Browsing Brage NMBU by Author "Snipen, Lars-Gustav"
Now showing items 1-20 of 22
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A stable core gut microbiota across fresh- to saltwater transition for farmed Atlantic salmon
Rudi, Knut; Angell, Inga Leena; Pope, Phillip; Vik, Jon Olav; Sandve, Simen Rød; Snipen, Lars-Gustav (Journal article; Peer reviewed, 2017) -
Amplicon clustering methods and the detection of core microbiota in honey bee gut
Barbakken, Annbjørg Helene Nygaard (Master thesis, 2019)Recent years decline in honey bee populations has lead to an increased interest in the study of their microbiota. In humans, a disturbance in the healthy gut microbiota is linked to several diseases, and because the ... -
Atlantic salmon raised with diets low in long-chain polyunsaturated n-3 fatty acids in freshwater have a Mycoplasma-dominated gut microbiota at sea
Jin, Yang; Angell, Inga Leena; Sandve, Simen Rød; Snipen, Lars-Gustav; Olsen, Yngvar; Rudi, Knut (Journal article; Peer reviewed, 2019) -
Benchmarking of metagenomic classification tools and storage stability of bioaerosol samples
Stenløkk, Kristina Severine Rudskjær (Master thesis, 2019)Air is a microbial habitat of crucial importance for public health. As such it is relevant for detection of potential epidemic or biothreat agents. The study of microbiological diversity in air through metagenomic analysis ... -
Bioinformatic approaches for the prediction of seafloor ecological state from Nanopore 16SrRNA gene data
Philip, Melcy (PhD thesis;2024:79, Doctoral thesis, 2024)The increasing anthropogenic pressures, particularly from industries and activities like intensive aquaculture affect marine benthic ecosystems. This context requires immediate implementation of frequent and effective ... -
Comparing K-mer based methods for improved classification of 16S sequences
Vinje, Hilde; Liland, Kristian Hovde; Almøy, Trygve; Snipen, Lars-Gustav (Journal article; Peer reviewed, 2015) -
Cost of resistance : stress tolerance and gene expression in wild type and mutant strains of Staphylococcus haemolyticus LMGT4071
Solberg, Kristin Kleivan (Master thesis, 2022)Several studies have shown that a bacteria’s development of resistance to an antimicrobial substance often comes with a cost related to their general fitness and adaptation to environmental changes. Further research is ... -
Effects of glucose availability in Lactobacillus sakei; metabolic change and regulation of the proteome and transcriptome
McLeod, Anette; Mosleth, Ellen Færgestad; Rud, Ida; Branco dos Santos, Filipe; Snipen, Lars-Gustav; Liland, Kristian Hovde; Axelsson, Lars (Journal article; Peer reviewed, 2017)Effects of glucose availability were investigated in Lactobacillus sakei strains 23K and LS25 cultivated in anaerobic, glucose-limited chemostats set at high (D = 0.357 h-1) and low (D = 0.045 h-1) dilution rates. We ... -
Evolution of the immune system influences speciation rates in teleost fishes
Malmstrøm, Martin; Matschiner, Michael; Tørresen, Ole Kristian; Star, Bastiaan; Snipen, Lars-Gustav; Hansen, Thomas F; Baalsrud, Helle Tessand; Nederbragt, Alexander Johan; Hanel, Reinhold; Salzburger, Walter; Stenseth, Nils Christian; Jakobsen, Kjetill Sigurd; Jentoft, Sissel (Journal article; Peer reviewed, 2016) -
fixedTimeEvents: An R package for the distribution of distances between discrete events in fixed time
Liland, Kristian Hovde; Snipen, Lars-Gustav (Peer reviewed; Journal article, 2016)When a series of Bernoulli trials occur within a fixed time frame or limited space, it is often interesting to assess if the successful outcomes have occurred completely at random, or if they tend to group together. One ... -
Identifying coevolution of class IIa bacteriocin and their immunity protein
Kroken, Gard (Master thesis, 2018)Class IIa bacteriocins are Antimicrobial peptides found in many lactic acid bacteria. Here they serve as a weapon against competing bacteria by causing cell leakage through pore-formation in the membrane. An immunity protein ... -
Investigating prevalence and geographical distribution of Mycoplasma sp. in the gut of Atlantic salmon (Salmo salar L.)
Raudstein, Mari (Master thesis, 2020)The fish gut microbiota has gotten considerable attention in recent years, and the microbes harboring the intestine of fish are thought to grant the host various effects related to size, metabolism, feeding behavior, and ... -
METASEED: a novel approach to full-length 16S rRNA gene reconstruction from short read data
Philip, Melcy; Rudi, Knut; Ormaasen, Ida; Angell, Inga Leena; Pettersen, Ragnhild; Keeley, Nigel B.; Snipen, Lars-Gustav (Peer reviewed; Journal article, 2024)Background With the emergence of Oxford Nanopore technology, now the on-site sequencing of 16S rRNA from environments is available. Due to the error level and structure, the analysis of such data demands some database of ... -
microclass: An R-package for 16S taxonomy classification
Liland, Kristian Hovde; Vinje, Hilde; Snipen, Lars-Gustav (Journal article; Peer reviewed, 2017)Background Taxonomic classification based on the 16S rRNA gene sequence is important for the profiling of microbial communities. In addition to giving the best possible accuracy, it is also important to quantify uncertainties ... -
micropan: An R-package for microbial pan-genomics
Snipen, Lars-Gustav; Liland, Kristian Hovde (Journal article; Peer reviewed, 2015) -
Prediction of high fecal propionate-to-butyrate ratios using 16S rRNA-based detection of bacterial groups with liquid array diagnostics
Hiseni, Pranvera; Snipen, Lars-Gustav; Wilson, Robert Charles; Furu, Kari; Hegge, Finn Terje; Rudi, Knut (Peer reviewed; Journal article, 2023) -
Rapid succession of actively transcribing denitrifier populations in agricultural soil during an anoxic spell
Liu, Binbin; Zhang, Xiaojun; Bakken, Lars; Snipen, Lars-Gustav; Frostegård, Åsa (Peer reviewed; Journal article, 2019)Denitrification allows sustained respiratory metabolism during periods of anoxia, an advantage in soils with frequent anoxic spells. However, the gains may be more than evened out by the energy cost of producing the ... -
Rapid succession of actively transcribing denitrifier populations in agricultural soil during an anoxic spell
Liu, Binbin; Zhang, Xiaojun; Bakken, Lars; Snipen, Lars-Gustav; Frostegård, Åsa (Peer reviewed; Journal article, 2019)Denitrification allows sustained respiratory metabolism during periods of anoxia, an advantage in soils with frequent anoxic spells. However, the gains may be more than evened out by the energy cost of producing the ... -
Recognizing plasmid-reads by machine learning and K-mer statistics
Liland, Jens Rasmus (Master thesis, 2019)The aim of this project was to investigate to what extent some machine learning methods are able to classify chromosome reads from plasmid reads based on K-mer statistics. Both short Illumina HiSeq 2500 reads and medium-length ... -
Swarm and UNOISE outperform DADA2 and Deblur for denoising high-diversity marine seafloor samples
Nilsen, Tonje; Snipen, Lars-Gustav; Angell, Inga Leena; Keeley, Nigel B.; Majaneva, Sanna Kristiina; Pettersen, Ragnhild; Rudi, Knut (Peer reviewed; Journal article, 2024)The performance of sequence variant resolution analytic tools for metabarcoding has not yet been adequately benchmarked for high-diversity environmental samples. We therefore evaluated the sequence variant tools DADA2, ...