University of Minnesota

Ecology Fair University of Minnesota Monarch Lab

Abstracts from Kenyon-Wanamingo 2000

400 6th St
Kenyon, MN 55986

Year: 2000
Teacher(s): Jeff Wibben

Caterpillars and Their Growth

Amanda W

For our monarch project we compared how light effects a caterpillars growth.  We did this by putting a caterpillar in a clear container and another one in non-clear container.  The purpose of this experiment was to see if the amount of light and the type of container effects how caterpillars grow.  The results of our project was that one caterpillar grew more that the other caterpillar.  Amandas caterpillars grew about 5 mm a day on average while Koreys grew only 3 mm a day on average.  One error was that we did not start the experiment early enough.  We were not sure if the size would differ even more if we had them in their certain containers earlier, possibly the growth could have changed even more.  Two new things that our group learned was the amount of light can have a major effect on a caterpillars growth.  Also that how much you feed your caterpillar can have an effect on how they grow.

Do You Think the Amount That a Monarch Caterpillar Eats in One Day Affects its Growth?

Shawna N

In this experiment our group chose to look at how much a monarch caterpillar larva eats daily.  The reason that this experiment was chosen was that we wanted to see how much a larva would eat in one day, depending upon how active it was, or how much it was handled.  Would either have an effect on the larvas eating habitats?  Some of our uncertainties were the type of milkweed used fresh picked versus refrigerated.  Our group learned that when you do an experiment you have to pay close attention to what you are doing and why.  Another thing that was learned was that if you want your experiment to turn out as you want it to, you should have the correct data for your experiment.

Monarch Caterpillars and Color

Chelsey L, Katie W, Stephanie H

In our experiment we wanted to determine whether monarch caterpillars could see certain colors or not. We tried to see if they had any sort of a color sense or not.  The result was that they could see some colors better than others, green and red were the most common colors picked. Green was picked 14 times and red 8 times.  We think that the caterpillars went to green the most often because its food source is green.  This experiment does not give all the answers to our question because we only used 4 caterpillars and we raised them all differently.  But it does give us a good guess.  Two things that our group learned from this experiment are caterpillars are like humans and dont always want to do some stuff and they cant see very well at all.

Monarchs and Color

Brooke D

Our experiment was to see if caterpillars, when put in the middle of a colorwheel would go to the color of their food (green). Our hypothesis was that the caterpillars would go to green. We were testing 3 caterpillars in this experiment. The caterpillars almost always chose the color green in all three of the tests. Two group members made their colorwheels from markers and the other two used crayons. We wanted to see if texture would make a difference, because milkweed has a texture to it. Texture did not make a difference in our results. Our conclusion is that caterpillars have at least some sight. Our experiment came out the way that we had planned.

Monarchs and the Light

Ryan L

In this experiment our group compared the average lifespan of a caterpillar to our own caterpillar that was under a manufactured light.  Our goal was to find out if manufactured light helps caterpillars grow faster than the average caterpillars under natural light.  The average caterpillar takes 16 days to go into a chrysalis, ours took 15 days. Our conclusion is that manufactured light has no real effect on caterpillars growth. Our conclusion might be wrong because we only had one caterpillar to work with, and we could have started our experiment sooner.  Our group learned that if you have a plastic container that it is hard for the butterfly to stick to the top after it emerges.  Our group also learned that caterpillars are smaller than most people think.

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