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. 2014 Dec 22;281(1797):20141868. doi: 10.1098/rspb.2014.1868

Figure 2.

Figure 2.

Brain transcriptomic analyses of 16 neurotransmitter-related genes in food scouting and nest scouting. (a) Expression ratio shows genes in five neurotransmitter systems are differentially expressed in both scouting behaviours (dopamine, glutamate, GABA, acetylcholine and octopamine systems). Yellow bars, expression ratios of nest scouts divided by nest recruits (NS/NR); blue bars, expression ratios of food scouts divided by food recruits (FS/FR). Asterisk (*) denotes FDR < 0.05 and contrast p < 0.005. Gene information: see electronic supplementary material, table S1. (b,c) Linear discriminant analysis using the expression profiles showed in (a) display a clear separation of scouts and recruits in 60 individual bees, plotted by food scouting (LD1 and LD2 accounted for 75.2% of the variation) and nest scouting (LD1 and LD2 accounted for 90.5% of the variation), respectively. FS, food scouts (red); FR, food recruits (blue); NS, nest scouts (red); NR, nest recruits (blue), with different colonies denoted as subscript 1, 2 and 3.