Fle. Chu et S. Ozkizilcik, LIPID AND FATTY-ACID COMPOSITION OF STRIPED BASS (MORONE-SAXATILIS) LARVAE DURING DEVELOPMENT, Comparative biochemistry and physiology. B. Comparative biochemistry, 111(4), 1995, pp. 665-674
Changes in lipid class, fatty acid composition, protein, and dry and w
et weights of fertilized eggs and developing larvae of striped bass (M
orone saxatilis) fed with the live food, Artemia, were investigated, A
decrease of wet and dry weights and moisture was observed at the begi
nning of the larval stage, Larvae regained the original moisture level
, and wet and dry weights increased steadily after feeding, Total lipi
ds decreased from 190 mu g/egg in fertilized eggs to 151 mu g/egg duri
ng hatching and increased after feeding, When total lipid contents wer
e expressed as a percentage of larval dry weight, a decline of lipid d
id not occur until after feeding, Total protein, on the other hand, in
creased right after feeding, but there was some variation between days
, Polar lipids increased significantly from 20 mu g/egg at the egg sta
ge to 199 mu g/larva at 26 days post-hatching (DPH), 2 days before the
onset of metamorphosis, while neutral lipids declined from 175 mu g/e
gg to 80 mu g/larva during the same time period, Wax/steryl esters dec
reased from 150 mu g/egg in fertilized eggs to 32 mu g/larva at 26 DPH
, Triacylglycerols dropped from 21 mu g/egg to 15 mu g/larva before fe
eding and increased gradually after feeding, In contrast, the level of
cholesterol increased 2-3-fold, There was a significant increase of p
hospholipids, particularly phosphatidylcholine in larvae after feeding
, The fatty acid composition of fish larvae was significantly influenc
ed by the diet, Artemia, There was an indication of catabolism of endo
genous eicosapentaenoic and docosahexaenoic acids during metamorphosis
.