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Occurrence of glyceryl tridocosahexaenoate in the eye of the sand trout Cynoscion arenarius
Author(s) -
Nicol J. A. C.,
Arnott H. J.,
Mizuno G. R.,
Ellison E. C.,
Chipault J. R.
Publication year - 1972
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/bf02533058
Subject(s) - docosahexaenoic acid , trout , lipidology , biology , fatty acid , biochemistry , chemistry , food science , fishery , polyunsaturated fatty acid , fish <actinopterygii>
The pigment epithelium of the eye of the sand trout ( Cynoscion arenarius ) contains a reflecting layer or tapetum lucidum, consisting of lipid spherules approximately 400 nm in diameter. The lipids consist amost exclusively of triglycerides and the fatty acids contain up to 95% docosahexaenoic acid. Thus the lipid of this reflecting layer appears to be nearly pure glyceryl tridocosahexaenoate. The adjacent tissues contain much less docosahexaenoic acid (retina 65%; choroid 9%) and little, if any, tridocosahexaenoin. The possible importance of this nearly pure, highly unsaturated, mono acid triglyceride is briefly discussed.