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The Effect of Color On Red Harvester
Ant Movement
By: James Draham
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Problem Statement and Hypothesis
Are Red Harvester Ants attracted to or afraid of certain colors?
If I place Red Harvester Ants in the middle of an assay with colors, then they will go to green most of the time.
If I place Red Harvester Ants in the middle of an assay with colors, then they will not be attracted to a certain color (Null)
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Concepts
Assay
Eyesight of ants
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Design Diagram
Title: The effect of color on harvester ant movement
Hypothesis: If the ants are placed in the assay with colors, then they will be mainly attracted to green.
IV: Start the ant facing certain colors- Green, Red, White, or Black
Levels Control: Start Ant facing White
Start Ant facing Black
Start Ant facing Green
Start Ant facing Red
Trials 100 100 100 100
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Design Diagram (cont.)
DV: Harvester Ant Movment
Constants:
Assay used
Lighting
Time allowed for each ant
Type of Ant tested
Weather (Wind, etc.) *
*Hopefully conducted inside for no weather issues
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Safety Precautions
Wear a leather glove
Use tweezers to handle ants
Be positive that lids are sealed on containers
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Results
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Chi Square
(o-e)2/e
White:
(62-50)2/50=(12)2/50=144/50=2.88
Black:
(42-50)2/50=(-8)2/50=64/50=1.28
Red:
(69-50)2/50=(19)2/50=361/50=7.22
Green:
(27-50)2/50=(-23)2/50=529/50=10.58
Total:
2.88+1.28+7.22+10.58= 21.96
21.96 > 16.27
P value < .001
>.1% chance
Reject Null
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Before
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During
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After
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Results Graph
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Totals Graph
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Conclusions
Green
White/Red
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Errors
The Assay
Scared Ants
My hand
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Continuations
Different colors
Terrains
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Bibliography
http://insects.tamu.edu/extension/publications/epubs/e-402.cfm
Biology Concepts and Connections
http://insects.tamu.edu/fieldguide/cimg361.html
http://tolweb.org/treehouses/?treehouse_id=4421
http://www.tightloop.com/ants/whatEatsAnts.htm
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Acknowledgments
My Parents
Mrs. Pietrangelo
Carolina.com