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Are Rhodophyceae a dietary component for deep-sea holothurians?

Published online by Cambridge University Press:  30 September 2002

S.I. Bühring
Affiliation:
Max-Planck-Institut für Marine Mikrobiologie, Celsiusstraße 1, 28359 Bremen, Germany
R. Koppelmann
Affiliation:
Institut für Hydrobiologie und Fischereiwissenschaft, Zeiseweg 9, 22765 Hamburg, Germany
B. Christiansen
Affiliation:
Institut für Hydrobiologie und Fischereiwissenschaft, Zeiseweg 9, 22765 Hamburg, Germany
H. Weikert
Affiliation:
Institut für Hydrobiologie und Fischereiwissenschaft, Zeiseweg 9, 22765 Hamburg, Germany

Abstract

Eicosatetraenoic acid (20:4(n-6)), a polyunsaturated fatty acid (PUFA), was found in deep-sea holothurians at a depth of nearly 5000 m in the temperate north-east Atlantic. It has been suggested that deep-sea animals may be able to synthesize this compound de novo. Since this fatty acid is typical of Rhodophyceae, which has previously been found incorporated in gelatinous material captured in the deep sea, an alternative origin of this fatty acid in the deep-sea holothurians is proposed.

Type
SHORT COMMUNICATIONS
Copyright
2002 Marine Biological Association of the United Kingdom

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