. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 8 ERIC G. BALL, CORNELIUS F. STRITTMATTER AND OCTAVIA COOPER 53 ml. reported by Gray and Hall (1930) for the blood sugar of the scup, it suggests that glycogen breakdown is occurring. Dr. C. T. Teng kindly analyzed for us the glycogen content of the gas gland immediately after its removal from three species of fish. Expressed in terms of glucose per 100 mg. of tissue, he found: scup sea robin mg., sea bass (Centropristus striatiis) mg. If these are representative values, it indicates that the g
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 8 ERIC G. BALL, CORNELIUS F. STRITTMATTER AND OCTAVIA COOPER 53 ml. reported by Gray and Hall (1930) for the blood sugar of the scup, it suggests that glycogen breakdown is occurring. Dr. C. T. Teng kindly analyzed for us the glycogen content of the gas gland immediately after its removal from three species of fish. Expressed in terms of glucose per 100 mg. of tissue, he found: scup sea robin mg., sea bass (Centropristus striatiis) mg. If these are representative values, it indicates that the glucose reserves of the gas gland are small in relation to its glycolytic capacity. Similar values are reported by Fange (1953). He found the glycogen content of the gas gland in Gad us callarias to range from to of the wet weight. Jill. 250 200 150 100 50 MEDIA CHANGED. .GLUCOSE - ADDED 0 10 20 30 40 50 MINUTES 60 70 80 90 FIGURE 4. The effect upon anaerobic glycolysis rate of changing the gas gland from an all-sodium medium to an all-potassium medium or vice versa. Conditions as described for the data presented in Figure 3. Glucose added to both flasks at the point indicated by the arrow. Weight of Gland A 153 mg.; Gland B 147 mg. A study of the effect of the concentration of glucose in the medium on the rate of glycolysis is portrayed in the data presented in Figure 2. There is a suggestion of a trend towards maximum glycolytic activity when the glucose concentration is 150 to 200 ml., but the rate of glycolysis varies considerably from one gland to another at any one glucose concentration. The cation composition of the medium appears to have a marked effect upon the rate of glycolysis. In Figure 3 are plotted the results of a series of experi- ments where the ratio of sodium to potassium in the medium was the only Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloratio
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
