How does flavor affect which food ants choose? If you set out five different tastes, ants crowd around one and nearly ignore the rest. This project tests which flavor wins.
You prepare a terrarium with 200 ants and five bread squares. Each square carries a different flavor including sweet and sour options. A plain water square serves as the control. Every two hours you count the ants on each square over five days.
The sweet bread draws the most ants by far. The plain water square is almost never visited.
Hypothesis
The hypothesis is that the ants will prefer a sweet flavor over the other flavors: sour, salty, bitter, and control (water).
Animals respond to the world around them by choosing certain foods over others. When ants encounter five different flavors, they crowd around one and nearly ignore the rest. The sweet bread draws the most ants by far, showing that taste drives their behavior.
Ants use taste to sense chemicals in food and choose what to eat. When offered five bread squares — each carrying a different flavor, including sweet and sour options — ants crowd around the sweet bread and nearly ignore the rest. A plain water square serves as the control and is almost never visited. You count the ants on each square every two hours over five days, and the pattern is clear: taste drives which food they choose.
Method & Materials
You will prepare a terrarium with a suitable habitat for the ants, prepare different solutions, and observe which flavor they prefer.
You will need 200 ants, 1 loaf of white bread, 1 glass terrarium, 1 digital camera, sand, leaves, 25 squares of tin foil, 1 eye dropper, 1 10 mL graduated cylinder, 1 magnetic stirrer, 1 water bath, 500g deionized water, 1g sodium chloride, 5g sucrose, 0.15g citric acid, and 0.15g caffeine.
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The results of the experiment showed that the ants were most attracted to the sweet flavored bread square, but on rare occasions they would visit the sour, bitter, and salty squares. They did not visit the control (water) station often.
Why do this project?
This science project is interesting because it can help people with ants living in their homes to uncover natural, effective ant bait.
Also Consider
Experiment variations to consider include testing different substances and carriers for the different flavors, and testing if ants prefer a sweet liquid to a sweet flavored solid.
Full project details
Additional information and source material for this project are available below.
