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Metagenomic data indicates a higher viral abundance of viruses of unicellular eukaryotes in the polar regions, information still not matched by broad isolation efforts using samples collected in these regions. Here we describe a prospection effort using diverse samples collected above the Arctic circle, including freshwater and marine samples from urban areas, deep\u2010sea hydrothermal vents and sea ice samples from the Nansen Basin. We isolated 10 giant viruses capable of infecting\n                    <jats:italic>Acanthamoeba<\/jats:italic>\n                    spp., five representing the\n                    <jats:italic>Marseilleviridae<\/jats:italic>\n                    family and five representing the\n                    <jats:italic>Mimiviridae<\/jats:italic>\n                    family. These viruses are the northernmost isolates found so far in the Nordic countries and consist of a unique cohort of Arctic viruses that differs geographically and temporarily from a cohort already described from the Siberian permafrost. Despite an apparent viral diversity in the samples, the uniqueness of the samples themselves and the use of additional non\u2010amebozoan strains as hosts, our viruses are still representatives of known viral families. In conclusion, here we show the isolation of giant viruses in Northern Norway and highlight the potential host bias towards\n                    <jats:italic>Acanthamoeba<\/jats:italic>\n                    in giant virus prospection, indicating the need to break this bias to diversify the isolation of environmental viruses.\n                  <\/jats:p>","DOI":"10.1111\/1462-2920.70366","type":"journal-article","created":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T06:51:28Z","timestamp":1783061488000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Isolation of a Cohort of Giant Viruses From Above the Arctic Circle in Northern Norway"],"prefix":"10.1111","volume":"28","author":[{"given":"Victoria Fulgencio","family":"Queiroz","sequence":"first","affiliation":[{"name":"Laborat\u00f3rio de V\u00edrus, Instituto de Ci\u00eancias Biol\u00f3gicas, Departamento de Microbiologia Universidade Federal de Minas Gerais  Belo Horizonte Minas Gerais Brazil"},{"name":"Department of Biological Sciences Virginia Tech  Blacksburg Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juliana Miranda","family":"Tatara","sequence":"additional","affiliation":[{"name":"The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics UiT\u2014The Arctic University of Norway  Troms\u00f8 Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdeali Mustafa","family":"Jivaji","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences Virginia Tech  Blacksburg Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cindy Jittrapan","family":"Given","sequence":"additional","affiliation":[{"name":"The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics UiT\u2014The Arctic University of Norway  Troms\u00f8 Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lara Ambrosio Leal","family":"Dutra","sequence":"additional","affiliation":[{"name":"The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics UiT\u2014The Arctic University of Norway  Troms\u00f8 Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Waleed","family":"Abbas","sequence":"additional","affiliation":[{"name":"The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics UiT\u2014The Arctic University of Norway  Troms\u00f8 Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zaroon","family":"Ricky","sequence":"additional","affiliation":[{"name":"The Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics UiT\u2014The Arctic University of Norway  Troms\u00f8 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