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Biosynthesis and Composition of Sterols in Annelida - I. Investigations On Some Polychaetes

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image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

1. The incorporation of radioactivity from acetate 1-14C into some classes of lipids is studied in the polychaetous annelids Nereis diversicolor, Nephthys hombergii and Spirographis spallanzani. 2. It is shown that these animals are able to synthesize from the acetate injected fatty acids and unsaponifiable lipids, including squalene and sterols. 3. It is supposed that the capacity of synthesizing sterols may be a common property of Polychaeta. 4. The sterols of Nereis diversicolor, Nephthys hombergii, Aphrodite aculeata and Spirographis spallanzani were analysed by means of gas-liquid chromatography. 5. Sterol composition of Nereis, Nephthys and Aphrodite showed close resemblance, whereas that of Spirographis differed considerably. In all cases cholesterol was the main sterol.

Affiliations: 1: Laboratory of Chemical Animal Physiology, Utrecht, The Netherlands


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