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The Effect of Starvation on the Biochemical Composition of the Digestive Gland, the Gonads and the Adductor Muscle of the Scallop <i>Flexopecten</i><i>glaber</i>

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Food and Nutrition Sciences 2013年第4期4卷 405-413页

作者： Khaoula Telahigue Tarek Hajji imen rabeh M’hamed El Cafsi Research Unit of Physiology and Aquatic Environment Faculty of Sciences of Tunis University of Tunis El Manar Tunis Tunisia

The effects of the starvation trial on the biochemical composition and the fatty acid dynamics in the triacylglycerol fraction of the digestive gland, gonads and adductor muscle of the scallop Flexopecten glaber were assessed. Results show that three weeks of food deprivation induce depletion of carbohydrates and a significant decrease in proteins and lipids. The noteworthy patterns recorded for the various classes of lipids were the increase of the amount of phosphatidylethanolamine against a strong decline of mono-diacylglycerols, triacylglycerol and phosphatidylserine classes in gonads. These results reflect the ability of Flexopecten glaber to remodel endogenous lipid classes in order to avoid the gonads deterioration. In the starved specimens, severe declines of the n-3 polyunsaturated fatty acid group were recorded in the triacylglycerol fraction of digestive gland and adductor muscle against the increase of this group in gonads. These results confirm the role of triacylglycerol as a polyunsaturated fatty acids reservoir and pointed out to their mobilization from storage organs to the developing gonads during the food shortage trial. Examination of fatty acid data revealed that food deprivation lead Flexopecten glaber to invest in saving and accumulation of highly unsaturated fatty acids in gonads. This applies mainly to the arachidonic acid (20:4n-6) and the docosahexaenoic acid (22:6n-3).

关键词： Starvation Scallop Chemical Composition Organs Fatty Acid

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