Amount and Composition of Diacyl Glyceryl Ethers in Various Tissue Lipids of the Deep-sea Squid Berryteuthis magister.

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Examination was made of the amounts and compositions of diacyl glyceryl ethers (DAGE) in various tissue lipids of the deep-sea squid Berryteuthis magister. Liver specimens contained copious amounts of lipids (56.9%) which were composed almost entirely of triacylglycerols (TG: 53.1%) and DAGE (32.4%). Ovary samples contained substantial amounts of lipids (13.9%) with considerable DAGE (8.1%). Mantle, integument and testis samples contained small amounts of lipids (1.0, 1.1 and 1.5%, respectively) with lower DAGE content (0.1%, 0.1% and trace, respectively). In liver and mantle, glyceryl ethers originating in DAGE had essentially the same alkyl chains, whose most predominant component was 16:0 (70.2% and 69.9%) alcohol followed by 18:0 (7.1% and 6.3%), 18:1n-9 (7.4% and 5.9%) and 18:1n-7 (4.5% and 4.6%) alcohols, respectively. Component glyceryl ethers in ovary were characteristically rich in monoenes (52.9%) with 18:1n-9 (24.6%), 20:1n-9 (15.5%) and 18:1n-7 (10.2%) alcohols. Fatty acid compositions of DAGE, TG and phospholipid classes in various tissue lipids of this squid species are discussed.<br>

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