(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.


Figure 2


Fig. 2. Daily excretion rates (µmol day-1 g-1) of ammonia (A) and urea (B) in Himantura signifer during 10 days of exposure to 1{per thousand} water (control; open bars), or 10 days of exposure to a progressive increase in salinity from 1{per thousand} to 15{per thousand} (filled bars): 1{per thousand} (days 1, 2) to 5{per thousand} (days 3, 4) to 10{per thousand} (days 5, 6) to 13{per thousand} (days 7, 8) to 15{per thousand} (days 9, 10). Values are means ± s.e.m. (N=5 for control group; N=5 for experimental group). *Significantly different from corresponding control value; asignificantly different from the corresponding day 1 value; bsignificantly different from the corresponding days 1, 2 and 3 values; csignificantly different from the corresponding days 1, 2, 3 and 4 values.