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Steroids from aquatic organisms: V. Main sterols of the fresh water snail, Biomphalaria tenagophila
Author(s) -
Seldes Alicia M.,
Gros Eduardo G.
Publication year - 1984
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02534802
Subject(s) - freshwater snail , snail , biology , mollusca , gastropoda , biomphalaria , zoology , ecology , environmental chemistry , chemistry , schistosomiasis , schistosoma mansoni , helminths
The free sterols of the snail, Biomphalaria tenagophila , were isolated and characterized by means of gas chromatography and gas chromatography‐mass spectrometry techniques. The mixture contains the common steroids found in freshwater molluscs, principally cholesterol. The presence of cholesta‐5,7‐dien‐3β‐ol is without precedent in freshwater organisms. The occurrence of 7‐oxo‐cholesterol in freshwater snails, but not bivalves, from the same freshwater source, would indicate a difference in the physiology of such snails and bivalves.