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Fatty Acid Composition of Early Non-Feeding Larvae of the European Flat Oyster, Ostrea Edulis

Published online by Cambridge University Press:  11 May 2009

M. M. Helm ,
D. L. Holland ,
S. D. Utting  and
J. East
M. M. Helm
Affiliation:
Blandford, Lunenburg County, Nova Scotia, BOJlTO, Canada
D. L. Holland
Affiliation:
School of Ocean Sciences, Menai Bridge, Anglesey, Gwynedd, LL 5EH
S. D. Utting
Affiliation:
Fisheries Laboratory, Benarth Road, Conwy, Gwynedd, LL 8UB
J. East
Affiliation:
School of Ocean Sciences, Menai Bridge, Anglesey, Gwynedd, LL 5EH
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Extract

A total of 113 broods of Ostrea edulis L. larvae from a closely-controlled hatchery conditioning regime, from specific broodstock treatments, and from brooding oysters taken from a wild population in Poole Harbour, was analysed for fatty acid composition. Major differences in polyunsaturated fatty acids (PUFAs) were detected as the year proceeded, with increased levels of 20:5 (n-3) and 22:6 (n-3) from late June. Significant decreases in the PUFA content of both phospholipids and neutral lipids accompanied development from fertilized eggs to immediately pre-liberation larvae, but there was some evidence that the 20:4 (n-6) and 22:6 (n-3) content of phospholipids was protected. Fatty acid composition and content of newly liberated larvae were influenced by conditions during broodstock fattening and early gametogenesis (phospholipids) and by conditions during the later stages of oocyte development (neutral lipids).

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 71 , Issue 3 , August 1991 , pp. 691 - 705
Copyright
Copyright © Marine Biological Association of the United Kingdom 1991

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