Fig. 3
From: Linoleic acid as corpse recognition signal in a social aphid
Relative quantities of fatty acids on the body surface of T. styraci. (a) Live old adults. (b) Live old soldiers. (c) Dead old adults 3 to 7 days after freeze-killing. (d). Dead old soldiers 3 days or longer after freeze-killing. Statistically significant differences were detected in linoleic acid proportion between the live and dead adults (Wilcoxon rank-sum test; P < 0.05) and between the live and dead soldiers (Wilcoxon rank-sum test; P < 0.005). Sample sizes are shown in parentheses and standard errors are shown by vertical bars