Journal Article

On the occurrence of a possible bioconversion of linolenic acid into docosahexaenoic acid by the copepod <i>Eucyclops serrulatus</i> fed on microalgae

Ch. Desvilettes, G. Bourdier and J.Ch. Breton

in Journal of Plankton Research

Volume 19, issue 2, pages 273-278
Published in print February 1997 | ISSN: 0142-7873
Published online February 1997 | e-ISSN: 1464-3774 | DOI: http://dx.doi.org/10.1093/plankt/19.2.273
On the occurrence of a possible bioconversion of linolenic acid into docosahexaenoic acid by the copepod Eucyclops serrulatus fed on microalgae

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Reared in fertilized basins, Eucydops serrulatus appeared to be able to biosynthesize 22:6ω3 from dietary 18:3ω3. The development of zooplanktonic biomass, strongly dominated by Eucydops, coincided with the occurrence of a Chlorophycean bloom. Zooplankton phospholipids were rich in 22:6ω3 (14.5–25.9% of total fatty acids), while this fatty acid was lacking in grazed Chlorophyceae. On the other hand, Chlorophyceae contained high proportions of 18:3ω3. This last fatty acid was possibly bioconverted into 22:6ω3 and incorporated in the phospholipids of E.serrulatus.

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Subjects: Marine and Estuarine Biology ; Zoology and Animal Sciences

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