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Fatty-acid synthesis in the echinoderms: Asterias rubens, Echinus esculentus and Holothuria forskali

Published online by Cambridge University Press:  11 May 2009

W. V. Allen
Affiliation:
Biological Sciences, Humboldt State College, Arcata, California

Extract

The fatty-acid compositions of tissue lipids of Asterias rubens L., Echinus esculentus L. and Holothuria forskali Delia Chiaje were determined by means of gas-liquid chromatography. Considerable proportions of branched-chain, normal odd-numbered and eicosatetraenoic acids occur in the latter two animals. Tissues of all three animals were incubated with 1−14C-acetate. The relative specific activities of fatty-acid fractions isolated by thin-layer chromatography upon AgNO3-impregnated silica gel G fell in the order: saturates > monoenes — dienes > polyenes. The fatty-acid compositions of the alkoxydiglyceride, triglyceride and phospholipid classes of A. rubens hepatic caecal lipid were also determined.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1968

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