. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 236 HENRY O. WERNTZ with sodium uptake, which will be discussed in the next section. Several aspects of the salt loss remain to be compared. Shaw and Sutcliffe found that the rate of salt loss by all routes from a 40-mg. G. duebeni varied from to micro- mole of NaCl per hour, being less when the animal had been adapted to a more dilute medium. For G. , the rate was to rnicromole per 0- 2 0-4 0. 6 CONC. OF MEDIUM , M/KG FIGURE 5. Comparison of rate of urinary salt loss in G. occanicus
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 236 HENRY O. WERNTZ with sodium uptake, which will be discussed in the next section. Several aspects of the salt loss remain to be compared. Shaw and Sutcliffe found that the rate of salt loss by all routes from a 40-mg. G. duebeni varied from to micro- mole of NaCl per hour, being less when the animal had been adapted to a more dilute medium. For G. , the rate was to rnicromole per 0- 2 0-4 0. 6 CONC. OF MEDIUM , M/KG FIGURE 5. Comparison of rate of urinary salt loss in G. occanicus and G. fasciatus. Points represent individuals. Curves connect means. Vertical lines show ±2 X the standard errors. Lockwood determined that in very dilute sea water both the brackish-water G. duebeni and the fresh-water G. formed urine hypotonic to the blood. In the higher concentrations of sea water the urine of G. duebeni became isotonic to the blood, but the urine of G. pulex remained hypotonic to the blood and also to the medium. Estimating the urine flow from the penetration of tritiated water, Lock- wood calculated that only rnicromole per hour of the NaCl loss from G. duebeni. 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 (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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