University of Minnesota

Ecology Fair University of Minnesota Monarch Lab

Abstracts from Kenyon-Wanamingo 2004

400 6th St
Kenyon, MN 55986

Year: 2004
Teacher(s): Jeff Wibben

Monarch Growth Experiment

Brittany P, Tia J

We put several monarch caterpillars in a dark location and several in a light location for our experiment.  The purpose of this experiment was to see which set of caterpillars would grow the fastest.  The caterpillars in the dark came out of the chrysalis first.  We were surprised that the caterpillars in the dark location grew faster than the ones in the light location.  We learned that caterpillars in dark locations emerged faster than ones in a light location, we also learned that once a monarch emerges from its chrysalis it will only live for two weeks.

The Affects of Light on Monarchs

Angela K, Lauren W

   We gave each caterpillar different amounts of light.  We used a translucent container, to let the lamplight through,  for the caterpillars that got 5 hours, 7 hours, and regular hours of light, but not for that caterpillar that got 0 hours of light.  Our group wanted to find out if the amount of light a caterpillar got would affect its grouthh rate.  We compared the grouth rate by how soon the caterpillars went into chrysalis.  We found that the caterpillar with 0 hours of light went into chrysalis 4 days before the next caterpillar.  The board may not be 100% correct because we started the expiriment when the caterpillars were at different stages.  We also should have used the same light source, not different lamps.  We learned that light does affect caterpillars, but not too majorly.  We also learned that caring for caterpillars is chalenging at times, but also rewarding. 

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