. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. B. UREA EXCRETION. 12 24 36 48 ' 96 TIME (hr) 108 240 FIGURE 8. Whole body net excretion rates over 12 h periods of (A) ammonia and (B) urea in Cardisoma carnifex exposed to either freshwater (open bars, solid lines) or seawater (cross-hatched bars, dotted lines) in the laboratory. See text for details of treatment regimes. Means ± 1 Data did not differ significantly between hemolymph-sampled and non-sampled groups in freshwater and have been combined, n = 16-17 for freshwater; n = 11-12 for seawater. t = significant
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. B. UREA EXCRETION. 12 24 36 48 ' 96 TIME (hr) 108 240 FIGURE 8. Whole body net excretion rates over 12 h periods of (A) ammonia and (B) urea in Cardisoma carnifex exposed to either freshwater (open bars, solid lines) or seawater (cross-hatched bars, dotted lines) in the laboratory. See text for details of treatment regimes. Means ± 1 Data did not differ significantly between hemolymph-sampled and non-sampled groups in freshwater and have been combined, n = 16-17 for freshwater; n = 11-12 for seawater. t = significant difference (P < ) between freshwater and seawater groups at a comparable time. * = significant difference (P < ) within each group for the following comparisons: the 36-48-h hydration value is tested against the 0-12-h hydration value; the 96-108-h re- hydration value is tested against the 36-48-h hydration value; and the 10-day (240 h) hydration value is tested against the 36-48-h hydration value. low levels of uric acid) but not those of Gifford (1968) on C. guanhumi (high ammonia and high uric acid, urea not assayed). Gifford also noted copious white deposits of uric acid in the hemocoel. Similar white deposits were observed (without analysis) in the Palau specimens of C. carnifex (Henry and Cameron, 1981; Wood and Randall, 198la) but did not occur in the Moorea animals. An anecdotal comment by Bright (1968) may offer some resolution of this dilemma. Bright noted that in C. crassiim FIGURE 7. Changes relative to field measurements in (A) hemolymph ammonia concentration, (B) hemolymph urea concentration, and (C) hemolymph glucose concentration in Cardisoma carnifex exposed to either freshwater or seawater in the laboratory. Other details as in legend to Figure Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
