Table 2.

The Sensitivity Ratio (SR) and comparison across castes and sexes of B. terrestris and O. bicornis upon acute exposure to sulfoxaflor (oral and contact) and Amistar (oral).

Sex/caste	Timepoint (h)	SR µg/bee (CI)	SR ng/g (CI)
Sulfoxaflor LD50 Bombus terrestris ssp. terrestris contact
Worker/queen	48/96	0.17 (0.11, 0.23)	0.56 (0.36, 0.75)
Worker/male	48/72	10.54 (6.06, 15.02)	14.68 (8.47, 20.89)
Male/queen	72/96	0.02 (0.01, 0.02)	0.04 (0.02, 0.05)
Sulfoxaflor LD50 Bombus terrestris ssp. audax oral
Worker/queen	48/96	0.28 (0.23, 0.33)	0.83 (0.68, 0.98)
Worker/male	48/48	1.57 (1.28, 1.87)	1.73 (1.42, 2.04)
Male/queen	48/96	0.18 (0.13, 0.22)	0.48 (0.36, 0.6)
Amistar LD50 Bombus terrestris ssp. audax oral
Worker/queen	96/96	0.41 (0.28, 0.53)	1.25 (0.86, 1.63)
Worker/male	96/72	1.6 (1.16, 2.04)	1.9 (1.39, 2.41)
Male/queen	72/96	0.25 (0.18, 0.33)	0.66 (0.46, 0.85)
Sulfoxaflor LD50 Osmia bicornis contact
Female/male	96/96	1.73 (0.79, 2.67)	0.83 (0.39, 1.28)
Sulfoxaflor LD50 Osmia bicornis oral
Female/male	48/48	1.28 (0.63, 1.94)	0.67 (0.32, 1.01)
Amistar LD50 Osmia bicornis oral
Female/male	48/48	1.42 (0.61, 2.23)	0.78 (0.33, 1.22)
Sulfoxaflor LD50 Osmia bicornis/Bombus terrestris ssp. audax oral
Female/worker	48/48	0.10 (0.06, 0.14)	0.23 (0.13, 0.33)
Male/male	48/48	0.12 (0.08, 0.16)	0.6 (0.39, 0.80)
Sulfoxaflor LD50 Osmia bicornis/Bombus terrestris ssp. terrestris contact
Female/worker	96/48	0.008 (0.004, 0.012)	0.02 (0.01, 0.03)
Male/male	48/72	0.05 (0.02, 0.07)	0.37 (0.18, 0.56)
Amistar LD50 Osmia bicornis/Bombus terrestris ssp. audax oral
Female/worker	48/96	2.29 (1.18, 3.40)	5.02 (2.57, 7.46)
Male/male	48/72	2.59 (1.52, 3.65)	12.23 (7.32, 17.14)

SRs and related 95% confidence intervals were calculated using data reported in Fig. 1. Timepoints correspond to the steady-state mortality (less than 10% increase across 24 h) except in the case of O. bicornis oral exposure to sulfoxaflor and Amistar.