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Related Experiment Videos

How aphids lose their marbles.

Nathan Pike1, Denis Richard, William Foster

  • 1Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK.

Proceedings. Biological Sciences
|June 18, 2002
PubMed
Summary
This summary is machine-generated.

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Aphids use secreted wax to prevent entrapment in liquids within plant galls. This ingenious solution involves creating hydrophobic surfaces and liquid marbles for efficient waste removal.

Area of Science:

  • Entomology
  • Biophysics
  • Surface Science

Background:

  • Insects navigate a world dominated by surface forces, facing risks of liquid entrapment.
  • Waxy and hairy surfaces help insects avoid liquid entrapment, a challenge amplified in enclosed spaces like plant galls.

Purpose of the Study:

  • To investigate the physical and physiological significance of wax secretion by aphids for managing excrement in plant galls.
  • To understand the role of secreted wax in preventing liquid entrapment and facilitating waste removal.

Main Methods:

  • Analysis of aphid-secreted wax properties.
  • Microscopic examination of the inner gall surface.
  • Observation of honeydew droplet behavior coated in wax.

Main Results:

Related Experiment Videos

  • Aphid-secreted powdery wax is hydrophobic.
  • The wax forms a microscopically rough, ultra-hydrophobic inner gall surface.
  • Wax coating transforms honeydew droplets into mobile liquid marbles.

Conclusions:

  • Aphid wax secretion is a 200-million-year-old solution to prevent liquid entrapment in plant galls.
  • The wax serves multiple roles: hydrophobicity, creating an ultra-hydrophobic surface, and forming liquid marbles for efficient transport.
  • This strategy highlights insect adaptation to surface forces in confined environments.