr. Bernard Megrey. Dr. Megrey was well known for comparative studies of ecosystems, but his contributions to science were ... -
Birth-date selection in early life stages of plaice Pleuronectes platessa in the eastern Irish Sea (British Isles)
(Journal article; Peer reviewed, 2007-09-13)For species with extended spawning seasons, short periods of beneficial conditions often lead to disproportionate survival of sub-sets of the offspring. This has been demonstrated for freshwater fish and for marine pelagic ... -
'Cand. Actinochlamydia clariae' gen. nov., sp. nov., a Unique Intracellular Bacterium Causing Epitheliocystis in Catfish (Clarias gariepinus) in Uganda
(Journal article; Peer reviewed, 2013-06-24)Background and Objectives: Epitheliocystis, caused by bacteria infecting gill epithelial cells in fish, is common among a large range of fish species in both fresh-and seawater. The aquaculture industry considers epitheliocystis ... -
Cardiac responses to elevated seawater temperature in Atlantic salmon
(Journal article; Peer reviewed, 2014-02-21)Background Atlantic salmon aquaculture operations in the Northern hemisphere experience large seasonal fluctuations in seawater temperature. With summer temperatures often peaking around 18-20°C there is growing concern ... -
Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment
(Journal article; Peer reviewed, 2014-10-07)Studying the sublethal effects of catch-and-release (C&R) is challenging, as there are several potential sources of bias. For example, if behavioural alterations immediately after the release event are to be studied, ... -
Climate Change and Genetic Structure of Leading Edge and Rear End Populations in a Northwards Shifting Marine Fish Species, the Corkwing Wrasse (Symphodus melops)
(Journal article; Peer reviewed, 2013-06-26)One mechanism by which marine organisms may respond to climate shifts is range shifts. The corkwing wrasse (Symphodus melops) is a temperate fish species, inhabiting the coasts of Europe, that show strong indications of ... -
Comparative susceptibility of turbot, halibut, and cod yolk-sac larvae to challenge with Vibrio spp.
(Journal article; Peer reviewed, 2010-02-24)In intensive aquaculture systems, high mortalities are frequently observed during the early life stages of marine fish. The aim of this study was to investigate differences in the susceptibility of turbot Scophthalmus ... -
Copepods enhance nutritional status, growth and development in Atlantic cod (Gadus morhua L.) larvae – can we identify the underlying factors?
(Journal article; Peer reviewed, 2015-05-19)The current commercial production protocols for Atlantic cod depend on enriched rotifers and Artemia during first-feeding, but development and growth remain inferior to fish fed natural zooplankton. Two experiments were ... -
Coping with Unpredictability: Dopaminergic and Neurotrophic Responses to Omission of Expected Reward in Atlantic Salmon (Salmo salar L.)
(Journal article; Peer reviewed, 2014-01-17)Comparative studies are imperative for understanding the evolution of adaptive neurobiological processes such as neural plasticity, cognition, and emotion. Previously we have reported that prolonged omission of expected ...