. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. \MINO ACIDS, NH3 AND SALINITY STRESS g "c o E E 60 50 | 40 £ 30 3- 20 10 0 SlOmOsm 1020 mOsm. 12 24 36 48 60 72 84 Time(hr) FIGURE 2. Time course of changes in ammonia excretion rates of propped-open M. dcmissus during low salinity acclimation. Mussels were previously acclimated to full strength sea water. Each point represents the mean excretion rate of twelve animals during the previous 12 hour interval. Error bars represent standard error. all time intervals except the first one ('0-12 hours). However, the quantities
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. \MINO ACIDS, NH3 AND SALINITY STRESS g "c o E E 60 50 | 40 £ 30 3- 20 10 0 SlOmOsm 1020 mOsm. 12 24 36 48 60 72 84 Time(hr) FIGURE 2. Time course of changes in ammonia excretion rates of propped-open M. dcmissus during low salinity acclimation. Mussels were previously acclimated to full strength sea water. Each point represents the mean excretion rate of twelve animals during the previous 12 hour interval. Error bars represent standard error. all time intervals except the first one ('0-12 hours). However, the quantities of ammonia produced by the isolated valves were in all cases less than the standard errors of whole animal excretion rates measured at the corresponding time intervals. Therefore, these nonnmssel sources of ammonia were not a source of contamination. Ammonia concentration hi hemolymph during acclimation Blood ammonia concentrations in control and experimental animals were not significantly different following both 4 and 12 hours exposure to test sea water TABLE I Ammonia production of isolated valves of M. demissus. Each value represents the mean ammonia production of five pairs of valves during the previous 12-hour interval. Time (hour) Ammonia production 1020 mOsm/kg HjO 510 mOsm kg 12 24 36 60 84 (±)* (±) (±) (±) (±) (±) (±) (±) (±) (±) NH3-N/ 12 hour (±SE).. 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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