Fig. 3. Effect of salinity (filled bars) and of addition of calcium (bars with diagonal lines) or sodium (bars with horizontal lines) on sea bream larvae whole-body calcium influx after 8 h (A) or 24 h (B) exposure. At 10%SW and 25%SW, calcium and sodium were added to match levels at 100%SW. At 100%SW, calcium levels were added to match those at 150%SW (see Materials and methods and Table 1). Each bar represents the mean least squares adjusted for body mass and respective S.E.M. Identical letters indicate groups that do not differ statistically at P=0.05. The daggers indicate 100% mortality; NA, not tested.