Fig. 5. Mg2+, Cl–, SO42–,
Na+, Ca2+ and K+ excreted in rectal fluid
over 48 h by toadfish acclimated to 9, 35 and 50 ppt (µmol
kg–1 h–1). The fraction of total
Mg2+ and Ca2+ excreted in precipitates is shown in
stacked bars. Values are means ± s.e.m. (N
4). An asterisk
(*) indicates statistically significant difference from 35 ppt
(P<0.05).