Collected reprints: Abstract 3059

Collected reprints

Abstract

Corneille, S.; Agius, C.; Ollevier, F. (1990). Comparison of the fatty acid profile of wild caught fingerlings and yolk sac sea bass (Dicentrarchus labrax) larvae with cultured healthy larvae and larvae suffering from whirling disease. Belg. J. Zool. 120: 157-164

Analysis of the fatty acids of total lipids of wild fingerlings (1-4 g) of sea bass (Dicentrarchus labrax) caught off the northcoast of France shows that more than 30% of total fatty acids consists of the two essential fatty acids eiopentaenoic (C20:5 n-3) and docosahaenoic (C22:6 n-3) acids. One- and three-day old yolk sac larvae have even higher amounts of these two important fatty acids (about 40%). On the other hand, laboratory-reared 60-day old larvae had much lower concentrations of C20:5 n-3 (4% of total fatty acids) and C22:6 n-3 (5,5% of total fatty acids). In larvae suffering from whirling or spinning disease the percentage of C20:5 n-3 was only 2,8% and only traces of C22:6 n-3 were found. These results emphasize the importance of these fatty acids for cultured sea bass larvae.

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