2015
DOI: 10.1007/s11745-015-4006-z
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Essential Fatty Acid Assimilation and Synthesis in Larvae of the Bivalve Crassostrea gigas

Abstract: Essential fatty acids (EFA) are important for bivalve larval survival and growth. The purpose of this study was to quantitatively assess for the first time through a mass-balance approach dietary EFA incorporation and synthesis within Crassostrea gigas larvae. A first experiment was carried out using two microalgae, Tisochrysis lutea (T) and Chaetoceros neogracile (Cg), as mono- and bi-specific diets. A second experiment using a similar design was performed to confirm and extend the results obtained in the fir… Show more

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Cited by 43 publications
(35 citation statements)
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“…These lipids play important structural roles in regulating cell‐membrane fluidity and other cellular functions (Hall, Parrish, & Thompson, ; Hazel, Williams, Livermore, & Mozingo, ). In general, bivalves have limited or no ability to synthesize PUFAs or to elongate shorter‐chained compounds (da Costa et al., ) but require these for growth and development (Chu & Greaves, ; Delaunay, Marty, Moal, & Samain, ; Marty et al., ; Waldock & Holland, ; Whyte, Bourne, & Hodgson, ). Although the effects of nutrition on larval growth and survival have been studied extensively in a wide range of molluscs (see review of Marshall, Mc Kinley, & Pearce, ), the effects of food on broodstock and subsequent larval development performances have received less attention.…”
Section: Discussionmentioning
confidence: 99%
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“…These lipids play important structural roles in regulating cell‐membrane fluidity and other cellular functions (Hall, Parrish, & Thompson, ; Hazel, Williams, Livermore, & Mozingo, ). In general, bivalves have limited or no ability to synthesize PUFAs or to elongate shorter‐chained compounds (da Costa et al., ) but require these for growth and development (Chu & Greaves, ; Delaunay, Marty, Moal, & Samain, ; Marty et al., ; Waldock & Holland, ; Whyte, Bourne, & Hodgson, ). Although the effects of nutrition on larval growth and survival have been studied extensively in a wide range of molluscs (see review of Marshall, Mc Kinley, & Pearce, ), the effects of food on broodstock and subsequent larval development performances have received less attention.…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, several studies (Helm, Holland, Utting, & East, 1991;Jonsson, Berntsson, Andr e, & W€ angberg, 1999) have suggested that some PUFAs are essential for survival and development of O. edulis larvae as demonstrated for C. gigas larvae (da Costa, Robert, Qu er e, Wikfors, & Soudant, 2015).…”
Section: Introductionmentioning
confidence: 99%
“…Although it has been widely accepted that the capacity of bivalves to synthesize EFA is not sufficient or absent to meet nutritional requirements (da Costa et al, ), Waldock and Holland () suggested that C. gigas juveniles have the ability to elongate and desaturate the FA 18:3n‐3 to 20:5n‐3 and 22:6n‐3, but at insufficient rates to sustain optimal growth (Waldock and Holland, ). Nonetheless, more recently, a metabolic sequence was suggested in which an elongation of 18:4n‐3 to 20:4n‐3 occurred, followed by a desaturation at the Δ5 position to 20:5n‐3 (da Costa et al, ). The same authors also proposed an alternative sequence in which 18:3n‐3 is elongated to 20:3n‐3 and then desaturated to 20:4n‐3 by Δ8.…”
Section: Discussionmentioning
confidence: 99%
“…In the present study, both 18:3n‐3 and 18:4n‐3 dietary contents were higher with a dietary 100% microalgae level. This may suggest that the higher richness of the microalgae diet in these FA enabled the oysters to spare their initial reserves, which, in turn, may indicate a metabolic consumption of 18:3n‐3 and 18:4n‐3 in the synthesis of FA with a lengthier chain (da Costa et al, ; Waldock and Holland, ).…”
Section: Discussionmentioning
confidence: 99%
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