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Ecology Fair University of Minnesota Monarch Lab

Abstracts from Battle Creek Elementary 2007

Battle Creek Elementary
60 South Ruth St
St. Paul, MN 55119

Year: 2007
Teacher(s): Reba Batalden

How many aphids can a ladybug (H. convergens) eat in 24 hours?

Padra H, Rachel F, Kassy M

We tested how many aphids a ladybug could eat in a day. We took a ladybug and placed it in a petri dish with different amounts of aphids. We found that the lady bugs didn't eat all of the aphids except for one ladybug which ate all ten aphids placed in the dish. However, we discovered that a ladybug can have a small or big appetite. They can eat between 0 to 34 aphids in 24 hours. A ladybug can eat 12 aphids on average per day.


How strong are crayfish?

Ashton B, Tommy L

We weighed and measured the length of four crayfish and predicted that the largest would be the strongest one.  To test the strength of each crayfish, we attached washers to see how many they could pull 25 centimeters.  We found that some crayfish can pull more than their own weight and that size does not necessarily determine the one that would pull the most weight.


The Difference Between Battle Creek and Battle Creek Pond (LA-07) Using Macroinvertebrates

Theo A, Sarah P, Melissa T, Gavin H, Hailee S, Kalyna X, Duran C, Max S

We did our project on macroinvertebrates. We thought that it would be fun to see if the pond or the creek had more macroinvertebrates. Marcroinvertebrates are insects or bugs that live under water and have exoskeletons. We found Hirudinea, Coleoptera, Orthoptera, Diptera, Hemiptera, Trichoptera, Oligochaeta, Bivalvia, Gastropoda, and Ephemoroptera.


The Effect of Temperature on Cockroach Speed

Jerod B, Michael P

Our project is on German cockroaches. Cockroaches have been on the earth for 300 million years. There are about 3,500 species of cockroaches worldwide and 55 species found in the U.S. They come out at night to eat sweets, meet, grease, and starches. Their habitat is houses, apartments, restaurants, and hotels. And, it has 3 stages: egg, nymph, and adult. Our experiment is on German cockroaches and their speed in different temperatures.


Worm mania: Do worms grow more on healthy food or junk food?

Blong V, Max P, Marco C

We gave leftover food waste to 1000 red worms over three weeks.  500 worms were fed waste from fruits and vegetables and the other 500 were fed the same amount of chips, cookies, and crackers.  We weighed and counted the worms before and after the three weeks of feeding to see if one group grew and survived better than another.  Our hypothesis was that the group fed healthy food would grow more because the food would be good for them.


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