Chemical similarities of silverfish to the average chemical worker profile (N
= 19; left) and host aggression toward the same individuals (right) in colony 7. Differences between isolated and non-isolated silverfish were evaluated by PERMANOVA (**P < 0.01, ***P < 0.001). Median (red cross = mean), quartiles (boxes), 10th and 90th percentiles (whiskers), and outliers (black square = outlier; asterisk = extreme point) are shown. Abbreviations: No iso = no isolation, d iso = days isolated.