Abstract
Lipid and phospholipid compositions of endemic gammarids, belonging to the subphylum Crustacea Issycogammarus bergi was studied. The fatty acid composition of total lipids, neutral, glyco- and phospholipid fractions were investigated by capillary gas chromatography-mass spectrometry. Ninety-four fatty acids were identified: 26 saturated (both iso-, anteiso- and cyclo-), 31 monoenoic, 11 dienoic, and 26 polyenoic (including 10 trienoic, eight tetraenoic, six pentaenoic and two hexaenoic). Among polyenoic fatty acids high percentages of three main acids 18:3n-6, 18:3n-3 and 20:4n-6 in phospholipid and glycolipid fractions were identified; high percentages of 16:3n-6 and 16:4n-1 among total lipids were also identified. A number of unusual polyunsaturated fatty acids, such as c-9-17:0, c-9-19:0, 24:4n-6, 24:5n-6 and 24:6n-3 acids, were found.
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