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Table 2.

Overview of experimental subsets of setup 2

Landmark properties
Experiment 2NVisualTactileSearch densities at rear end of landmark1 (%)Pvalue2Group
2A 24 Black Rough 2.38±1.47 
2B 25 Grey Rough 0.74±0.61 <0.001 
2C 19 Black Smooth 0.83±0.68 <0.01 
2D 12 Invisible Rough 0.89±0.99 <0.05 
Landmark properties
Experiment 2NVisualTactileSearch densities at rear end of landmark1 (%)Pvalue2Group
2A 24 Black Rough 2.38±1.47 
2B 25 Grey Rough 0.74±0.61 <0.001 
2C 19 Black Smooth 0.83±0.68 <0.01 
2D 12 Invisible Rough 0.89±0.99 <0.05 

Throughout the whole experiment the ants faced a black and rough landmark in position 9 during training. For tests, landmark properties were altered but all landmarks were presented in the LM-position=7.5 m, i.e. with the rear end of the landmark at 7.5 m. Mean search densities of all experiments at the rear end of the test landmark (test section: 7-7.5 m) were compared statistically. Different letters (last column) indicate significant difference atα=5%.

1

All values given are mean ± s.d.

2

P values for pair-wise comparison against test 2A (Kruskall-Wallis test with Dunn post test).

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