Blar i Vitenskapelige artikler på forfatter "Eiken, Hans Geir"
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Antimicrobial resistance—Do we share more than companionship with our dogs?
Røken, Mari; Forfang, Kristin; Wasteson, Yngvild; Haaland, Anita Haug; Eiken, Hans Geir; Hagen, Snorre; Bjelland, Ane Mohn (Peer reviewed; Journal article, 2022-05-21)Aims To investigate and compare antimicrobial resistance genes (ARGs) in faeces from cohabiting dogs and owners. Methods and Results DNA from faecal samples from 35 dogs and 35 owners was screened for the presence of 34 ... -
Comparison of grizzly bear hair-snag and scat sampling along roads to inform wildlife population monitoring
Phoebus, Isobel; Boulanger, John; Eiken, Hans Geir; Fløystad, Ida; Graham, Karen; Hagen, Snorre; Sorensen, Anja; Stenhouse, Gordon (Peer reviewed; Journal article, 2020-09-16)Wildlife managers conduct population inventories to monitor species, particularly those at-risk. Although costly and time consuming, grid-based DNA hair-snag sampling has been the standard protocol for grizzly bear inventories ... -
Faecal pollution affects abundance and diversity of aquatic microbial community in anthropo-zoogenically influenced lotic ecosystems
Paruch, Lisa; Paruch, Adam; Eiken, Hans Geir; Sørheim, Roald (Journal article; Peer reviewed, 2019-12-19)The aquatic microbiota is known to be an important factor in the sustainability of the natural water ecosystems. However, the microbial community also might include pathogens, which result in very serious waterborne diseases ... -
Genetic analysis indicates spatial-dependent patterns of sex-biased dispersal in Eurasian lynx in Finland
Herrero, Annika; Klutsch, Cornelya; Holmala, Katja; Maduna, Simo; Kopatz, Alexander; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2021-02-19)Conservation and management of large carnivores requires knowledge of female and male dispersal. Such information is crucial to evaluate the population’s status and thus management actions. This knowledge is challenging ... -
Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system
Klutsch, Cornelya; Maduna, Simo; Polikarpova, Natalia; Forfang, Kristin; Aspholm, Paul Eric; Nyman, Tommi; Eiken, Hans Geir; Amundsen, Per-Arne; Hagen, Snorre (Journal article; Peer reviewed, 2019-04-29)Habitat discontinuity, anthropogenic disturbance, and overharvesting have led to population fragmentation and decline worldwide. Preservation of remaining natural genetic diversity is crucial to avoid continued genetic ... -
Genetic evidence of female kin clusters in a continuous population of a solitary carnivore, the Eurasian lynx
Holmala, Katja; Herrero, Annika; Kopatz, Alexander; Schregel, Julia; Eiken, Hans Geir; Hagen, Snorre (Journal article; Peer reviewed, 2018)Large terrestrial carnivores can sometimes display strong family bonds affecting the spatial distribution of related individuals. We studied the spatial genetic relatedness and family structure of female Eurasian lynx, ... -
Genetic substructure and admixture as important factors in linkage disequilibrium-based estimation of effective number of breeders in recovering wildlife populations
Kopatz, Alexander; Eiken, Hans Geir; Schregel, Julia; Aspi, Jouni; Kojola, Ilpo; Hagen, Snorre (Journal article; Peer reviewed, 2017)The number of effective breeders (Nb) and effective population size (Ne) are population parameters reflective of evolutionary potential, susceptibility to stochasticity, and viability. We have estimated these parameters ... -
Genome- and transcriptome-derived microsatellite loci in lumpfish Cyclopterus lumpus: Molecular tools for aquaculture, conservation and fisheries management
Maduna, Simo; Vivian-Smith, Adam; Jónsdóttir, Ólöf Dóra Bartels; Imsland, Albert; Klutsch, Cornelya; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2020-01-17)The lumpfish Cyclopterus lumpus is commercially exploited in numerous areas of its range in the North Atlantic Ocean, and is important in salmonid aquaculture as a biological agent for controlling sea lice. Despite the ... -
Harvest is associated with the disruption of social and finescale genetic structure among matrilines of a solitary large carnivore
Frank, Shane; Pelletier, Fanie; Kopatz, Alexander; Bourret, Audrey; Garant, Dany; Swenson, Jon; Eiken, Hans Geir; Hagen, Snorre; Zedrosser, Andreas (Peer reviewed; Journal article, 2020-11-27)Harvest can disrupt wildlife populations by removing adults with naturally high survival. This can reshape sociospatial structure, genetic composition, fitness, and potentially affect evolution. Genetic tools can detect ... -
Heritability of head size in a hunted large carnivore, the brown bear (Ursus arctos)
Rivrud, Inger Maren; Frank, Shane; Bischof, Richard; Mysterud, Atle; Steyaert, Sam; Hertel, Anne Gabriela; Hagen, Snorre; Eiken, Hans Geir; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2019)Wild animal populations experience selection pressures from both natural and anthropogenic sources. The availability of extensive pedigrees is increasing along with our ability to quantify the heritability and evolvability ... -
Large-scale genetic admixture suggests high dispersal in an insect pest, the apple fruit moth
Elameen, Abdelhameed; Klutsch, Cornelya; Fløystad, Ida; Knudsen, Geir; Tasin, Marco; Hagen, Snorre; Eiken, Hans Geir (Peer reviewed; Journal article, 2020-08-12)Knowledge about population genetic structure and dispersal capabilities is important for the development of targeted management strategies for agricultural pest species. The apple fruit moth, Argyresthia conjugella ... -
Mitogenomics of the suborder Cottoidei (Teleostei: Perciformes): Improved assemblies, mitogenome features, phylogeny, and ecological implications
Maduna, Simo; Vivian-Smith, Adam; Jónsdóttir, Ólöf Dóra Bartels; Imsland, Albert; Klutsch, Cornelya; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2022-03-02)We determined the mitogenome of Cyclopterus lumpus using a hybrid sequencing approach, and another four closely related species in the Liparidae based on available next-generation sequence data. We found that the mitogenome ... -
Monitoring of the Apple Fruit Moth: Detection of Genetic Variation and Structure Applying a Novel Multiplex Set of 19 STR Markers
Elameen, Abdelhameed; Eiken, Hans Geir; Fløystad, Ida; Knudsen, Geir; Hagen, Snorre (Journal article; Peer reviewed, 2018-04-08)The apple fruit moth Argyresthia conjugella (Lepidoptera, Yponomeutidae) is a seed predator of rowan (Sorbus aucuparia) and is distributed in Europe and Asia. In Fennoscandia (Finland, Norway and Sweden), rowan fruit ... -
Novel insight into lepidopteran phylogenetics from the mitochondrial genome of the apple fruit moth of the family Argyresthiidae
Elameen, Abdelhameed; Maduna, Simo; Magerøy, Melissa; van Eerde, André; Knudsen, Geir; Hagen, Snorre; Eiken, Hans Geir (Peer reviewed; Journal article, 2024-01-02)Background The order Lepidoptera has an abundance of species, including both agriculturally beneficial and detrimental insects. Molecular data has been used to investigate the phylogenetic relationships of major subdivisions ... -
Sea ice reduction drives genetic differentiation among Barents Sea polar bears
Maduna, Simo; Aars, Jon; Fløystad, Ida; Klutsch, Cornelya; Fiskebeck, Eve Marie Louise Zeyl; Wiig, Øystein; Ehrich, Dorothee; Andersen, Magnus; Bachmann, Lutz; Derocher, Andrew E.; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2021-09-08)Loss of Arctic sea ice owing to climate change is predicted to reduce both genetic diversity and gene flow in ice-dependent species, with potentially negative consequences for their long-term viability. Here, we tested for ... -
Seasonal dynamics of lotic bacterial communities assessed by 16S rRNA gene amplicon deep sequencing
Paruch, Lisa; Paruch, Adam; Eiken, Hans Geir; Skogen, Monica; Sørheim, Roald (Peer reviewed; Journal article, 2020-10-02)Aquatic microbial diversity, composition, and dynamics play vital roles in sustaining water ecosystem functionality. Yet, there is still limited knowledge on bacterial seasonal dynamics in lotic environments. This study ... -
Sex-specific genetic analysis indicates low correlation between demographic and genetic connectivity in the Scandinavian brown bear (Ursus arctos)
Schregel, Julia; Kopatz, Alexander; Eiken, Hans Geir; Swenson, Jon; Hagen, Snorre (Peer reviewed; Journal article, 2017-07-03)The degree of gene flow within and among populations, i.e. genetic population connectivity, may closely track demographic population connectivity. Alternatively, the rate of gene flow may change relative to the rate of ... -
Sociodemographic factors modulate the spatial response of brown bears to vacancies created by hunting
Frank, Shane C.; Leclerc, Martin; Pelletier, Fanie; Rosell, Frank Narve; Swenson, Jon; Bischof, Richard; Kindberg, Jonas; Eiken, Hans Geir; Hagen, Snorre; Zedrosser, Andreas (Journal article; Peer reviewed, 2017-11-13) -
Successful Production and Ligninolytic Activity of a Bacterial Laccase, Lac51, Made in Nicotiana benthamiana via Transient Expression
van Eerde, André; Varnai, Aniko; Wang, Yanliang; Paruch, Lisa; Jameson, John-Kristian; Qiao, Fen; Eiken, Hans Geir; Su, Hang; Eijsink, Vincent; Clarke, Jihong Liu (Peer reviewed; Journal article, 2022-05-13)Giant panda could have bamboo as their exclusive diet for about 2 million years because of the contribution of numerous enzymes produced by their gut bacteria, for instance laccases. Laccases are blue multi-copper oxidases ...