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Fig. 7. Estimated drinking rate (ml kg–1 h–1),
fluid absorption rate (ml kg–1 h–1) and
fractional fluid absorption of toadfish acclimated to 9, 35 and 50 ppt.
Drinking rates were estimated based on Mg2+ and
SO42– concentrations in rectal fluid samples and
9, 35 and 50 ppt water. Values are means ± s.e.m. (N=6). An
asterisk (*) indicates statistically significant difference from 35
ppt (P<0.05).