Table 3. Statistical results for incubation experiments.

	House			Gut
Bead size	t-statistic	df	p-value	t-statistic	df	p-value
0.3	2.4725	6	0.0483*	-1.1696	3	0.327
0.3 x 0.7	-0.72759	6	0.494	-1.3777	3	0.262
1	-11.179	6	<0.001**	1.1402	3	0.337
0.5	3.4275	9	0.00754*	-3.6531	6	0.0107*
0.5 x 1.4	-0.047972	9	0.963	-5.385	6	0.002**
1.75	-5.1398	9	<0.001**	5.2286	6	0.002**
3	-0.19261	8	0.852	0.001788	5	0.999
2.4 x 6.4	-7.8573	8	<0.001**	-1.0277	5	0.351
10	2.9004	8	0.0199*	-2.4019	5	0.0615

Statistical comparisons are from T-Tests on the selectivity coefficient α_i values versus the null hypothesis of no selection $\left({\alpha }_i=\frac{1}{k}\right)$.

*p ≤ 0.05

**p ≤ 0.0028 (Bonnferoni correction).