Fig. 2. Molar percentages of GABamide (GAB), free glycine (Gly) and free alanine (Ala) in water extracts of webs built by (A) feeding and (B) starving/resumed feeding groups. In this and Figs 3, 4, a data point representing horizontally pooled web collections, e.g. web collections 14–19, was assigned an x-coordinate midway in this range, i.e. web collection 16.5 (see Materials and methods for explanation of `horizontal pooling' and supplementary material Table S1). Note the very different molar percentage ranges for different compounds. Purple diamonds, juvenile male Araneus cavaticus; green triangles, juvenile female A. cavaticus; red circles, adult female A. cavaticus; blue squares, adult female Argiope aurantia; open circles, adult female Argiope trifasciata.