Table 4.

Partitioning of genetic variation with hierarchical F‐statistics in Ruditapes decussatus

Marker type	Subdivision levelsa	F‐statistics			% of variation			Standardized F‐statistics
		F ST	F SC	F CT	Among groups	Among populations (within groups)	Within Populations	F ST’	F SC’	F CT’
Introns	2	0.186d	0.033d	0.158	15.8	2.8	81.4	0.277	0.114	0.231
	3	0.051d	−0.018	0.068b	6.8	−1.6	94.9	0.127	0.032	0.115
	4	0.092d	−0.018	0.108c	10.8	−1.6	90.8	0.181	0.033	0.168
Microsatellites	2	0.057d	0.013d	0.044d	4.4	1.2	94.3	0.153	0.040	0.141
	3	0.018d	0.002b	0.015d	1.5	0.2	98.2	0.045	0.008	0.043
	4	0.035d	0.004d	0.031d	3.1	0.4	96.5	0.096	0.015	0.090

^aTwo levels: Atlantic versus Mediterranean Sea. Three levels: Cantabrian versus Rías Baixas versus Gulf of Cadiz. Four levels: Cantabrian Sea versus Rías Baixas versus Gulf of Cadiz versus Mediterranean Sea.

^b P < 0.05.

^c P < 0.01.

^d P < 0.001.