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Related Experiment Video

Updated: Mar 5, 2026

Building Finite Element Models to Investigate Zebrafish Jaw Biomechanics
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Form-function relationships in dragonfly mandibles under an evolutionary perspective.

Alexander Blanke1, Helmut Schmitz2, Alessandra Patera3,4

  • 1Medical and Biological Engineering Research Group, School of Engineering, University of Hull, Hull HU6 7RX, UK a.blanke@hull.ac.uk.

Journal of the Royal Society, Interface
|March 24, 2017
PubMed
Summary
This summary is machine-generated.

Phylogeny constrains dragonfly mandible shape and mechanical advantage. However, functional traits show high variability, suggesting diverse evolutionary paths lead to similar mandibular performance.

Keywords:
finite element analysisfunctional morphologygeometric morphometricsinsectphylogeny

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Area of Science:

  • Evolutionary biology
  • Biomechanics
  • Insect morphology

Background:

  • The relationship between insect mouthpart shape and function in an evolutionary context is under-explored.
  • Dragonfly mandibles offer a model system to investigate functional influence on phenotypic diversification.

Purpose of the Study:

  • To assess the functional influence on phenotypic diversification of dragonfly mandibles.
  • To analyze the relationship between shape, function, and evolutionary constraints in anisopteran mandibles.

Main Methods:

  • Large-scale biomechanical analysis of dragonfly mandibles across nearly all anisopteran families.
  • Application of finite element analysis and geometric morphometrics.
  • Investigation of phylogenetic signals for shape, mechanical advantage, stresses, strains, and joint parameters.

Main Results:

  • Phylogeny constrains mandible shape, mechanical advantage, and some joint parameters.
  • Stresses, strains, most joint parameters, and size are influenced by shared ancestry.
  • Functional traits exhibit high variability and lack strong phylogenetic signals, contradicting the idea that morphology primarily reflects function.

Conclusions:

  • Functional traits in dragonfly mandibles are highly variable and not solely dictated by shared ancestry.
  • Diverse functional factors can converge on similar mandibular performance, indicating a many-to-one mapping.
  • The study challenges the notion that mandibular morphology at this taxonomic level predominantly reflects functional demands.