. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 380 A. M. JUNGREIS AND G. R. WYATT trehalose (Wyatt, 1961, 1963). In an experiment on this phenomenon, six days after injury, trehalose in both fat body and haemolymph were well above their pre-injury levels (Table II, group H). In addition, tissue placed in medium con- taining protein retained only 52% of its sugar, which was no more than in medium without protein, and less than that retained by tissue from uninjured diapausing pupae. Hence, the retentiveness of the fat body appeared to be de- creased following injury to pu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 380 A. M. JUNGREIS AND G. R. WYATT trehalose (Wyatt, 1961, 1963). In an experiment on this phenomenon, six days after injury, trehalose in both fat body and haemolymph were well above their pre-injury levels (Table II, group H). In addition, tissue placed in medium con- taining protein retained only 52% of its sugar, which was no more than in medium without protein, and less than that retained by tissue from uninjured diapausing pupae. Hence, the retentiveness of the fat body appeared to be de- creased following injury to pupae. Uptake of trehalose and other solutes into fat body The experiments on release of trehalose by fat body in vitro indicated signif- icant changes during ontogeny of the cecropia silkmoth, which suggested that changes in solute uptake might also be found. Penetration into fat body can be measured readily by observing the disappearance of a radioactive solute from. 5 10 Incubation time (mm.) FIGURE 5. Representative curves showing solute penetration into fat body of cecropia silkmoth larvae and pupae. Fat body was incubated with 14C-solutes together with 3H-inulin. and percentage penetration into intracellular water was calculated as described in Materials and Methods. (A) Fat body from debrained diapausing pupae. (B) Fat body from fifth stage larvae. Tissue for glycerol and glucose uptake came from larvae 1 and 3 days after spinning; tissue for trehalose uptake was from fully-grown feeding larvae; •, trehalose; Q, glucose; O, 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
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