University of Minnesota

Ecology Fair University of Minnesota Monarch Lab

Abstracts from Carondelet Catholic School 2010

Carondelet Catholic School
3210 W 51st St
Minneapolis, MN 55410

Year: 2010
Teacher(s): Cece Cope

Effect of Natural vs Processed diet on Cricket's Weight Gain

Frankie G

I fed one group of eight crickets store bought food (Fluker's Orange Cube Complete Cricket Diet) and I fed potato pieces to the second group of eight crickets. Crickets fed potato pieces increased their weight 0.03 grams more than those fed the store bought food. One uncertainty I have about the results is whether the mixtures of ages and genders in both of my sample groups were similar.  The eight crickets in each group were similar in size at the beginning of the experiment.  To weigh the crickets, I had to transport them back and forth to the science room from my house and back.  This may have injured some of the crickets, affecting my results.  I learned that what an insect eats affects its weight.  I would have liked experimenting longer to find out if what an insect eats makes a difference in how many offspring they have.

Lady Bug--3D model and information

Ryan S, Grace B

We did two related experiments, using the same insect: Lady Bird Beetles. The first experiment tested the effect of light and dark on the lady bird beetles’ appearance. The second experiment tested the effect of foods on the length the beetles’ life span. The effect of light on the lady bird beetles’ appearance was that when ladybugs are in light, they tend to grow more spots. The conclusion from the second experiment's results is that ladybug beetles tend to live longer eating raisins, than potatoes. The purpose of this was to uncover the proper way to take care of your ladybird beetles.
Although we are still uncertain about how much water we should give the ladybird beetles on a daily basis, we are still glad to share our results. Some errors that may have affected our results were that some of the ladybugs escaped during our experiments. Also, for a week, we put the (light) container in half light and half dark. During the process of this experiment, we have learned the importance of keeping good records. For example, some of our class mates didn't keep good records, so they did not have enough data to do a good analysis.  Good record keeping gave us enough data to support a conclusion with confidence. We also learned that you have to attentively care for all creatures--even the smallest insects--if they are to survive.

Painted Lady Butterfly Life Cycle

Sophia H, Katie E, Shanti M

Our display is focused on the painted lady butterfly life cycle. Each of us did an experiment to learn more about Painted Lady Butterflies in one part of their life cycle.

Katie wanted to know how the amount of light affects their weight. She started with 4 larvae and placed 2 in each group.Butterflies raised in the light gained more 2 mg weight than those raised in the dark. One uncertainty was that while both butterflies in the dark emerged from their chrysalises, only one of the butterflies raised in the light emerged.

Sophia also started with 4 larvae. Her plan was to see whether the butterflies fed more often in the light or in the dark. All of the larvae formed chrysalises, but none emerged, so Sophia was unable to complete her experiment.

Shanti wondered whether butterflies would favor purple colored sugar water to a yellow solution. She used 3 painted lady butterflies. She observed them feeding on ten different days. Each time, she observed for 20 - 30 minutes. On average, they fed from the purple colored water three times more often than from the yellow colored. One source of uncertainty is that butterflies reached the end of their lifespan at different times, so that might have affected the data near the end of the experiment.

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