Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii

• DOI: 10.1007/s11745-000-0569-z
• Publication Date: 2006-11-13T17:41:03Z
• Authors: Horacio Heras; M. R. Gonzalez‐Baró; Ricardo J. Pollero
• Keywords: Lipidology; Lipidome

Abstract Energy partitioning, composition of lipids and fatty acids, their utilization by embryos were determined in the lecithotrophic shrimp Macrobrachium borellii during seven development stages. The biochemical at stage I is represented lipids, proteins, carbohydrates, with 29.3, 28.7, 0.2% dry weight, respectively. former two identified as major energy‐providing components, contributing 131 60 cal/100 mg egg, overall conversion efficiency (CE) was 45.0% (calculated percentage vitelline energy transformed into embryonic tissues). Lipids most important reserve (CE 39.3%), followed proteins 57.1%), both being simultaneously utilized while carbohydrates synthesized de novo 587.5%). Variation lipid class vitellus showed an accumulation triacylglycerols (TAG) phospholipids (PL) up to IV, a more active selective phase (stages V VI), consumption synthesis period until hatching. Structural (PL cholesterol) pigment astaxanthin selectively conserved embryos, but TAG, hydrocarbons, esterified sterols preferentially depleted. Monounsaturated acids (FA) group whereas polyunsaturated FA (PUFA) PL after organogenesis. Certain PUFA such 22∶6n−3 20∶5n−3 accumulated PL.