To decipher the degree to which S. dumicola personality Obeticholic Acid state dependent, we ran multiple regressions with prosoma width, body mass and body condition as independent variables, and boldness as our response variable. For all of our analyses we designated experimental colony ID and source colony ID as random effects in our models. Post hoc pairwise comparisons were conducted with Tukey's HSD. All statistics were performed in JMP 10.
Regardless of the laboratory/field distinction, we detected strong associations between group size and individuals' tendency to participate in all aspects of foraging (Fig. 1, Table 1, Supplementary Table S1). Individuals' probability of being the first to emerge in response to prey, the first to attack prey, or the first to participate in an electron acceptor attack were 200–300% greater in smaller colonies than in larger colonies (laboratory: F1,99.72 = 51.18, ß ± SE = 0.04 ± 0.01, P < 0.0001; field: F1,36.3= 18.67, ß ± SE = 0.06 ± 0.01, P = 0.0001). Larger colonies were three times as large as smaller colonies.