Blar i NIBIO Brage på forfatter "Hagen, Snorre"
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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 ... -
Loss of species and genetic diversity during colonization: Insights from acanthocephalan parasites in northern European seals
Sromek, Ludmila; Ylinen, Eeva; Kunnasranta, Mervi; Maduna, Simo; Sinisalo, Tuula; Michell, Craig T.; Kovacs, Kit M.; Lydersen, Christian; Ieshko, Evgeny; Andrievskaya, Elena; Alexeev, Vyacheslav; Leidenberger, Sonja; Hagen, Snorre; Nyman, Tommi (Peer reviewed; Journal article, 2023-10-19)Studies on host–parasite systems that have experienced distributional shifts, range fragmentation, and population declines in the past can provide information regarding how parasite community richness and genetic diversity ... -
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 ... -
Monitoring of the Pasvik-Inari brown bear (Ursus arctos) population in 2023 using hair traps
Kniha, David; Aspholm, Paul Eric; Fløystad, Ida; Hansen, Ane-Sofie; Søvik, Ingrid Helle; Magga, Sari; Randa, Rolf; Baklid, Lisbet H.; Ollila, Tuomo; Hagen, Snorre; Eiken, Hans Geir (NIBIO Rapport, Research report, 2024)Since 2005, the population of the trans-border brown bear (Ursus arctos) in Trilateral Park Pasvik-Inari (Norway-Finland-Russia) has been monitored by using genetic analyses of hair and faeces collected randomly in the ... -
Monitoring of the Pasvik-Inari-Pechenga brown bear (Ursus arctos) population in 2019 using hair trap
Beddari, Benedicte Lissner; Ogurtsov, Sergey; Magga, Sari; Kangasniemi, Jaru; Fløystad, Ida; Søvik, Inger; Randa, Rolf; Ollila, Leif E.; Lindgren, Vetle; Bakke, Beate Banken; Beddari, Vilde; Polikarpova, Natalia; Ollila, Tuomo; Hagen, Snorre; Eiken, Hans Geir (NIBIO Rapport;6(61) 2020, Research report, 2020-04)Siden 2005 har populasjonen av grenseoverskridene brunbjørn (Ursus arctos) i Trilateral Park Pasvik-Inari-Pechenga (Norge-Finland-Russland) blitt overvåket ved å bruke genetiske analyser av hår og ekskrement-prøver samlet ... -
Monitoring of the Pasvik-Inari-Pechenga brown bear population in 2007 and 2011 using hair-trapping
Kopatz, Alexander; Eiken, Hans Geir; Aspholm, Paul Eric; Tobiassen, Camilla; Bakke, Beate Banken; Schregel, Julia; Ollila, Tuomo; Makarova, Olga; Polikarpova, Natalia; Chizhov, Vladimir; Hagen, Snorre (Bioforsk rapport;6(148) 2011, Research report, 2011-12-22)The trans-border brown bear population of Pasvik-Inari-Pechenga (Norway-Finland-Russia) has been monitored using genetic analyses of feces collection since 2005. In addition in 2007, hair traps were systematically placed ... -
Monitoring of the Pasvik-Inari-Pechenga brown bear population in 2015 using hair-trapping
Aarnes, Siv; Kopatz, Alexander; Eiken, Hans Geir; Schregel, Julia; Aspholm, Paul Eric; Ollila, Tuomo; Makarova, Olga; Polikarpova, Natalia; Chizhov, Vladimir; Ogurtcov, Sergey; Hagen, Snorre (NIBIO Rapport;1(69), Research report, 2015)The trans-border brown bear population of Pasvik-Inari-Pechenga (Norway-Finland-Russia) has been monitored using genetic analyses of feces collection since 2005. In addition, in 2007 and 2011, hair traps were systematically ... -
Niche construction mediates climate effects on recovery of tundra heathlands after extreme event
Gonzalez, Victoria; Lindgård, Bente; Reiersen, Rigmor; Hagen, Snorre; Bråthen, Kari Anne (Peer reviewed; Journal article, 2021-02-04)Climate change is expected to increase the frequency and intensity of extreme events in northern ecosystems. The outcome of these events across the landscape, might be mediated by species effects, such as niche construction, ... -
Nivåer av tungmetaller og PCBer i elgkjøtt fra Sør-Varanger 2020
Aspholm, Paul Eric; Beddari, Benedicte; Søvik, Ingrid; Fløistad, Ida Marie Bardalen; Englund, Monica Strasser; Enge, Ellen Katrin; Vadset, Marit; Heimstad, Elbjørg Sofie; Hagen, Snorre (NIBIO Rapport, Research report, 2023)Under høstjakta på elg (Alces alces) i 2020 ble det tatt vevsprøver til analyser av tungmetaller og PCB. Tungmetallprøver ble tatt av 24 individer; 4 hunnkalver, 4 hannkalver, 3 hanner av åringer og 13 okser (voksne hanner). ... -
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 ... -
Påvisning av bjørn og andre rovdyr i reinbeitedistrikt Beahceveai/Pasvik 5A/5C
Aarnes, Siv; Kopatz, Alexander; Aspholm, Paul Eric; Schregel, Julia; Solem, Arnstein; Sotkajærvi, Tom; Eiken, Hans Geir; Hagen, Snorre (Research report, 2015)Ved bruk av 10 hårfeller ble det påvist 5 ulike bjørn i kalvingslandet til reinbeitedistrikt 5A/5C fra 15 april til slutten av juni 2015. Det ble også observert individer og sportegn av jerv, gaupe og kongeørn i kalvingslandet. ... -
Påvisning av brunbjørn i den nordlige delen av Pasvikdalen i 2016 ved bruk av hårfeller og DNA analyse
Kopatz, Alexander; Eiken, Hans Geir; Randa, Rolf; Sotkajærvi, Egon; Aspholm, Paul Eric; Fløystad, Ida; Schregel, Julia; Aarnes, Siv; Hagen, Snorre (NIBIO Rapport;2(160) 2016, Research report, 2017-01-05)Brunbjørn bestanden I Pasvikdalen I Sør Varanger I Finnmark har vært overvåket med feltinnsamling av ekskrementer og hår til DNA analyse siden 2005. I 2007, 2011 og 1015 ble hårfeller systematisk plassert i det trilaterale ... -
Populasjonsovervåking av brunbjørn. DNA-analyse av prøver innsamlet i Norge i 2013
Aarnes, Siv; Tobiassen, Camilla; Brøseth, Henrik; Bakke, Beate Banken; Hansen, Berit; Spachmo, Bård; Hagen, Snorre; Eiken, Hans Geir (Bioforsk rapport;9(48) 2014, Research report, 2014)I 2013 ble det for femte år på rad samlet inn prøver med antatt opphav fra brunbjørn (Ursus arctos) gjennom det nasjonale overvåkingsprogrammet for rovvilt i Norge. Av de 1222 prøvene som ble samlet inn i 2013 var 806 ... -
Populasjonsovervåking av brunbjørn. DNA-analyse av prøver innsamlet i Norge i 2015
Aarnes, Siv; Tobiassen, Camilla; Brøseth, Henrik; Bakke, Beate Banken; Eiken, Hans Geir; Hagen, Snorre (NIBIO Rapport;2(56) 2016, Research report, 2016-04-15)Det nasjonale overvåkningsprogrammet for rovvilt i Norge har i 2015 samlet inn prøver med antatt opphav fra brunbjørn (Ursus arctos) for syvende år på rad. Totalt ble det samlet inn 1 293 prøver i 2015 (860 ekskrementprøver, ... -
Range-wide whole-genome resequencing of the brown bear reveals drivers of intraspecies divergence
de Jong, Menno; Niamir, Aidin; Wolf, Magnus; Kitchener, Andrew C.; Lecomte, Nicolas; Seryodkin, Ivan V.; Fain, Steven R.; Hagen, Snorre; Saarma, Urmas; Janke, Axel (Peer reviewed; Journal article, 2023-02-06)Population-genomic studies can shed new light on the effect of past demographic processes on contemporary population structure. We reassessed phylogeographical patterns of a classic model species of postglacial recolonisation, ... -
Restoration of transborder connectivity for Fennoscandian brown bears (Ursus arctos)
Kopatz, Alexander; Kleven, Oddmund; Kojola, Ilpo; Aspi, Jouni; Norman, Anita J.; Spong, Göran; Gyllenstrand, Niclas; Dalén, Love; Fløystad, Ida; Hagen, Snorre; Kindberg, Jonas; Flagstad, Øystein (Peer reviewed; Journal article, 2021-01-03)Knowledge about the connectivity among natural populations is essential to identify management units for effective conservation actions. Conservation-minded management has led to the recovery of large carnivore populations ... -
Resultater fra bjørnehårfeller i reinbeitedistrikt Beahceveai/Pasvik 5A/5C i 2016
Aspholm, Paul Eric; Kopatz, Alexander; Sotkajærvi, Tom; Aarnes, Siv; Schregel, Julia; Tobiassen, Camilla; Fløystad, Ida; Solem, Arnstein; Ryeng, Terje; Eiken, Hans Geir; Hagen, Snorre (NIBIO Rapport;2(109) 2016, Research report, 2016-11-01)Med bruk av 12 hårfeller ble det identifisert to ulike bjørn i kalvingslandet til reinbeitedistrikt 5A/5C i perioden fra 21. april til slutten av juni 2016. Data fra e- bjeller (Findmysheep), som ble båret av 100 simler, ... -
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 ... -
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 ...