Table 4.

Overlaps between pheromone- and foraging-related genes, separated by foraging preference

	Pheromone genes	Pollen Upregulated	Nectar Upregulated	Overlap Pollen	Overlap Nectar
BP vs Control	58	79	246	1	40*
EBO vs Control	152	79	246	0	71*

Because foraging preference was a binary trait in the generalized linear model (i.e. either pollen or nectar), DEGs that were up-regulated in nectar foragers were by definition down-regulated in pollen foragers, and vice versa. Foraging-related DEGs were upregulated in pollen foragers (and downregulated in nectar foragers) when log fold change was greater than 0 and upregulated in nectar foragers (and downregulated in pollen foragers) when log fold change was less than zero. There was a significant overlap between pheromone-related genes and genes that were upregulated in nectar foragers

*significantly greater overlap of genes than expected by chance; P<0.001; hypergeometric test