Skip to content
DraconiticResearch
Search Sources API
203,203 studies31 sourcesUpdated 14 min ago
Peer-reviewedCC BY-NC-ND 4.0Nature Ecology & Evolution

Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population

  • Takuya K. Hosoki1,2,3
  • Seiichi Mori4
  • Kotaro Kagawa1
  • Shotaro Nishida4
  • Manabu Kume1,4,5,6
  • Atsushi J. Nagano7,8
  • Hiyu Kanbe1,2
  • Ryo Kakioka1,9
  • Kenta Nakamoto10,11
  • Yuki Iino10
  • Masafumi Kodama10,12
  • Satoki Oba10
6 more authors
  • Taekyoung Seong13,14
  • Naoki Kabeya13
  • Asano Ishikawa1,15
  • Kohta Yoshida1,16
  • Yo Y. Yamasaki1,2
  • Jun Kitano1,2
16 affiliations
  1. 1Ecological Genetics Laboratory, National Institute of Genetics, Mishima, Japan
  2. 2Genetics Course, Graduate University for Advanced Studies, Mishima, Japan
  3. 3Field Science Centre for Northern Biosphere, Hokkaido University, Tomakomai, Japan
  4. 4The Institute of Regional Development, Gifu Kyoritsu University, Ogaki, Japan
  5. 5Field Science Education and Research Center, Kyoto University, Kyoto, Japan
  6. 6Faculty of Science and Engineering, Ishinomaki Senshu University, Ishinomaki, Japan
  7. 7Bioscience and Biotechnology Center, Nagoya University, Nagoya, Japan
  8. 8Institute for Advanced Biosciences, Keio University, Tsuruoka, Japan
  9. 9Department of Applied Aquabiology, National Fisheries University, Shimonoseki, Japan
  10. 10International Coastal Research Center, Atmosphere and Ocean Research Institute, The University of Tokyo, Otsuchi, Japan
  11. 11VANISH STANDARD CO. LTD., Shibuya, Japan
  12. 12Faculty of Fisheries, Kagoshima University, Kagoshima, Japan
  13. 13Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Minato, Japan
  14. 14Industry-Academia-Government Co-Creation Unit, University of the Ryukyus, Okinawa, Japan
  15. 15Laboratory of Molecular Ecological Genetics, Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
  16. 16Department of Evolutionary Genomics, Brain Research Institute, Niigata University, Niigata, Japan
Read full textPDFDOICite

Abstract

Speciation is the process by which barriers to gene flow evolve between populations. As speciation approaches completion, genome-wide divergence can be maintained in the face of hybridization. Because real-time observations of genomic changes following hybridization in natural populations remain rare, little is known about the processes and mechanisms by which introgressed genomes are purged in nature. Here we report a 9-year genomic monitoring of a tsunami-induced hybrid stickleback population, revealing rapid genome-wide purging within only a few generations. On 11 March 2011, a devastating tsunami struck the Tohoku Region, Japan, creating new stickleback habitats and inducing hybridization between freshwater Gasterosteus aculeatus and marine Gasterosteus nipponicus. Within the first few generations, G. nipponicus alleles were purged at major loci responsible for reproductive isolation, including ancestral-X and neo-X chromosomes. These loci are involved in freshwater survival, migratory divergence associated with habitat choice, sexual isolation and hybrid sterility. Subsequently, G. nipponicus alleles were purged across the genome except at several loci. We provide direct evidence from a natural population that rapid genome-wide purging allows species identity to persist even after extensive introgression. Elucidating the genetic mechanisms underlying genome-wide purging is crucial for understanding the factors that drive progress towards speciation completion.

Related

  1. Wolf-dog hybridization: Population structure confounds genetic assignment and hybrid classification
    Ema Cetkovská, Kristýna Eliášová, Jana Šrutová +8
    iSciencePeer-reviewedCC BY-NC 4.0Full textZoology & animal behaviourCell PressCrossrefEurope PMCPMC
  2. Glaciers retreat, stickleback advance: variation in demographic histories of freshwater stickleback populations
    H. Rosinger, R. Greenway, C. Hudson +4
    bioRxivPreprintCC BY-NC-NDFull textEvolutionary biologybioRxiv
  3. Multiple genetic routes to pelvic spine loss in brook stickleback
    Mykaela Tucker, Jon Mee, Sam Yeaman +1
    EcoEvoRxivPreprintCC BY-NC-SA 4.0Full textEcologyEvolutionary biologyEcoEvoRxiv
  4. Developmental temperature induces consistent patterns of plasticity in lower, but not upper, critical thermal limits in threespine stickleback (Gasterosteus aculeatus)
    Brenna C.M. Stanford, Sara J. Smith, Sean M. Rogers
    Scientific ReportsPeer-reviewedCC BY 4.0Full textEcologyCrossrefPMC
  5. Heritable morphology-environment correlations among lake populations of threespine stickleback
    A. Yeung, B. A. Flanagan, H. Alexander +19
    bioRxivPreprintCC BYFull textEvolutionary biologybioRxiv

Cite

BibTeXRIS
BibTeX
@article{hosoki2026rapid,
  title = {{Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population}},
  author = {Takuya K. Hosoki and Seiichi Mori and Kotaro Kagawa and Shotaro Nishida and Manabu Kume and Atsushi J. Nagano and Hiyu Kanbe and Ryo Kakioka and Kenta Nakamoto and Yuki Iino and Masafumi Kodama and Satoki Oba and Taekyoung Seong and Naoki Kabeya and Asano Ishikawa and Kohta Yoshida and Yo Y. Yamasaki and Jun Kitano},
  journal = {Nature Ecology \& Evolution},
  year = {2026},
  month = sep,
  doi = {10.1038/s41559-026-03184-1},
  url = {https://doi.org/10.1038/s41559-026-03184-1},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - JOUR
TI  - Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population
AU  - Takuya K. Hosoki
AU  - Seiichi Mori
AU  - Kotaro Kagawa
AU  - Shotaro Nishida
AU  - Manabu Kume
AU  - Atsushi J. Nagano
AU  - Hiyu Kanbe
AU  - Ryo Kakioka
AU  - Kenta Nakamoto
AU  - Yuki Iino
AU  - Masafumi Kodama
AU  - Satoki Oba
AU  - Taekyoung Seong
AU  - Naoki Kabeya
AU  - Asano Ishikawa
AU  - Kohta Yoshida
AU  - Yo Y. Yamasaki
AU  - Jun Kitano
PY  - 2026
DA  - 2026/09/25
JO  - Nature Ecology & Evolution
DO  - 10.1038/s41559-026-03184-1
UR  - https://doi.org/10.1038/s41559-026-03184-1
AB  - Speciation is the process by which barriers to gene flow evolve between populations. As speciation approaches completion, genome-wide divergence can be maintained in the face of hybridization. Because real-time observations of genomic changes following hybridization in natural populations remain rare, little is known about the processes and mechanisms by which introgressed genomes are purged in nature. Here we report a 9-year genomic monitoring of a tsunami-induced hybrid stickleback population, revealing rapid genome-wide purging within only a few generations. On 11 March 2011, a devastating tsunami struck the Tohoku Region, Japan, creating new stickleback habitats and inducing hybridization between freshwater Gasterosteus aculeatus and marine Gasterosteus nipponicus. Within the first few generations, G. nipponicus alleles were purged at major loci responsible for reproductive isolation, including ancestral-X and neo-X chromosomes. These loci are involved in freshwater survival, migratory divergence associated with habitat choice, sexual isolation and hybrid sterility. Subsequently, G. nipponicus alleles were purged across the genome except at several loci. We provide direct evidence from a natural population that rapid genome-wide purging allows species identity to persist even after extensive introgression. Elucidating the genetic mechanisms underlying genome-wide purging is crucial for understanding the factors that drive progress towards speciation completion.
SN  - 2397-334X
ER  -