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. 2019 Apr 10;286(1900):20190433. doi: 10.1098/rspb.2019.0433

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© 2019 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — The LD₅₀ (48 h) of bees exposed to FPF (a) and FPF + PRO (b) across worker types (in-hive bees versus foragers) in summer. Above each bar, we show the LD₅₀ values. Different letters indicate significant differences. We show the 24 h LD₅₀ of foragers (light grey bars), because high summer forager mortality at 48 h prevented the accurate estimation of their 48 h LD₅₀ (standard LD₅₀ estimation time, dark grey bars). Error bars represent 95% confidence intervals (n_overall = 1080). The LD₅₀ of FPF across season and worker type is reported in electronic supplementary material, figure S1.