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Fig. 2. The amount of urea excreted (µmol N 3 h-1 g-1 wet
mass fish) by unfed (control; white squares) and fed (grey squares)
Periophthalmodon schlosseri at 3 h intervals during the 24 h period
post-feeding. Values are means + S.E.M.
(N=4). *Significantly different from the corresponding
control value, P<0.05. aSignificantly different from
0-3 h, P<0.05; bsignificantly different from 3-6 h,
P<0.05; csignificantly different from 6-9 h,
P<0.05; dsignificantly different from 9-12 h,
P<0.05.