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Ecology Fair University of Minnesota Monarch Lab

Abstracts from Highland Elementary 2009

Highland Elementary
1700 Saunders
St. Paul, MN 55116

Year: 2009
Teacher(s): Eileen Cotter

Colorful Mealworms

Ben E, Fiston L

Question:  How does the color of the mealworm food affect the color of the mealworms?
Hypothesis:  The mealworms will become a lighter version of the color of the food that they are fed.
Description of Experiment:  We put 5 giant mealworms and 10 normal mealworms in four different groups.  We fed one group Fiber One cereal that we crushed and dyed green, one blue, one red, and one control group we didn't change the color.  We decided to take pictures of them once or twice a week to monitor if their color is changing or not.
Conclusion:  Our mealworms have not changed color yet, but we have only had them in the colored food for two weeks.  Our experiment is not finished yet, so we don't have a conclusion.


On and Off

Justine A, Lillian G, Kathryn L

The question we wanted to answer is:

How does light affect the growth of tobacco hornworm larvae?

Our hypothesis is:

The tobacco hornworms kept in normal light and dark will grow the fastest.

In our experiment, we decided to put an equal number of larvae in three different kinds of light -- dark all the time, light all the time, and normal light and dark.  We wanted to make sure that the heat from the light wasn't making a difference, so we put the dark ones in a box under the same light as the light ones and we put the normal light and dark ones in a box under the light at night.  To see which ones grow the fastest, we decided to weigh them twice a week and compare the three groups.

We had a lot of trouble getting enough tobacco hornworms that were the same age, so our experiment is not finished.  We do not have a conclusion yet.


pH Survivors

Tate M, Chris W, Cam F

Question:  How much difference in pH can mosquito larvae survive?

Hypothesis:  Most mosquito larvae will survive in pond water with a pH of 6.82 and the least will survive in pond water with a pH of 3.49. 

Experiment:  In our experiment, we added vinegar or dish soap to pond water to change the pH.  We made five different water samples.  One was the control, so we left it just plain pond water and it had a pH of 6.59.  The others had pH's of 6.82, 5.27, 4.45 and 3.49.  We will put the same number of larvae in each sample of water.  We will count the number of larvae that survive each pH.

Conclusion:  Our experiment isn't finished yet, so we don't have a conclusion.


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