|Appears in Collections:||Aquaculture Journal Articles|
|Peer Review Status:||Refereed|
|Title:||Changes in lipid content, fatty acid composition and lipid class composition of eggs and developing larvae (0-40 days old) of cultured common dentex (Dentex dentex Linnaeus 1758)|
Henderson, R James
Bell, J Gordon
polyunsaturated fatty acid
|Citation:||Gimenez G, Esteves A, Henderson RJ & Bell JG (2008) Changes in lipid content, fatty acid composition and lipid class composition of eggs and developing larvae (0-40 days old) of cultured common dentex (Dentex dentex Linnaeus 1758), Aquaculture Nutrition, 14 (4), pp. 300-308.|
|Abstract:||Total lipid content, fatty acid (FA) composition and lipid class composition of common dentex eggs spawned at different times and larvae reared under different culture conditions until 40 days posthatch (dph) were analysed to get a general pattern of lipid composition during larval development. Two groups of larvae were kept under starvation to compare their FA composition with that obtained from normally fed larvae. To compare FA use or accumulation during larval development, results were grouped according to the developmental stage of the larvae instead of age in days posthatch. Saturated and monounsaturated FAs decreased along larval development, while polyunsaturated fatty acid (PUFA) content increased. The ratio of docosahexaenoic acid (DHA)/eicosapentaenoic acid shifted from 4 to 5 in early developmental stages to lower than 1 after metamorphosis. Arachidonic acid levels remained constant along larval development. Larvae kept 6 days under starvation consumed most of their n-3 PUFA while conserving the DHA to values at day 0. The results presented here are useful for the design of nutritional experiments, because there were differences detected in terms of lipid and FA composition between developmental stages with higher differences mainly found in first-feeding larvae and early developmental stages.|
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