Genome analyses suggest recent speciation and postglacial isolation in the Norwegian lemming.
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| Format: | Artículo científico |
| Language: | en |
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Proceedings of the National Academy of Sciences of the United States of America
2025
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| author | Lord, Edana Feinauer, Isabelle S Soares, André E R Lagerholm, Vendela K Näsvall, Karin Ersmark, Erik Olsen, Remi-André Prost, Stefan Kuzmina, Elena A Smirnov, Nickolay G Stewart, John R Knul, Monika V Noiret, Pierre Germonpré, Mietje Ehrich, Dorothee Pokrovsky, Ivan Fedorov, Vadim B Goropashnaya, Anna V Dalén, Love Díez-Del-Molino, David |
| author_facet | Lord, Edana Feinauer, Isabelle S Soares, André E R Lagerholm, Vendela K Näsvall, Karin Ersmark, Erik Olsen, Remi-André Prost, Stefan Kuzmina, Elena A Smirnov, Nickolay G Stewart, John R Knul, Monika V Noiret, Pierre Germonpré, Mietje Ehrich, Dorothee Pokrovsky, Ivan Fedorov, Vadim B Goropashnaya, Anna V Dalén, Love Díez-Del-Molino, David Lord, Edana Feinauer, Isabelle S Soares, André E R Lagerholm, Vendela K Näsvall, Karin Ersmark, Erik Olsen, Remi-André Prost, Stefan Kuzmina, Elena A Smirnov, Nickolay G Stewart, John R Knul, Monika V Noiret, Pierre Germonpré, Mietje Ehrich, Dorothee Pokrovsky, Ivan Fedorov, Vadim B Goropashnaya, Anna V Dalén, Love Díez-Del-Molino, David |
| collection | PubMed - marine biology |
| contents | Genome analyses suggest recent speciation and postglacial isolation in the Norwegian lemming. Lord, Edana Feinauer, Isabelle S Soares, André E R Lagerholm, Vendela K Näsvall, Karin Ersmark, Erik Olsen, Remi-André Prost, Stefan Kuzmina, Elena A Smirnov, Nickolay G Stewart, John R Knul, Monika V Noiret, Pierre Germonpré, Mietje Ehrich, Dorothee Pokrovsky, Ivan Fedorov, Vadim B Goropashnaya, Anna V Dalén, Love Díez-Del-Molino, David Animals Phylogeny Genetic Speciation Norway Arvicolinae Genome Gene Flow The Norwegian lemming () is a small rodent distributed across the Fennoscandian mountain tundra and the Kola Peninsula. The Norwegian lemming likely evolved during the Late Pleistocene and inhabited Fennoscandia shortly prior to the Last Glacial Maximum. However, the exact timing and origins of the species, and its phylogenetic position relative to the closely related Siberian lemming () remain disputed. Moreover, the presence of ancient or contemporary gene flow between both species is largely untested. The Norwegian lemming displays characteristic phenotypic and behavioral adaptations (e.g., coat color, aggression) that are not present in other species. We generated a de novo genome assembly for the Norwegian lemming and resequenced nine modern and two ancient spp. genomes. We show that all species form distinct monophyletic clades, with concordant topology between the mitochondrial and nuclear genome phylogenies. The Siberian lemming is divided into two distinct but paraphyletic clades, one in the east and one in the west, where the western clade represents a sister taxon to the Norwegian lemming. We estimate that the Norwegian and western Siberian lemming diverged shortly before the Last Glacial Maximum, making the Norwegian lemming one of the youngest known mammalian species. We did not find any indication of gene flow between and , suggesting postglacial isolation of . Furthermore, we identify species-specific genomic differences in genes related to coat color and fat transport, which are likely associated with the distinctive coloration and overwintering behavior observed in the Norwegian lemming. |
| format | Artículo científico |
| id | pubmed_40587810 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Proceedings of the National Academy of Sciences of the United States of America |
| record_format | pubmed |
| spellingShingle | Genome analyses suggest recent speciation and postglacial isolation in the Norwegian lemming. Lord, Edana Feinauer, Isabelle S Soares, André E R Lagerholm, Vendela K Näsvall, Karin Ersmark, Erik Olsen, Remi-André Prost, Stefan Kuzmina, Elena A Smirnov, Nickolay G Stewart, John R Knul, Monika V Noiret, Pierre Germonpré, Mietje Ehrich, Dorothee Pokrovsky, Ivan Fedorov, Vadim B Goropashnaya, Anna V Dalén, Love Díez-Del-Molino, David Animals Phylogeny Genetic Speciation Norway Arvicolinae Genome Gene Flow Genome analyses suggest recent speciation and postglacial isolation in the Norwegian lemming. Lord, Edana Feinauer, Isabelle S Soares, André E R Lagerholm, Vendela K Näsvall, Karin Ersmark, Erik Olsen, Remi-André Prost, Stefan Kuzmina, Elena A Smirnov, Nickolay G Stewart, John R Knul, Monika V Noiret, Pierre Germonpré, Mietje Ehrich, Dorothee Pokrovsky, Ivan Fedorov, Vadim B Goropashnaya, Anna V Dalén, Love Díez-Del-Molino, David Animals Phylogeny Genetic Speciation Norway Arvicolinae Genome Gene Flow The Norwegian lemming () is a small rodent distributed across the Fennoscandian mountain tundra and the Kola Peninsula. The Norwegian lemming likely evolved during the Late Pleistocene and inhabited Fennoscandia shortly prior to the Last Glacial Maximum. However, the exact timing and origins of the species, and its phylogenetic position relative to the closely related Siberian lemming () remain disputed. Moreover, the presence of ancient or contemporary gene flow between both species is largely untested. The Norwegian lemming displays characteristic phenotypic and behavioral adaptations (e.g., coat color, aggression) that are not present in other species. We generated a de novo genome assembly for the Norwegian lemming and resequenced nine modern and two ancient spp. genomes. We show that all species form distinct monophyletic clades, with concordant topology between the mitochondrial and nuclear genome phylogenies. The Siberian lemming is divided into two distinct but paraphyletic clades, one in the east and one in the west, where the western clade represents a sister taxon to the Norwegian lemming. We estimate that the Norwegian and western Siberian lemming diverged shortly before the Last Glacial Maximum, making the Norwegian lemming one of the youngest known mammalian species. We did not find any indication of gene flow between and , suggesting postglacial isolation of . Furthermore, we identify species-specific genomic differences in genes related to coat color and fat transport, which are likely associated with the distinctive coloration and overwintering behavior observed in the Norwegian lemming. |
| title | Genome analyses suggest recent speciation and postglacial isolation in the Norwegian lemming. |
| topic | Animals Phylogeny Genetic Speciation Norway Arvicolinae Genome Gene Flow |
| url | https://pubmed.ncbi.nlm.nih.gov/40587810/ |