Figure 1From: Assessing the importance of burrows through behavioral observations of Parastacus brasiliensis, a Neotropical burrowing crayfish (Crustacea), in laboratory conditions Parastacus brasiliensis : time (seconds ± standard deviation) spent inside and outside the burrow. Gray bars denote nighttime and white bars daytime. An asterisk indicates a significant difference between daytime and nighttime according to a paired t test (p < 0.05). The letter ‘a’ indicates a significant difference between the white and gray bars with the same test.Back to article page