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

Energy partitioning, composition of lipids and fatty acids, and their utilization by embryos were determined in the lecithotrophic shrimp Macrobrachium borellii during seven development stages. The biochemical composition at stage I is represented by lipids, proteins, and carbohydrates, with 29.3, 2...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Heras, Horacio, González Baró, María del Rosario, Pollero, Ricardo José
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Bioquímica
Ciencias Exactas
lecithotrophic shrimp
embryos
Lipid
Fatty Acid
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139286
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139286
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Bioquímica
Ciencias Exactas
lecithotrophic shrimp
embryos
Lipid
Fatty Acid
spellingShingle Bioquímica
Ciencias Exactas
lecithotrophic shrimp
embryos
Lipid
Fatty Acid
Heras, Horacio
González Baró, María del Rosario
Pollero, Ricardo José
Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii
topic_facet Bioquímica
Ciencias Exactas
lecithotrophic shrimp
embryos
Lipid
Fatty Acid
description Energy partitioning, composition of lipids and fatty acids, and their utilization by embryos were determined in the lecithotrophic shrimp Macrobrachium borellii during seven development stages. The biochemical composition at stage I is represented by lipids, proteins, and carbohydrates, with 29.3, 28.7, and 0.2% dry weight, respectively. The former two were identified as the major energy-providing components, contribut- ing 131 and 60 cal/100 mg egg, dry weight, respectively. The overall conversion efficiency (CE) was 45.0% (calculated as per- centage of vitelline energy transformed into embryonic tissues). Lipids were the most important energy reserve (CE 39.3%), fol- lowed by proteins (CE 57.1%), both being simultaneously uti- lized during development while carbohydrates were synthe- sized de novo (CE 587.5%). Variation in the lipid class compo- sition of embryos and vitellus showed an accumulation of triacylglycerols (TAG) and phospholipids (PL) up to stage IV, a more active accumulation and selective utilization phase (stages V and VI), and a consumption and de novo synthesis period until hatching. Structural lipids (PL and cholesterol) and pig- ment astaxanthin were selectively conserved in embryos, but TAG, hydrocarbons, and esterified sterols were preferentially depleted. Monounsaturated fatty acids (FA) were the major group in TAG, whereas polyunsaturated FA (PUFA) were the major group in PL after organogenesis. Certain PUFA such as 22:6n-3 and 20:5n-3 were selectively accumulated in PL.
format Articulo
Articulo
author Heras, Horacio
González Baró, María del Rosario
Pollero, Ricardo José
author_facet Heras, Horacio
González Baró, María del Rosario
Pollero, Ricardo José
author_sort Heras, Horacio
title Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii
title_short Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii
title_full Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii
title_fullStr Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii
title_full_unstemmed Lipid and fatty acid composition and energy partitioning during embryo development in the shrimp Macrobrachium borellii
title_sort lipid and fatty acid composition and energy partitioning during embryo development in the shrimp macrobrachium borellii
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/139286
work_keys_str_mv AT herashoracio lipidandfattyacidcompositionandenergypartitioningduringembryodevelopmentintheshrimpmacrobrachiumborellii
AT gonzalezbaromariadelrosario lipidandfattyacidcompositionandenergypartitioningduringembryodevelopmentintheshrimpmacrobrachiumborellii
AT polleroricardojose lipidandfattyacidcompositionandenergypartitioningduringembryodevelopmentintheshrimpmacrobrachiumborellii
bdutipo_str Repositorios
_version_ 1764820457388769280

Ejemplares similares