. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 102 WILFRED J. WILSON Ai Ae 25% 50% 75% 100% 125% 15O% Sea water percentage 175% FIGURE 4. The relation of the osmotic concentration of the haemolymph (Ai) of Ligia pallasii to the concentration of the medium (Ae) at 12° C (continuous line) and 22° C (broken line). Two times the standard error has been plotted on each side of the means for internal osmotic concentrations at each temperature-salinity concentration. Effects of size and sex. From each temperature-salinity medium, an equal number
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 102 WILFRED J. WILSON Ai Ae 25% 50% 75% 100% 125% 15O% Sea water percentage 175% FIGURE 4. The relation of the osmotic concentration of the haemolymph (Ai) of Ligia pallasii to the concentration of the medium (Ae) at 12° C (continuous line) and 22° C (broken line). Two times the standard error has been plotted on each side of the means for internal osmotic concentrations at each temperature-salinity concentration. Effects of size and sex. From each temperature-salinity medium, an equal number of male animals between and g and female animals between and g were selected for measurements of osmotic concentration. Sex, weight, and internal osmotic pressure of animals in 150%, 100%, and 50% sea water at 12° and at 22° C were determined. No significant differences in regulatory abilities in relation to weight or sex could be demonstrated. Rates of osmotic and u'dcjlit change. Animals adapted to 150% sea water at 12° and 22° C were transferred to 50% sea water at the same temperatures. Internal osmotic concentrations and weights were determined at 0, 2, 4, 8, 16, 24, and 48 hours. These measurements are plotted in Figures 5 and 6. Comparing rates of change in internal osmotic concentrations, a statistically significant difference (P < ) was demonstrated between 12° and 22° C. The internal osmotic concentration of the haemolymph of animals adapted to 22° C came to equilibrium at a faster rate than that of animals adapted to 12° C. The internal osmotic concentration dropped from Ai -- to Ai -'• at 12° C in 48 hours and from A* == to Ai = at 22° C in 48 hours (Fig. 5).. 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 the original Marine Biological Laboratory (W
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
