Fig. 1. Daily water gain (A) and cloacal fluid volume (B) were strongly affected by diet concentration (0.07–2.5 mol l^–1 sucrose solutions) and the provision of supplementary drinking water (solid bars; open bars indicate no added water). Water gain (ml day^–1) was calculated as the sum of metabolic + preformed + free water volumes (for details see text). Horizontal lines indicate mean body mass in g. Values are means ± 1 S.D. (N=7).

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