. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 324 FRANCIS R. HORNE TABLE III rtilization of foodstuffs during estivation Foodstuffs (mg/mg DNA) Feeding snail Estivating snail (60 days) Amount, consumed in 60 days Protein ± (20)* ± (21) ()** Carbohydrait- ± (10) ± (5) ()** Lipid ± (12) ± (11) — * Mean ± standard deviation (number). ** MG consumed/g wet weight. as they were utilized, their respective concentrations were expressed in terms of the internal standard DNA. By using DNA values to adjust the
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 324 FRANCIS R. HORNE TABLE III rtilization of foodstuffs during estivation Foodstuffs (mg/mg DNA) Feeding snail Estivating snail (60 days) Amount, consumed in 60 days Protein ± (20)* ± (21) ()** Carbohydrait- ± (10) ± (5) ()** Lipid ± (12) ± (11) — * Mean ± standard deviation (number). ** MG consumed/g wet weight. as they were utilized, their respective concentrations were expressed in terms of the internal standard DNA. By using DNA values to adjust the foodstuff concentra- tions of estivating snails to values comparable to those of active snails, it was possible to estimate the amount of foodstuff metabolized on a wet weight basis during dormancy. Surprisingly little lipid was used, whereas carbohydrate and protein accounted for almost all of the dry weight loss. Protein made up 57% and carbohydrate 35% of the dry weight consumed for energy. Complete depletion of polysaccharide deposits (glycogen and galactogen) occurred in about 70 days (Fig. 1). It is not yet known if both lipid and protein or only protein are used once all of the 120 100 75 o 50 25. 34567 DAYS ESTIVATION FIGURE 1. Rate of disappearance of reserve polysaccharide with estivation; Mean ± (Number ^ 5) 80. 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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