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Journal articles
Incorporation and modification of dietary fatty acids in gill polar lipids by two bivalve species Crassostrea gigas and Ruditapes philippinarum
Abstract : Two bivalve species Crassostrea gigas and Ruditapes philippinarum were fed eight weeks with three mono-specific algae diets: T-Isochrysis galbana, Tetraselmis suecica, Chaetoceros calcitrans, selected on the basis of their polyunsaturated fatty acid (PUFA) composition. The incorporation and the modification of dietary fatty acids in C. gigas and R. philippinarum gill lipids were analysed and compared. Essential PUFA (20:4n-6, 20:5n-3 and 22:6n-3) and non-methylene interrupted PUFAs (known to be synthesised from monounsaturated precursors) contents of gill polar lipid of both species were greatly influenced by the dietary conditioning. Interestingly, oysters and clams responded differentially to the mono-specific diets. Oysters maintained higher 20:5n-3 level and higher 22:2j/22:i and n-7/n-9 ratio in gill polar lipids than clams. To better discriminate dietary and species influences on the fatty acid composition, a Principal Component Analysis followed by a MANOVA on the two most explicative components was performed. These statistical analyses showed that difference in fatty acid compositions attributable to species were just as significant as the diet inputs. The differences of gill fatty acid compositions between oysters and clams are speculated to result of an intrinsic species characteristic and perhaps of a group characteristic: Fillibranch vs. Eulamellibranch. © 2005 Elsevier Inc. All rights reserved.
Keywords :
alga
article
bivalve
clam
controlled study
Crassostrea gigas
fat intake
lipid analysis
multivariate analysis of variance
nonhuman
oyster
ruditapes phillipinarum
statistical analysis
Animals
Diet
Dietary Fats
Fatty Acids
Gills
Mollusca
algae
Bivalvia
Chaetoceros calcitrans
Isochrysis galbana
Ostreidae
Tetraselmis suecica
Venerupis (Ruditapes) philippinarum
https://hal.univ-brest.fr/hal-01763743
Contributor : Nicolas Renard <>
Submitted on : Wednesday, April 11, 2018 - 1:42:18 PM
Last modification on : Monday, September 7, 2020 - 10:52:08 AM
Contributor : Nicolas Renard <>
Submitted on : Wednesday, April 11, 2018 - 1:42:18 PM
Last modification on : Monday, September 7, 2020 - 10:52:08 AM