Lipid class composition of benthic-pelagic fishes (Cottocomephorus, Cottoidei) from Lake Baikal

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Abstract

A study was made of the lipid class composition in liver, gonads and red and white muscles of two endemic Baikal fish species Cottocomephorus grewingki and Cottocomephorus inermis. The main lipid classes were triacylglycerols and phospholipids. The highest levels of triacylglycerol (81.8%) were found in the liver of C. inermis males, and of phospholipid (38.3%) – in males testes of both species. The main phospholipid classes were phosphatidylcholine and phosphatidylethanolamine, which varied in examined organs and tissues in both fish species from 44.3 to 78.7%, and from 16.8 to 42.1%, respectively.

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