Abstract
Abstract The fatty acid compositions of phospholipid and triacylglycerol fractions of total lipids prepared from eggs, nymphs, new-generation, aestivating, and diapausing adults of the wheat stink bug Aelia rostrata Boheman (Heteroptera: Pentatomidae) were analyzed by gas chromatography-mass spectrometry. The major components were C16 and C18 saturated and unsaturated fatty acid ubiquitous to most animal species. In addition to these components, several odd-chain (C13:0, C15:0, and C17:0) and prostaglandin-precursor fatty acids were found. The fatty acid profiles of phospholipids and triacyglycerols were substantially different. Generally, the phospholipids were higher than triacyglycerols in polyunsaturated fatty acids. The unsaturation/saturation ratio for phospholipid was higher than calculated for triacylglycerol. There were substantial differences in fatty acid compositions from different development stages. In phospholipid fractions, the fatty acid profiles from eggs and nymph were not the same, wit...
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