Table 1.

Results from simulated prey capture events in the field repeated 10 times in each of 18 spider colonies for the three binary response variables. The unequal participation row shows the combined p-values from simulation tests within each colony, testing whether individual spiders participate unequally in prey capture reflecting task differentiation. The bottom five rows show the test values obtained from GLMMs describing the effect of five predictor variables on each of the three response variables. Significant p-values are shown in italics.

	first spider to emerge			first spider to attack			out at time of attack
unequal participation	combined p-value		0.25	combined p-value		0.022	combined p-value		< 0.001
test values	χ2	d.f.	p	χ2	d.f.	p	χ2	d.f.	p
boldness	8.85	6,5	0.0029	11.2	6,5	0.00082	16.2	7,6	<0.0001
aggression	0.13	8,7	0.72	0.21	8,7	0.65	0.03	8,7	0.86
dispersal distance	3.48	7,6	0.062	16.1	6,5	<0.0001	10.8	7,6	0.0010
prosoma width	3.90	6,5	0.048	1.56	7,6	0.21	5.20	7,6	0.023
developmental stagea	0.0011	6,5	0.97	0.055	7,6	0.81	0.32	7,6	0.57

^aAdditional tests: these models do not include prosoma width as a predictor and only include the predictors that were significant in the main models.