Extended Data Table 1.

Results from the colony level experiment, including means and standard errors per treatment, and summaries of models run. Significant differences (p≤0.05) are highlighted in bold.

Colony level	Mean ± SE	Model summary
Activity	control	2.4ppb	10ppb		df	p
No. of bee visits returning with pollen	7.13 ± 4.28	3.57 ± 3.41	1.5 ± 1.13	χ2=9.65	2	0.008	glmmPQL
Fruit set
End no. of fruit	3.44 ± 0.99	3 ± 0.85	2.25 ± 0.60	χ2=4.1	2	0.13	glmer
Proportion of trees producing apples	0.69	0.69	0.81	χ2=1.2	2	0.55	glmer