Two other 2-way interactions were marginally significant: a) smaller wormlions constructed smaller pits, but this trend was more prominent in coarse than in fine sand (mass × sand type: F 1,94 = 4.093, P = 0.046); b) wormlions constructed larger pits in deep than in shallow sand, but this pattern was more prominent in fine sand ( F 1,94 = 3.966, P = 0.049).
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Wormlions prefer both fine and deep sand but only deep sand leads to better performance.
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