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Related Experiment Video

Updated: May 3, 2026

Rearing and Double-stranded RNA-mediated Gene Knockdown in the Hide Beetle, Dermestes maculatus
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Evolutionary implications of dipluran hexamerins.

Wei Xie1, Yun-Xia Luan1

  • 1Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.

Insect Biochemistry and Molecular Biology
|January 28, 2014
PubMed
Summary

Hexamerins, proteins found in insects, likely originated once in Hexapoda. This study supports a single evolutionary origin for hexamerins, linking Diplura and Insecta closely.

Keywords:
DipluraHemocyaninHexamerinInsectaPhylogeny

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Area of Science:

  • Evolutionary biology
  • Molecular phylogenetics
  • Arthropod genomics

Background:

  • Hexamerins are conserved arthropod proteins crucial for insect phylogenetic studies.
  • Previous research on hexamerins in basal hexapods, like Diplura, is limited.
  • The origin of Diplura hexamerins suggested a potential multiple origin of hexamerins in Hexapoda.

Purpose of the Study:

  • To investigate the evolutionary origin of hexamerins in Hexapoda.
  • To clarify the phylogenetic position of Diplura hexamerins relative to insect hexamerins.
  • To provide evidence for a single or multiple origins of hexamerins within Hexapoda.

Main Methods:

  • Phylogenetic analysis of newly obtained hexamerin and hemocyanin gene sequences from Diplura and Collembola.
  • Inclusion of diverse taxa to ensure robust phylogenetic reconstruction.
  • Utilizing likelihood and Bayesian support for phylogenetic inference.

Main Results:

  • All analyzed Diplura hexamerins formed a monophyletic group, sister to insect hexamerins.
  • Phylogenetic analyses strongly supported a single origin for hexamerins in Hexapoda.
  • The results indicate a close evolutionary relationship between Diplura and Insecta.

Conclusions:

  • Hexamerins in Hexapoda originated from a single ancestral gene.
  • The study underscores the importance of comprehensive taxon sampling in resolving phylogenetic uncertainties.
  • Diplura and Insecta share a common ancestor, as evidenced by hexamerin evolution.