Strong genetic differentiation among east Atlantic populations of the sword razor shell (Ensis siliqua) assessed with mtDNA and RAPD markers

Table 5 AMOVA analysis, based on (a) PCR–RFLPs of part of the 16S rRNA gene and (b) RAPD data for Ensis siliqua

Source of variation	d f	Sum of squares	Variance components	Percentage of variation	P-value
(a)
Among groups	1	61.725	0.398	80.39	<0.001
Among localities within groups	7	2.953	0.010	2.00	<0.001
Within localities	305	26.596	0.087	17.61	0.008
Total	313	91.274	0.495
(b)
Among groups	1	315.555	2.083	14.08	0.001
Among localities within groups	7	480.992	2.182	14.75	0.001
Within localities	233	2453.065	10.528	71.17	0.001
Total	241	3249.612	14.793

Two groups were considered, one composed by the Iberian localities but Aveiro and other by the remaining samples
(a) mtDNA, F _SC = 0.102, F _ST = 0.824, F _CT = 0.804 (b) RAPDs F _SC = 0.141, F _ST = 0.172, F _CT = 0.288

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