Browsing Department of Biological Sciences by Title
Now showing items 1624-1643 of 2235
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Photo-enhanced toxicity of crude oil on early developmental stages of Atlantic cod (Gadus morhua)
(Journal article; Peer reviewed, 2022)Photo-enhanced toxicity of crude oil is produced by exposure to ultraviolet (UV) radiation. Atlantic cod (Gadus morhua) embryos were exposed to crude oil with and without UV radiation (290–400 nm) from 3 days post fertilization ... -
Photoreception and transcriptomic response to light during early development of a teleost with a life cycle tightly controlled by seasonal changes in photoperiod
(Journal article; Peer reviewed, 2022)Light cues vary along the axis of periodicity, intensity and spectrum and perception of light is dependent on the photoreceptive capacity encoded within the genome and the opsins expressed. A global approach was taken to ... -
A photovoice assessment for illuminating the role of inland fisheries to livelihoods and the local challenges experienced through the lens of fishers in a climate-driven lake of Malawi
(Journal article; Peer reviewed, 2022)Small-scale inland capture fisheries provide an important source of nutritious food, employment and income to millions of people in developing countries, particularly in rural environments where limited alternatives exist. ... -
Phylogenetic analyses of Candidatus Branchiomonas cysticola refine the taxonomic classification of Betaproteobacteria associated with epitheliocystis in fish
(Journal article; Peer reviewed, 2023)Candidatus Branchiomonas cysticola is recognized as the most prevalent bacterial agent causing epitheliocystis in Atlantic salmon (Salmo salar). Based on its partial 16S rRNA sequence, the bacterium has previously been ... -
Phylogenetic analyses of Norwegian Tenacibaculum strains confirm high bacterial diversity and suggest circulation of ubiquitous virulent strains
(Journal article; Peer reviewed, 2021)Tenacibaculosis is a bacterial ulcerative disease affecting marine fish and represents a major threat to aquaculture worldwide. Its aetiological agents, bacteria belonging to the genus Tenacibaculum, have been present in ... -
Phylogenetic and functional diverse ANME-1 thrive in Arctic hydrothermal vents
(Journal article; Peer reviewed, 2022)The methane-rich areas, the Loki's Castle vent field and the Jan Mayen vent field at the Arctic Mid Ocean Ridge (AMOR), host abundant niches for anaerobic methane-oxidizers, which are predominantly filled by members of the ... -
Phylogenetic and histological analysis of Candidatus Branchiomonas cysticola associated with epitheliocystis in farmed and wild salmonids in Norway
(Master thesis, 2022-11-30)Gill disease is one of the main challenges in Norwegian aquaculture, with the bacterial disease epitheliocystis playing a crucial role in both marine and freshwater reservoirs. The pathology of epitheliocystis is characterized ... -
Phylogenomic and functional analyses of salmon lice aquaporins uncover the molecular diversity of the superfamily in Arthropoda
(Peer reviewed; Journal article, 2015-08-19)Background An emerging field in biomedical research is focusing on the roles of aquaporin water channels in parasites that cause debilitating or lethal diseases to their vertebrate hosts. The primary vectorial agents are ... -
Phylogeny and systematics of Caudofoveata (Mollusca, Aplacophora)
(Doctoral thesis, 2018-06-07)Caudofoveata is by far the least known group of molluscs. The shell-less, wormshaped caudofoveate molluscs are characterized by a mantle covered in calcareous sclerites, giving them a distinctive, shiny appearance. ... -
Phylogeny and taxonomy of Polymastiidae (Porifera: Demospongiae)
(Doctoral thesis, 2016-11-22)This thesis focuses on the family Polymastiidae, one of the key taxa of sponges (phylum Porifera), an important component of marine benthos in the polar and temperate seas. The current taxonomy of this family is based on ... -
Phylogeny, Taxonomy and Evolution of the Astrophorida (Porifera, Demospongiae)
(Doctoral thesis, 2010-06-04)The Astrophorida (Porifera, Demospongiae) currently represent ca 660 extant species worldwide. In tropical and parts of warm temperate waters they are common at quite shallow depths, while in boreal/antiboreal and Arctic ... -
Phylogeography and host specificity of Pasteurellaceae pathogenic to sea-farmed fish in the north-east Atlantic
(Journal article; Peer reviewed, 2023)The present study was undertaken to address the recent spate of pasteurellosis outbreaks among sea-farmed Atlantic salmon (Salmo salar) in Norway and Scotland, coinciding with sporadic disease episodes in lumpfish (Cyclopterus ... -
Phylogeography of Phycodrys rubens (Linnaeus) batters from mainland Norway and Svalbard based on nuclear and mtDNA sequences and microsatellites
(Master thesis, 2014-04-01)Phycodrys rubens is a common cold temperate red macroalga in the North Atlantic, a region with a diverse natural history that has shaped the phylogeography for many species. In this study microsatellite loci as well as ... -
Physical and nutrient stimuli differentially modulate gut motility patterns, gut transit rate, and transcriptome in an agastric fish, the ballan wrasse
(Journal article; Peer reviewed, 2021-02-11)The effects of nutrient and mechanical sensing on gut motility and intestinal metabolism in lower vertebrates remains largely unknown. Here we present the transcriptome response to luminal stimulation by nutrients and an ... -
The physical damage of climbing activity on sandstone lichen cover
(Journal article; Peer reviewed, 2021)Climbing activities affect cliff site species. With cliff sites harbouring unique species communities, the rise in popularity of outdoor climbing activities is a major threat. In this study, we assessed a previously unclimbed ... -
Physical enrichment research for captive fish: Time to focus on the DETAILS
(Journal article; Peer reviewed, 2021)Growing research effort has shown that physical enrichment (PE) can improve fish welfare and research validity. However, the inclusion of PE does not always result in positive effects and conflicting findings have highlighted ... -
Physiological and flesh quality consequences of pre-mortem crowding stress in Atlantic mackerel (Scomber scombrus)
(Journal article; Peer reviewed, 2020-02-13)In commercial wild capture pelagic fisheries it is common practice to crowd catches to high densities to allow efficient pumping onboard. Crowding during the final stages of purse seine capture for small pelagic species ... -
Physiological and molecular mechanisms of oocyte hydration in an evolutionary old teleost, Atlantic herring (Clupea harengus)
(Doctoral thesis, 2008-04-11)This work investigated physiological and molecular mechanisms of oocyte hydration in Atlantic herring (Clupea harengus). Both inorganic and organic solutes were found to be important solutes involved in the hydration ... -
Physiological and molecular responses to environmental pollutants in Atlantic cod (Gadus morhua) : Characterization of the aryl hydrocarbon receptor signaling pathway and underlying mechanisms of crude oil toxicity
(Doctoral thesis, 2021-03-05)Environmental pollutants are harmful substances that can interfere and disrupt numerous physiological processes. Different cellular defence mechanisms are therefore crucial for both detecting pollutants and coordinate the ... -
Physiological characterization of a novel strain within Rhodobacteraceae, isolated from a biofilm sample on a barite chimney at the Loki´s Castle Vent Field.
(Master thesis, 2016-10-03)Strain M was isolated from a biofilm found on top of one of the barite chimney at Loki´s Castle Vent Field (73°30´N and 8°E) in the Norwegian-Greenland Sea. A polyphasic characterization, including physical and phylogenetic ...