almost significantp = 0.053
We found a significant effect of the treatments on the compounds forming the first principal component (PC1) of uropygial gland secretions (Table 3 b; Figure 3 a), with an almost significant difference between TSB and control treatments (0.32 ± 0.15; F 1,17 = 4.33; p = 0.053), but not between Nisin and control (0.04 ± 0.13; F 1,19 = 0.08; p = 0.77).