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Related Experiment Videos

Structural plasticity in the Drosophila brain

M Heisenberg1, M Heusipp, C Wanke

  • 1Theodor-Boveri-Institut für Biowissenschaften (Biozentrum), Lehrstuhl für Genetik, Würzburg, Germany.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|March 1, 1995
PubMed
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Drosophila brain structure, including Kenyon cell fibers and mushroom bodies, changes with population density and social environment. These findings reveal environmental plasticity in adult brain organization.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Animal Behavior

Background:

  • The Drosophila brain exhibits significant size variability.
  • Environmental factors during larval development impact neural structures like Kenyon cell fibers and mushroom bodies.

Purpose of the Study:

  • To investigate how environmental conditions influence brain structure in adult Drosophila.
  • To identify factors affecting brain region volumes during imaginal life.

Main Methods:

  • Comparative analysis of brain structures (calyx, lobula, optic lobes, central brain) in flies reared under different population densities.
  • Observation of brain volume changes in adult flies housed in various social and environmental conditions (pairs, isolation, populated cages).

Main Results:

Related Experiment Videos

  • Larval density affects Kenyon cell fiber number and calyx volume.
  • Adult brain regions (calyces, optic lobes, central brain) show volume changes between weeks 1 and 2 of adulthood.
  • Social environment and partner sex influence calyx and lobula size.
  • Group housing reduces the volume of lobulae, medullae, and calyces compared to isolated individuals.

Conclusions:

  • Drosophila brain neuropil regions are highly plastic and reorganize throughout adult life.
  • Environmental and social conditions are critical determinants of adult brain structure in Drosophila.