Brains On! Science podcast for kids

How does a caterpillar become a butterfly?

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May 3, 2022
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INSIGHT

Inside the Chrysalis Transformation

  • Inside a chrysalis, caterpillars liquefy many body parts to transform into a butterfly.
  • Special imaginal disks remain intact to grow new legs, wings, and eyes during metamorphosis.
ANECDOTE

Monty and Cat's Pupation Search

  • Caterpillars Monty and Cat search for the perfect pupation station with different preferences.
  • Monty prefers simple silk cocoons while Cat seeks a cosy bark burrow for transformation.
INSIGHT

Hormonal Control of Metamorphosis

  • Caterpillars know to transform when their body releases hormones after they've eaten enough.
  • Most body parts liquefy during pupation, except imaginal disks that form new adult body parts.
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