Influence of Salinity on the Lipid Composition and the Fatty-Acid Pattern of Muscle and Hepatopancreas of the Chinese CrabEriocheir sinensis

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Abstract
The lipid composition and the fatty acid repartition of muscle and hepatopancreas from E. sinensis adapted to fresh water or sea water are analyzed. Lipid content from these 2 tissues does not significantly change following a variation in the salinity of the external medium. A slight decrease in the triglyceride concentration (.+-. 20%) of hepatopancreas and a very slight increase in the polyunsaturated fatty acid amount of phospholipids isolated from muscle and hepatopancreas are noted when the crab is transferred from fresh water to sea water. The control that the cell exerts on the utilization of reducing equivalents during osmoregulation could not depend on lipid metabolism.