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Title

Fatty acid composition of Ruditapes decussatus spat fed on different microalgae diets

AuthorsAlbentosa, M.; Labarta, Uxío ; Fernández-Reiriz, María José ; Pérez-Camacho, A.
KeywordsFatty acids
Microalgae diets
Clam spat
Issue Date1996
PublisherElsevier
CitationComparative Biochemistry and Physiology - A - Molecular and Integrative Physiology 113(2): 113-119 (1996)
AbstractThe fatty acid composition of the Ruditages d.ecussatw spat fed on three different microalgal diets during 4 weeks was determined. The fatty acid pattern of each diet was also analysed. The diets used were Zsochrysk galbana, clone T-ISO, Tetraselmis suecica, and Phaeodactylum tricornutum. The fatty acid composition of the spat was usually well correlated with that of the diet supplied. Major differences among spat cultures were found in 14:0, 16:0, 16:ln-9, 16:ln-7, 18:ln-9, 18:2n-6, 18:3x1-3, 18:4n-3, 20:5n-3, 22:5n-6 and 22: 6n-3 fatty acids. These differences were correlated with the particular fatty acid content of each diet supplied. It has been shown that R. decussatus spat have a very low capacity to elongate and desaturate linolenic acid to n-3 PUFA, so when 20: Sn-3 or 22:6n-3 were not present in the diet, they were also absent, at least in measurable amounts, in the clams. The absence of any of the “essential” fatty acids, 20 : Sn-3 in T-IS0 or 22 : 6n-3 in Tetmselmis, did not limit spat growth, so their role as “essential” fatty acids might be a matter for discussion. Finally, the nutritive value of each diet was discussed in terms of its fatty acid composition.
Description7 páginas, 3 tablas
Publisher version (URL)http://dx.doi.org/10.1016/0300-9629(95)02041-1
URIhttp://hdl.handle.net/10261/59394
DOI10.1016/0300-9629(95)02041-1
ISSN0300-9629
Appears in Collections:(IIM) Artículos
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