Which Stats test to use?

taniab

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Jan 13, 2019
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I have an experiment to look at habitat preferences of beetles.
In one test, a beetle is on his own in an arena and we measured the % of time he spends in each of THREE types of habitat (open, bush and underground).
I repeat this experiment with several beetles.
In the second test, beetles are placed together with a predator in the arena and they are again observed for their % time in each habitat.

I want to test if the amount of time spent in each habitat is affected by the presence of the predator.
I know I can use a Chi Squared test for habitat preference in test 1 on its own- since the expected % time in each habitat would be 33%.
But how can I compare the % time in each of the three habitats when the predator is absent (test 1) and present (test 2)?
Can I use a nested or a two-way Anova? Or a different test altogether?
 
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