Browsing Department of Biological Sciences by Title
Now showing items 1712-1731 of 2482
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Otolith “spawning zones” across multiple Atlantic cod populations: Do they accurately record maturity and spawning?
(Journal article; Peer reviewed, 2021)Specific changes identified in the otolith macrostructure of Northeast Arctic cod as “spawning zones” are presumed to represent spawning events, but recent experimental studies have challenged this relationship. Because ... -
Outdoor cycling activity affected by COVID-19 related epidemic-control-decisions
(Journal article; Peer reviewed, 2021-05-06)Aim: The lockdown of sports infrastructure due to the COVID-19 pandemic has substantially shifted people’s physical activity towards public green spaces. With Germany’s lockdown as one of the more severe governmentally ... -
Overlapping transcription initiation codes and promoter interpretation in vertebrate development and differentiation
(Doctoral thesis, 2015-01-05)A core promoter is a minimal region sufficient to direct the accurate initiation of transcription. Various core promoter elements have been discovered that recruit and position transcriptional machinery, which then initiates ... -
Overvåkingsprogram og kompetansehevingstiltak knyttet til vannkvalitet og fiskehelse i marine yngel- og settefiskanlegg (MarinVest)
(NIVA-rapport;6782, Research report, 2015)Prosjektet «Overvåkingsprogram og kompetansehevingstiltak knyttet til vannkvalitet og fiskehelse i marine yngel- og settefiskanlegg (MarinVest)».har blitt utført i samarbeid med industrideltagerne Sterling White Halibut ... -
The oxygen requirement of Atlantic salmon (Salmo salar L.) in the on-growing phase in sea cages
(Doctoral thesis, 2012-10-30)Atlantic salmon aquaculture is a successful and growing industry, with a global production of more than 1.4 million tonnes in 2010. In the on-growing phase, Atlantic salmon are normally kept in sea cages, where both the ... -
Oxygen variation within a seacage
(Master thesis, 2008-06-01)In recent years, fish welfare during aquaculture production has received increasing attention, and it has been suggested that welfare is threatened as larger seacages are developed. Larger seacages with higher stocking ... -
Pacific and Atlantic Lepeophtheirus salmonis (Krøyer, 1838) are allopatric subspecies: Lepeophtheirus salmonis salmonis and L. salmonis oncorhynchi subspecies novo
(Peer reviewed; Journal article, 2014-03-14)Background: The salmon louse Lepeophtheirus salmonis is a parasitic copepod that infects salmonids in the Pacific and Atlantic oceans. Although considered as a single species, morphological and biological differences have ... -
Palaeolimnological and sedimentary responses to Holocene forest retreat in the Scandes Mountains, west-central Sweden
(Peer reviewed; Journal article, 2004)A suite of analyses was performed on sediments accumulated during the last 10 700 years in Lake Spaime, a small, hydrologically open water body in the modem alpine tundra zone of the Scandes Mountains, west-central Sweden. ... -
Palaeolimnological responses of nine North African lakes in the CASSARINA Project to recent environmental changes and human impact detected by plant macrofossil, pollen, and faunal analyses
(Peer reviewed; Journal article, 2001)This paper presents multi-proxy palaeolimnological analyses from recent sediments in the nine CASSARINA lakes in northernmost Africa, three from each of Morocco, Tunisia, and Egypt. The lakes are diverse, ranging from ... -
Palaeovegetation and environment during Weichselian stadials and interstadials at Mamontovaya Kurja and Sokolova in the Pechora basin, northern Russia
(Master thesis, 2000)The vegetation and climate history of the Pechora area of northwestern Russia during the Early- and Mid Weichselian have been studied. Sediments from two sites have been analysed in this study; from Sokolova and Mamontovaya ... -
A paleoecological context to assess the development of oak forest in Colombia: A comment on Zorilla-Azcué, S., Gonzalez-Rodríguez, A., Oyama, K., González, M.A., & Rodríguez-Correa, H., The DNA history of a lonely oak: Quercus humboldtii phylogeography in the Colombian Andes. Ecology and Evolution 2021, doi: 10.100-2/ ece3.7529
(Journal article; Peer reviewed, 2022)The present “comment” on Zorilla-Azcué et al.’s paper “The DNA history of a lonely oak: Quercus humboldtii phylogeography in the Colombian Andes. Ecology and Evolution 2021, doi:10.100-2/ece3.7529” provides the paleoecological ... -
Palm fruit colours are linked to the broad-scale distribution and diversification of primate colour vision systems
(Journal article; Peer reviewed, 2020)A long-standing hypothesis in ecology and evolution is that trichromatic colour vision (the ability to distinguish red from green) in frugivorous primates has evolved as an adaptation to detect conspicuous (reddish) fruits. ... -
Pan-genome survey of the fish pathogen Yersinia ruckeri links accessory- and amplified genes to virulence
(Journal article; Peer reviewed, 2023)While both virulent and putatively avirulent Yersinia ruckeri strains exist in aquaculture environments, the relationship between the distribution of virulence-associated factors and de facto pathogenicity in fish remains ... -
A pan-Himalayan test of predictions on plant species richness based on primary production and water-energy dynamics
(Journal article; Peer reviewed, 2021)Spatial variation in plant species diversity is well-documented but an overarching first-principles theory for diversity variation is lacking. Chemical energy expressed as Net Primary Production (NPP) is related to a ... -
Pancrustacean Evolution Illuminated by Taxon-Rich Genomic-Scale Data Sets with an Expanded Remipede Sampling
(Peer reviewed; Journal article, 2019-07-04)The relationships of crustaceans and hexapods (Pancrustacea) have been much discussed and partially elucidated following the emergence of phylogenomic data sets. However, major uncertainties still remain regarding the ... -
Pankreassykdom; en gjennomgang av dagens kunnskaper, rapporter, tiltak og forvaltning.
(Master thesis, 2013-10-16)Pankreassykdom (PD) er en svært smittsom virussykdom som opptrer hos Atlantisk laks (Salmo salar L.) og regnbueørret (Oncorhynchus mykiss) i oppdrett. PD forårsakes av salmonid alphavirus (SAV). Hensikten med denne oppgaven ... -
The pantophysin gene and its relationship with survival in early life stages of Atlantic cod: Pantophysin in Atlantic cod
(Journal article; Peer reviewed, 2020)Genetic markers are widely used in fisheries management around the world. While the genetic structure and markers selected are usually based on samples from the wild, very few controlled experiments have been carried out ... -
Paramoeba perurans and AGD in Norwegian aquaculture: effect of freshwater treatment against AGD on gill health in commercial production of Atlantic salmon (Salmo salar L.) and experimental testing of virulence of Paramoeba perurans
(Master thesis, 2021-06-11)Gill diseases are a major and increasing challenge with respect to fish health and welfare during the marine stage in Atlantic salmon farming. The causative agents for gill diseases are complex, and several pathogens are ... -
Parasite development affect dispersal dynamics; infectivity, activity and energetic status in cohorts of salmon louse copepodids
(Journal article; Peer reviewed, 2020)The salmon louse, Lepeophtheirus salmonis, is a parasitic copepod infecting wild and farmed salmonid fishes in the northern hemisphere. It has a direct lifecycle with a planktonic dispersal phase and an infective copepodid ... -
Parasite intensity is driven by temperature in a wild bird
(Peer reviewed; Journal article, 2019)Increasing awareness that parasitism is an essential component of nearly all aspects of ecosystem functioning, as well as a driver of biodiversity, has led to rising interest in the consequences of climate change in terms ...