Effect of exposure to single and combined agricultural agents on honeybee survival.

<p>Survival is expressed as the percentage of cumulated number of surviving bees during the monitoring period of 11 days for each treatment group with n = 180 (MMH = <i>E</i>. <i>faecalis</i> strain MMH594, FLY = <i>E</i>. <i>faecalis</i> strain FLY1). Asterisks indicate differences in the survival rate after 11 days of individuals exposed to different stressors, * ≤ 0.005, ** ≤ 0.001, *** ≤ 0.0001 (Kaplan-Meier survival analysis, log Rank test for overall comparison).