Fig. 5.

Residue concentration in different matrices (pollen, nectar, mud walls), at DAA +3 and DAA +8, from B. terrestris colonies or O. bicornis trap nests. a Thiacloprid residues. b Prochloraz residues. Treatments are shown as boxplots with median; the edges of the box indicate the 25^th and 75^th percentiles. Outliers are shown as circles. Boxplots sharing the same letter do not differ significantly at p < 0.05; n = 6 for pollen from the B. terrestris colonies, n = 3 for nectar from the bumblebee colonies, n = 7 for pollen or mud walls from the Osmia O. bicornis trap nests