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That's So Last Season: Unraveling the Genomic Consequences of Fur Farming in Arctic Foxes (Vulpes lagopus)
Stockholm University, Faculty of Science, Department of Zoology.ORCID iD: 0000-0001-9776-3183
Stockholm University, Faculty of Science, Department of Zoology. Centre for Palaeogenetics, Sweden.ORCID iD: 0000-0003-0715-1947
Stockholm University, Faculty of Science, Department of Zoology. Centre for Palaeogenetics, Sweden.ORCID iD: 0000-0003-2767-8156
Stockholm University, Faculty of Science, Department of Zoology. Centre for Palaeogenetics, Sweden; Swedish Museum of Natural History, Sweden.ORCID iD: 0000-0002-1324-7489
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2025 (English)In: Molecular Ecology, ISSN 0962-1083, E-ISSN 1365-294XArticle in journal (Refereed) Epub ahead of print
Abstract [en]

Humans have relied on animal fur for centuries, yet fur farming only began recently during the mid-19th Century. Little is known about this incipient domestication or the genomic processes involved. Domestication may involve founder effects, population bottlenecks and low population size, which, when combined with intense artificial selection, lead to inbreeding, a limited gene pool and reduced fitness. The arctic fox (Vulpes lagopus) has been farmed intensively since the early 1900s and has been artificially selected for economic phenotypes. We investigated the origin of these lineages and the genomic consequences of intensive farming by comparing the genomes of farmed and wild arctic foxes from across their range. Our research indicates recent inbreeding through long Runs of Homozygosity and reduced genomic variation in farmed foxes relative to their respective wild populations. We identified a coastal ecotype origin for all Fennoscandian farmed arctic foxes, aligning them phylogenetically with the wild Icelandic population, a geographically isolated and phenotypically distinct coastal lineage. The depleted genome-wide heterozygosity and increased recent inbreeding in farmed fox lineages is consistent with a heavy consequence of domestication, shedding light on the demographic history and genomic consequences of human manipulation. We highlight the need for increased genomic investigations into fur farm populations to understand the incipient domestication process and uncover the cost of intense farming. The genomic consequences of domestication must be considered in the management of fur farms, with actionable steps needed to prevent descendants of escaped farmed foxes from polluting the gene pool in the wild through introgression.

Place, publisher, year, edition, pages
2025.
Keywords [en]
domestication, arctic fox, demographic history, whole-genome sequencing
National Category
Zoology
Research subject
Conservation Biology
Identifiers
URN: urn:nbn:se:su:diva-233597DOI: 10.1111/mec.70166ISI: 001613493400001Scopus ID: 2-s2.0-105021543945OAI: oai:DiVA.org:su-233597DiVA, id: diva2:1898981
Projects
Svenska Fjällrävsprojektet
Funder
Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning, 2015-1526Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning, 2020-01402The Research Council of Norway, 244557Knut and Alice Wallenberg FoundationGöran Gustafsson Foundation for Research in Natural Sciences and MedicineWWF SwedenCarl Tryggers foundation , CTS 19: 257Interreg Sweden-Norway, 304-4159-13Interreg Sweden-Norway, 20200939Interreg Sweden-Norway, 20201086Interreg Sweden-Norway, 0203530Interreg AuroraAvailable from: 2024-09-18 Created: 2024-09-18 Last updated: 2025-12-17

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Cockerill, Christopher AlanChacón-Duque, J. CamiloBergfeldt, Noravon Seth, JohannaBjörklund, GabriellaHasselgren, MalinWallén, JohanAngerbjörn, AndersOlsen, Remi-AndréDalén, LoveNorén, Karin

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Cockerill, Christopher AlanChacón-Duque, J. CamiloBergfeldt, Noravon Seth, JohannaBjörklund, GabriellaHasselgren, MalinWallén, JohanAngerbjörn, AndersOlsen, Remi-AndréDalén, LoveNorén, Karin
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Department of ZoologyDepartment of Biochemistry and BiophysicsScience for Life Laboratory (SciLifeLab)
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Molecular Ecology
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