Open AccessThe potential of liposomes as a nutrient supplement in first‐feeding marine fish larvae
Author(s) -
Koven,
Earl T. Barr,
Hadas,
BenAtia,
Guihai Chen,
M.S. Weiss,
Tandler
Publication year - 1999
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1046/j.1365-2095.1999.00121.x
Subject(s) - biology , fish larvae , larva , fish <actinopterygii> , marine fish , nutrient , fishery , ichthyoplankton , zoology , ecology
The ingestion rate (ng liposome larva –1 h –1 ) of extruded [1– 14 C] palmitic acid‐labelled liposomes containing physiological saline (PHS) or cod fish extract (CFE), was tested in 5‐day‐old gilthead seabream Sparus aurata and white grouper Epinephelus aeneus larvae. A follow‐up study compared the assimilation of radioactive free fatty acid (FFA) label of these two liposome treatments into six phospholipid and neutral lipid fractions as well as the nonlipid fraction in 5‐day‐old seabream. In seabream larvae, there was a 50‐fold ( P < 0.05) increase in the net consumption rate when fed CFE liposomes (2305.8 ng liposome larva –1 h –1 ) compared with liposomes containing physiological saline (42.7 ng liposome larva –1 h –1 ). A similarly significant ( P < 0.05) but less marked pattern was also observed in the grouper larvae where the CFE treatment larvae ingested 238.5 ng liposome larva –1 h –1 compared with 54.3 ng liposome larva –1 h –1 in larvae fed the PHS liposomes. In seabream larvae ingesting CFE and PHS liposomes, radioactivity was found in all larval fractions analysed. However, marked treatment differences ( P > 0.05) in assimilation were found only in the triacylglycerol fraction (3.4 and 0.6 dpm larva –1 h –1 , respectively) and nonlipid fraction (11.2 and 15 dpm larva –1 h –1 , respectively).