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Mother Knows Best
Do female adult Pieris butterflies prefer to lay their eggs on specific
plant types? Find out by providing them with different types of plant
leaves.
Materials Needed
Instructions
- Place the film
can ovipositrons, prepared as described, into a
Light House containing adult Pieris butterflies.
- Observe the egg-laying
behavior of the female butterflies.
- For each ovipositron over a specific time
period, keep track of how many butterflies land and fly away, vs.
how many land and lay eggs.
- Leave the ovipositrons in the Light House and observe and record
comparative results at 2 hours, 4 hours, 24 hours, and 48 hours.
Activity Questions:
- How did the butterflies behave when introduced
to the ovipositrons?
- How would you describe the process of egg-laying?
- What do you think
the butterflies do to select a plant for egg-laying? What’s your
evidence?
- What plants, if any, seem to be preferred for Pieris egg-laying?
- What
are the consequences of egg-laying to a plant ?
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