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Manipulation of fatty acids in the estuarine clam Meretrix casta (Gmelin, 1791) by supplementation with the microalgal diet, Isochrysis galbana

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Relation http://eprints.cmfri.org.in/9113/
 
Title Manipulation of fatty acids in the estuarine clam Meretrix casta
(Gmelin, 1791) by supplementation with the microalgal diet,
Isochrysis galbana
 
Creator Jayasankar, Vidya
Kizhakudan, Joe K
Margaret Muthu Rathinam, A
Santhosi, I
Rajendran, P
Thiagu, R
 
Subject Bioactive compounds
Clam
Algae
 
Description The present study evaluated the changes in fatty acid profile of the estuarine clam Meretrix casta, an important food
organism used in the larval rearing of scyllarid lobsters, after supplementation with the microalgal species Isochrysis galbana.
The uptake and assimilation of lipids from the microalgal feed were verified by gas chromatographic analysis of fatty acids
in the clam tissues after eight days of feeding with I. galbana. Increase in concentrations of polyunsaturated fatty acids
(PUFA), in particular docosahexaenoic acid (DHA, C22:6n3) and C18:2n-6, was observed in clams supplemented with
I. galbana. Changes in monounsaturated fatty acid (MUFA) composition were less marked and related to the increasing
proportions of C18:1, after supplementation. Feeding with I. galbana also induced a decrease in the proportion of saturated
fatty acids, which was related to decrease in proportions of both C16:0 and C18:0. Although the fatty acid composition
showed significant differences, the gross lipid content of the clam tissues did not seem to be excessively influenced by the
algal feeding. Tissues from clams supplemented with I. galbana are being evaluated as feed for sand lobster larval trials.
 
Publisher CMFRI
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/9113/1/Vidya_99-102.pdf
Jayasankar, Vidya and Kizhakudan, Joe K and Margaret Muthu Rathinam, A and Santhosi, I and Rajendran, P and Thiagu, R (2012) Manipulation of fatty acids in the estuarine clam Meretrix casta (Gmelin, 1791) by supplementation with the microalgal diet, Isochrysis galbana. Indian Journal of Fisheries, 59 (3). pp. 99-102.