Figure 2From: Assessing the importance of burrows through behavioral observations of Parastacus brasiliensis, a Neotropical burrowing crayfish (Crustacea), in laboratory conditions Parastacus brasiliensis : Circadian activity of the seven crayfish monitored for 7 days. Bars represent time (s) active outside the burrows, and vectors indicate the means and 95% confidence intervals.Back to article page