Table 5.

Analysis of molecular variance of six populations of Oncomelania quadrasi classified into three groups defined by island, i.e., groups of Luzon, Mindoro, and Leyte islands, the Philippines^*

Source of variation	df	Sum of squares	Variance components	% Variation	Fixation indices
Among groups	2	40.057	0.75	46.60	FCT = 0.466†
Among populations within group	3	19.012	0.62	38.83	FSC = 0.727‡
Within population	53	12.422	0.23	14.57

^*Level of significance is based on 1,000 permutations. df = degrees of freedom.

^†P < 0.05.

^‡P < 0.001.