Fig. 8
From: Linoleic acid as corpse recognition signal in a social aphid
Origin of linoleic acid on the body surface of T. styraci. (a) Relative quantities of linoleic acid on the body surface of dead old adults with or without heating by microwave after freeze-killing. Asterisks indicate statistically significant differences (P < 0.05) as compared with the control group (Wilcoxon rank-sum tests: *, P < 0.05; ns, not significant). (b) Relative quantities of fatty acids released by hydrolysis of glycerides extracted from live old adults. (c) Relative quantities of fatty acids released by hydrolysis of phospholipids extracted from live old adults. Sample sizes are shown in parentheses and standard errors are shown by vertical bars