Abstract
1. 1. The in vitro incorporation of 1- 14C-sodium acetate into chloroform—methanol extractable lipid of the hepatopancreas was shown to be linear up to 75 min in Pachygrapsus crassipes (intertidal marine crab) and Procambarus astacus (fresh-water crayfish). 2. 2. The turnover rate of hepatopancreatic lipid labeled with 1- 14C-sodium acetate is similar in intermolt animals and those destalked for 48 hr. 3. 3. The turnover rate of hepatopancreatic lipid labeled with 1- 14C-palmitic acid is lower in 48-hr destalked crayfish than in normal intermolt animals. 4. 4. Removal of the Y-organ does not alter the increase in hepatopancreatic lipid synthesis observed in destalked P. crassipes. 5. 5. Injections of ecdysterone into intermolt P. astacus does not result in an increase in the rate of lipid synthesis in the hepatopancreas.
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