Figure 3.

(a) The percentage of golden grey mullet (L. aurata) that responded to a mechanical stimulation in normoxia and various hypoxic conditions (black bars). Ten per cent C indicated no access to the surface at 10% oxygen saturation. Asterisks indicate significant difference from normoxia. (b) The percentage of fish that made an escape response in a direction away (white bars) or towards (black bars) the mechanical stimulus. Asterisks indicate different from random. From Lefrançois et al. (2005).