ArticleGenome biology and evolution2023
A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway.
Article in Genome biology and evolution, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Sperm, egg, and embryo proteins critical for genetic adaptation of herring to low salinity in the Baltic Sea.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Biogeographic Structure and Mitonuclear Discordance Reveal Cryptic Diversity in Pacific Herring (Ecology and evolution · 2025Article
- Evolution of fast-growing piscivorous herring in the young Baltic Sea.Nature communications · 2024Article
- The origin and maintenance of supergenes contributing to ecological adaptation in Atlantic herring.Nature communications · 2024Article
- Genetic Stock Identification Reveals Mismatches Between Management Areas and Population Genetic Structure in a Migratory Pelagic Fish.Evolutionary applications · 2024Article
- Genetic architecture of long-distance migration and population genomics of the endangered Japanese eel.iScience · 2024Article
- Copy number variation and elevated genetic diversity at immune trait loci in Atlantic and Pacific herring.BMC genomics · 2024Article
- Convergent gene losses and pseudogenizations in multiple lineages of stomachless fishes.Communications biology · 2024Article
- Adaptation to seasonal reproduction and environment-associated factors drive temporal and spatial differentiation in northwest Atlantic herring despite gene flow.Evolutionary applications · 2024Article
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Authors and funding
7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Atlantic herring (Clupea harengus) and Pacific herring (C. pallasii) are sister species that split from a common ancestor about 2 million years ago. Balsfjord, a subarctic fjord in Northern Norway, harbors an outpost population of Pacific herring within the range of the Atlantic herring. We used whole genome sequencing to show that gene flow from Atlantic herring into the Balsfjord population has generated a stable hybrid population that has persisted for thousands of generations. The Atlantic herring ancestry in Balsfjord was estimated in the range 25-26%. The old age and large proportion of introgressed regions suggest there are no obvious genetic incompatibilities between species. Introgressed regions were widespread in the genome and large, with some in excess of 1 Mb, and they were overrepresented in low-recombination regions. We show that the distribution of introgressed material is non-random; introgressed sequence blocks in different individuals are shared more often than expected by chance. Furthermore, introgressed regions tend to show elevated divergence (FST) between Atlantic and Pacific herring. Together, our results suggest that introgression of genetic material has facilitated adaptation in the Balsfjord population. The Balsfjord population provides a rare example of a stable interspecies hybrid population that has persisted over thousands of years.
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