Fig. 5. Neobatrachus aquilonius. (A) Total osmotic concentration of the plasma and urine of control (plasma N=8, urine N=10) and cocooned aestivating frogs excavated from a claypan in 2003 (plasma N=6, urine N=5) and non-cocooned aestivating frogs from a dune swale in 2004 (plasma N=7, urine N=8). ^* indicates significant difference between plasma and urine osmolalities (one-tail t-test, P<0.05). (B) Relationship between plasma and urine osmolality for control and excavated cocooned frogs from a claypan in 2003 and excavated without cocoons from a swale in 2004. The broken line represents isosmolality.