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Peer-reviewedCC BYProceedings. Biological sciences

Genomic mechanisms underlying Bombay duck's rapid population surge

  • Bin Kang1,2
  • Linlong Wang2
  • Dongji Yao3
  • Jialin Geng3
  • Zhicheng Sun2
  • Rongfeng Cui3,4
4 affiliations
  1. 1Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, Qingdao, Shandong, People's Republic of China
  2. 2Fisheries College, Ocean University of China, Qingdao, Shandong, People's Republic of China
  3. 3School of Ecology and State Key Laboratory of Biocontrol, Shenzhen Campus of Sun Yat-sen University, Guangdong, Shenzhen, People's Republic of China
  4. 4Southern Marine Science and Engineering Guangdong Laboratory - Zhuhai, Zhuhai, Guangdong, People's Republic of China
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Abstract

Bombay duck (Harpadon nehereus), once a minor by-catch in the East China Sea, has bloomed into a dominant species, altering marine ecosystems. This study explored the genomic basis of its mysterious recent success via chromosome-level genome assembly, comparative and population genomics. The genome assemblies of H. nehereus and its closely related outgroup species Saurida undosquamis were of good quality, showing a 96.7–96.8% Benchmarking Universal Single‐Copy Orthologues completeness. Population resequencing supports a single panmictic population throughout the coast of China. Expanded gene families and genes under intensified and positive selection are related to osmoregulation, hypoxia tolerance, immune function and reproduction. Recent selective sweeps are mostly related to immune response. These molecular signatures are consistent with long-term adaptations to a hypoxic, polluted and fluctuating environment. These findings suggest that species genomically preadapted to environments affected by global change can suddenly become new native invaders.

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Cite

BibTeXRIS
BibTeX
@article{kang2026genomic,
  title = {{Genomic mechanisms underlying Bombay duck's rapid population surge}},
  author = {Bin Kang and Linlong Wang and Dongji Yao and Jialin Geng and Zhicheng Sun and Rongfeng Cui},
  journal = {Proceedings. Biological sciences},
  year = {2026},
  month = nov,
  doi = {10.1098/rspb.2026.1106},
  url = {https://europepmc.org/article/PMC/PMC13730804},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Genomic mechanisms underlying Bombay duck's rapid population surge
AU  - Bin Kang
AU  - Linlong Wang
AU  - Dongji Yao
AU  - Jialin Geng
AU  - Zhicheng Sun
AU  - Rongfeng Cui
PY  - 2026
DA  - 2026/11/04
JO  - Proceedings. Biological sciences
DO  - 10.1098/rspb.2026.1106
UR  - https://europepmc.org/article/PMC/PMC13730804
AB  - Bombay duck (Harpadon nehereus), once a minor by-catch in the East China Sea, has bloomed into a dominant species, altering marine ecosystems. This study explored the genomic basis of its mysterious recent success via chromosome-level genome assembly, comparative and population genomics. The genome assemblies of H. nehereus and its closely related outgroup species Saurida undosquamis were of good quality, showing a 96.7–96.8% Benchmarking Universal Single‐Copy Orthologues completeness. Population resequencing supports a single panmictic population throughout the coast of China. Expanded gene families and genes under intensified and positive selection are related to osmoregulation, hypoxia tolerance, immune function and reproduction. Recent selective sweeps are mostly related to immune response. These molecular signatures are consistent with long-term adaptations to a hypoxic, polluted and fluctuating environment. These findings suggest that species genomically preadapted to environments affected by global change can suddenly become new native invaders.
SN  - 0962-8452
SN  - 1471-2954
ER  -