Fatty acid and sterol composition of the antarctic amphipod Themisto gaudichaudii guerin 1828

Abstract

1. 1. A number of 56 different fatty acids and 7 sterols was found and identified in Themisto gaudichaudii. 2. 2. 20:5( n−3), 22:6( n−3), 16:0, 18:1( n−9), 16:1( n−7) and 18:1( n−7) were the dominating fatty acids in total lipids, phospholipids and triacylglycerols. 3. 3. T. gaudichaudii contains an extremely high content of 20:5( n−3) (21.1%) and 22:6( n−3) (15.9%) in total fatty acids. 4. 4. The sterol fraction contained cholesterol, desmosterol and 22-dehydrocholesterol as main components.