Figure 2
From: Metabolomics of aging assessed in individual parasitoid wasps
Representative total ion chromatograph of whole wasp extract in.
(a) ESI- and (b) ES+ mode. Labels represent visible stability ions and major lipid categories (C–E) Representative mass spectra labelled for (c) fatty acid (d) lysophospholipid (e) phospholipid and (f) triacylglyceride key ions. PE = phosphoethanolamine, TG = triacylglyceride. The unusual appearance of lysophospholipids alongside fatty acids in ESI- mode was found to be due to in source fragmentation of ES + lysophospholipids. These peaks matched the retention time and corresponded to major LC-MS/MS fragments of the corresponding lysophospholipid seen in ESI+. These ions were absent from chromatograms acquired during Velos LC-MS/MS analysis.
