. The Biological bulletin. Biology; Zoology; Marine biology. i; 24 4t Hours Alter Transfer Figure 6. Nereis limnicola transferred into, and out of, salinity range of hyperosmotic regulation. For explanations, see Figure 5. (a) Transfer from 272 mM CI" to 27 mM CI- (N = 192). (b) Transfer from 24 mM CI" to 283 mM CI" (N = 276). sea water (283 mM CI") (three experiments). Althotigh the salinity transfer is the exact reverse of that just described, the initial concentration gradient set up between internal and external fluids is considerably less, about 115 mM CI", due to
. The Biological bulletin. Biology; Zoology; Marine biology. i; 24 4t Hours Alter Transfer Figure 6. Nereis limnicola transferred into, and out of, salinity range of hyperosmotic regulation. For explanations, see Figure 5. (a) Transfer from 272 mM CI" to 27 mM CI- (N = 192). (b) Transfer from 24 mM CI" to 283 mM CI" (N = 276). sea water (283 mM CI") (three experiments). Althotigh the salinity transfer is the exact reverse of that just described, the initial concentration gradient set up between internal and external fluids is considerably less, about 115 mM CI", due to the hyperosmotic body fluids of the worms in the old, lower salinity. The gradient would be reduced to zero after full adaptation to the new salinity. The results (an average of 28 worms per point) are graphed in Figure 6b. After the transfer there was a slow increase in the concentration of total body chloride, not reaching a value statistically the same as that for adapted worms (black arrow) for 24 hours. There was further change in concentration between 24 and 48 hours. There was an immediate loss of water, with a maximum delayed (as compared with Figs. 5b and 5a) to 12 hours after the transfer. This was followed by volume regulation, not yet complete after 48 hours. Net chloride gain was slow, with a maximum rate of +6 fj-M C\~, in the second half hour after trans-. 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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