Blar i Department of Biological Sciences på tittel
Viser treff 1719-1738 av 2374
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Phenology and Environmental Control of Phytoplankton Blooms in the Kong Håkon VII Hav in the Southern Ocean
(Journal article; Peer reviewed, 2021)Knowing the magnitude and timing of pelagic primary production is important for ecosystem and carbon sequestration studies, in addition to providing basic understanding of phytoplankton functioning. In this study we use ... -
Phenology and Spatial Dynamics of Cacopsylla melanoneura (Homoptera:Psyllidae) in Western Norway, an Insect Vector for Apple Proliferation
(Master thesis, 2017-06-21)In the last decade, the plant disease apple proliferation has caused problems for Norwegian fruit farmers, resulting in smaller and un-tasty apples, rendering them unsellable. The disease is caused by the phytoplasma ... -
Phenotypic and genetic characterization of Piscirickettsia salmonis from Chilean and Canadian salmonids
(Peer reviewed; Journal article, 2016-03-15)Background. The study presents the phenotypic and genetic characterization of selected P. salmonis isolates from Atlantic salmon and rainbow trout suffering from SRS (salmonid rickettsial septicemia) in Chile and in Canada. ... -
Phenotypic plasticity in Atlantic herring (Clupea harengus) juveniles reared at two different salinities
(Master thesis, 2015-06-01)A common garden experiment with juvenile herring (Clupea harengus L.) was carried out to investigate the influence of salinity on different phenotypic traits commonly used to investigate population structure in this species. ... -
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 ... -
Photosynthetic light requirement near the theoretical minimum detected in Arctic microalgae
(Journal article; Peer reviewed, 2024)Photosynthesis is one of the most important biological processes on Earth, providing the main source of bioavailable energy, carbon, and oxygen via the use of sunlight. Despite this importance, the minimum light level ... -
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 ...