Fig. 4
From: Linoleic acid as corpse recognition signal in a social aphid
Relative quantities of fatty acids on the body surface of dead old adults of T. styraci. (a) 0 day, (b) 1 day, and (c) 1 week after freeze-killing. The relative quantity of linoleic acid increased significantly after death, resulting in tenfold increase for the first one day (Steel’s multiple comparison test; P = 0.06) and twentyfold increase for one week after death (Steel’s multiple comparison test; P < 0.05). Sample sizes are shown in parentheses and standard errors are shown by vertical bars