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Related Experiment Videos

Correlations between scale structure and pigmentation in butterfly wings.

J M Janssen1, A Monteiro, P M Brakefield

  • 1Section of Evolutionary Biology, Institute of Evolutionary and Ecological Sciences, Leiden University, The Netherlands.

Evolution & Development
|January 25, 2002
PubMed
Summary

Butterfly wing scales show varied color-structure links. Bicyclus anynana scales link color and structure quantitatively, while Heliconius melpomene scales link them qualitatively, impacting development.

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Area of Science:

  • Evolutionary developmental biology
  • Insect morphology
  • Structural coloration

Background:

  • Butterfly wing scales exhibit diverse colors and structures.
  • The relationship between scale color and microstructure varies across species.
  • Nymphalid butterflies Bicyclus anynana and Heliconius melpomene provide models for studying these variations.

Purpose of the Study:

  • To investigate the correlation between color and structure in the wing scales of Bicyclus anynana and Heliconius melpomene.
  • To determine if scale color and microstructure can be uncoupled during development.
  • To explore the developmental basis for differences in scale color-structure relationships.

Main Methods:

  • Comparative analysis of wing scale morphology in B. anynana and H. melpomene.

Related Experiment Videos

  • Microstructural examination of scales across different colorations.
  • Ectopic induction of color patterns during pupal development via wing damage.
  • Analysis of scale structure and color in manipulated and control individuals.

    • Main Results:

    • B. anynana scales show a quantitative relationship between color and microstructure (e.g., cross rib density gradient).
    • H. melpomene scales exhibit a qualitative relationship, with distinct structures for different colors.
    • Ectopic color induction in B. anynana resulted in intermediate scale structures and colors.
    • In H. melpomene, ectopic color induction did not alter scale structure, maintaining the structure typical for the induced color.

    Conclusions:

    • The linkage between scale color and microstructure is species-specific and developmental.
    • B. anynana exhibits a more flexible, quantitative relationship allowing for intermediate phenotypes.
    • H. melpomene demonstrates a more rigid, qualitative relationship where color and structure are tightly coupled.
    • Developmental plasticity in scale formation influences the observed color-structure correlations.