Table 4. Results of linear regressions testing for a relationship between the number of domatia a plant has and the number of queens counted in that a plant.

Ant species	Host plant	df	SS	SS	F value	P value		R2	Regression equation
			(regression)	(residual)
Crematogaster laevis	Maieta guianensis	1,10	18.43	2.57	71.651	<0.0001	0.88
Pheidole minutula	Maieta guianensis	1,35	228.54	40.46	197.72	<0.0001	0.85
Azteca sp.	Tococa bullifera	1,8	30.91	3.09	80.09	<0.0001	0.91
Crematogaster laevis	Tococa bullifera	1,8	120.26	94.72	10.16	0.013	0.56

Note that the intercept of all three regressions is zero because queens are only found in plants with at least one domatium.