. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 490 DOROTHY F. TRAVIS gross observation and from histological studies (Travis, 1954, 1955). Without almost complete resorption in certain regions and at least partial in others, it would be impossible for the arthropod to expand the new soft body beneath the old skele- ton preceding molt and to shed its skeleton at molt. Effect of feeding and starvation on blood calcium, urine calcium and blood in- organic phosphate Experiments were performed to determine whether or not food plays a sig- nificant role in influencing total bl
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 490 DOROTHY F. TRAVIS gross observation and from histological studies (Travis, 1954, 1955). Without almost complete resorption in certain regions and at least partial in others, it would be impossible for the arthropod to expand the new soft body beneath the old skele- ton preceding molt and to shed its skeleton at molt. Effect of feeding and starvation on blood calcium, urine calcium and blood in- organic phosphate Experiments were performed to determine whether or not food plays a sig- nificant role in influencing total blood and urine calcium, and blood inorganic phosphate levels. Two groups of animals were used. One group was fasted and the other was fed every day. These experiments covered a period of two weeks, and analyses were made at the end of the first and second weeks. The results of these experiments (Table III) indicate that starvation fails to affect significantly TOTAL BLOOD CALCIUM VALUES OBTAINED DURING THE NORMAL MOLT CYCLE OF PANULIRUS ARGUS NUMBER OF ANIMALS USED 13 13 12 13 9 8 *—I—is—rt—4—fc—A. TIME IN DAYS FIGURE 3. Changes in total blood calcium during the normal molting cycle. The number of animals used per point on the graph is indicated along the top ordinate. All points represent the mean arithmetical values obtained from duplicate analyses on this number of animals. The vertical lines indicate plus or minus the standard error of the mean calculated by Fisher's (1948) method for a small sample. The solid horizontal line indicates the mean values obtained from 80 intermolt (late Stage C) animals. Dashes above and below the solid horizontal line indi- cate plus or minus the standard error of the mean. The vertical line at the bottom of the graph separates the premolt and postmolt period. The bottom ordinate represents the time in days preceding and following molting. The solid horizontal lines parallel to the bottom ordinate and broken by the letters D, A, B,
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
