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Updated: Mar 17, 2026

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
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Evolutionary plasticity of acipenseriform genomes.

Vladimir A Trifonov1, Svetlana S Romanenko2,3, Violetta R Beklemisheva2

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Summary

Sturgeons and paddlefishes (Acipenseriformes) exhibit unique genomic traits like polyploidy, influencing their hybridization. These fish showcase basal ray-finned fish characteristics and complex genetic features.

Keywords:
PaddlefishPolyploidySturgeonWhole genome duplication

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Area of Science:

  • Ichthyology
  • Genomics
  • Cytogenetics

Background:

  • Acipenseriformes (sturgeons and paddlefishes) are basal ray-finned fishes with 27 species.
  • They possess unique genomic features: high chromosome numbers, varied ploidy, and interspecific hybridization.
  • Their basal position in Actinopteri offers insights into fish evolution.

Purpose of the Study:

  • To discuss the cytogenetic and genomic traits of Acipenseriformes.
  • To explore the connection between polyploidization and interspecific hybridization in these fish.
  • To integrate recent molecular genetics and genomics data for a better understanding of Acipenseriform biology.

Main Methods:

  • Review of recent advances in molecular genetics and genomics.
  • Analysis of comparative cytogenetics data.
  • Phylogenetic reconstruction and genome structure analysis.

Main Results:

  • Acipenseriformes display high diploid chromosome numbers and diverse ploidy levels.
  • Interspecific hybridization is common in this group.
  • Novel data improves phylogenetic understanding and genome structure insights.

Conclusions:

  • Cytogenetic and genomic traits, particularly polyploidization, are linked to the high tolerance for interspecific hybridization in Acipenseriformes.
  • These findings enhance our understanding of Acipenseriform evolution and genetic diversity.