. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SALT AXD WATER BALANCE IX CRABS 17 crabs, maximum weight gains occurred during the first hour after transfer to 80% SW and weight returned to normal by about the tenth hour. I'nycttia gained a maximum of \A% body weight (bw) compared with bw for Libinia. Nephropore-occluded crabs of both species gained at least 5% bw after 4 hr of exposure to 80% SW. Empirically, it has been found that an equation of the form y -= Ct exp(—kt) provides a good description of average weight changes during the first several hours of exposu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SALT AXD WATER BALANCE IX CRABS 17 crabs, maximum weight gains occurred during the first hour after transfer to 80% SW and weight returned to normal by about the tenth hour. I'nycttia gained a maximum of \A% body weight (bw) compared with bw for Libinia. Nephropore-occluded crabs of both species gained at least 5% bw after 4 hr of exposure to 80% SW. Empirically, it has been found that an equation of the form y -= Ct exp(—kt) provides a good description of average weight changes during the first several hours of exposure to 80%, S\Y. Data may be fitted to this equation by regressing 5- o. 0 2 3 49 HOURS IN 80% SW 12 FIGURE 1. Water influx as urine production and volume change in specimens of Libinia cmarginata and Pu(/cttia froducta transferred from 100 to 80% sea water. For both species, values for urine production rates (Libinia, N = 2; Put/cttia, X = 9) are indicated by the solid squares and are read from the right ordinates. Values for the data which follow are read from the left ordinates. Open squares indicate the cumulative volume of urine produced from time 0 and are based on the above data. The larger solid circles indicate the weight gains in nephropore-occluded crabs (Libinia. N = 7; Pugcttia, N = 7). Open circles indicate the weight gains in normal crabs (Libinia, X == 19; Pui/cttia, N = 10). The smaller solid circles indicate the calculated sum of the cumulative volume of urine, and the weight gain in normal crabs, an estimate of the total amount of water which entered the crab since time 0. Xote that there is a discontinuity and a change of scale in the 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, Mas
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
