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The graphs show some of the results which formed part of the lab reports from investigations carried out by students. In most cases much more processing of results was carried out than is indicated by these single graphs. It is worthwhile remembering that the response shown by woodlice will vary according to the conditions of humidity in which they have been kept prior to carrying out the experiments.

Contents

Red Light vs Blue Light preference
Dim light vs Bright Light preference
Preferred Light Intensity
The effects of distance on alternation behaviour.
The Effect of clumping on water loss
The Effect of humidity on water loss

 

1. Red Light vs Blue Light preference

Red-Blue light graph
Thanks to Sandhya Deo for these results

 

2. Dim light vs Bright Light preference

Bright-Dim graph
Thanks to Sandhya Deo for these results

 

3. Preferred Light Intensity

Light intensity graph
Thanks to Wei-Hsin Chan for these results

 

4. The effects that distance travelled has on alternation behaviour.

In this experiment the woodlice were forced to make a right hand turn and then after a variable distance were given a choice of taking a left or right turn. Those that turned left showed the alternation behaviour. The expt was repeated with the forced turn being to the left and results for both were collated.

Alternation graph
Thanks to James van Rij for these results

 

5. The Effect of clumping on water loss

Water loss was measured by taking the drop in weight of 10 isolated woodlice and comparing this with the drop in weight of 10 woodlice which had been allowed to clump together as a group.

Clumping graph
Thanks to Rebecca Wilson for these results

 

6. The Effect of humidity on water loss

graf6.gif (5131 bytes)
Thanks to Adam Blower and Steven Hardy for these results

 

 

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