Skip to Main content Skip to Navigation
Journal articles

Fatty acid composition of polar lipid classes during larval development of scallop Pecten maximus (L.)

Abstract : The major phospholipid classes in the larvae of the scallop Pecten maximus were phosphatidylcholine (PC) and plasmalogens (PLSM) (35.5 and 32.1 mol%, respectively). The minor classes were glycosyldiacylglycerol-like (GLY), phosphatidylinositol (PI), phosphatidylserine (PS) and non- plasmalogen phosphatidylethanolamine (PE) at 6.7, 9.1, 8.5 and 8.1 mol%, respectively. Abundance of phospholipid classes and their content of saturated, monounsaturated and polyunsaturated fatty acids remained relatively conserved during the course of larval development. During larval development there was a decrease in the amount of 20-carbon polyunsaturated fatty acids (PUFA) in the polar lipids, while the amount of 22-carbon PUFA remained constant. These changes, which occurred mainly during the lecithotrophic phase, imparted a specificity in PUFA composition to the different classes of polar lipids. During this phase, 20:5(n - 3) replaced 20:4(n - 6) in PI but decreased sharply in PLSM and, to a lesser extent, in PC. After the initial phase of composition changes, the fatty acid composition of the polar lipid classes became stable, with specific associations of some of the PUFA with certain polar lipid classes: 22:6(n - 3) with GLY, 20:5(n - 3) with PE, 20:4(n - 6) with PI. The 22:6(n - 3)/20:5(n - 3) ratio in PLSM during exotrophy was always twice as high as in the PC fraction.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-brest.fr/hal-01770745
Contributor : Nicolas Renard <>
Submitted on : Thursday, April 19, 2018 - 10:58:24 AM
Last modification on : Tuesday, June 23, 2020 - 3:38:20 AM

Links full text

Identifiers

Citation

Philippe Soudant, Y. Marty, J. Moal, H. Masski, Samain Jean François. Fatty acid composition of polar lipid classes during larval development of scallop Pecten maximus (L.). Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 1998, 121, pp.279--288. ⟨10.1016/S1095-6433(98)10130-7⟩. ⟨hal-01770745⟩

Share

Metrics

Record views

248