Table 2.

HKA test of positive selection

Speciesa	Sum of deviationsb	Dfc	P-valued	P-valuee
A.s.	28.8754	7	0.00015	0.00000
A.p.	17.4805	7	0.01455	0.00310
A.d.	24.4626	7	0.00094	0.00000

^a A. scirpaceus (A.s.), A. palustris (A.p.), A. dumetorum (A.d.)

^bCounted according to the formula ∑ (observed - expected)²/variance)

^cDegree of freedom

^dProbability from chi-square distribution (significant values are indicated in bold)

^eProbability from simulations (no. of simulation 10 000; significant values are indicated in bold)