The sparida species are much appreciated by Tunisian consumer's in spite of their small size. The great interest in polyunsaturated fatty acids (n-3) is due to the importance they have in the Mediterranean diet in addition to their ability to prevent and protect against a great number of diseases especially cardiovascular ones. In the present work, we have followed the polyunsaturated fatty acids (n-3) mass progress in an immature sparida species (Diplodus annularis) from the Gulf of Tunis according to seasons. The results obtained by gas chromatograph with polar capillary column reveal a significant variation (P < 0.01) of total fatty acids according to seasons: 0.49; 2.93; 1.55 and 0.77 mg/g wet weight for autumn, winter, spring and summer respectively. These results reveal better polyunsaturated fatty acids (n-3) values during winter in immature Diplodus annularis form the Gulf of Tunis.
A. Chaouch, I. Bouhlel, I. Chraief, M. Hammami, A. El Hani