Temporal genetic structure in a poecilogonous polychaete: the interplay of developmental mode and environmental stochasticity

Table 3 AMOVA results of spatial and temporal variation in Pygospio elegans

Temporal groups (samples grouped by year)
Source of variation	Sum of squares	Variance components	Percentage of variation	Fixation indices (P-value)
Among years	22.3	−0.006	−0.27	F_CT = −0.003 (0.816)
Among populations within years	132.2	0.085	3.61	F_SC = 0.036 (<0.001)
Within samples	3436.3	2.273	96.66	F_ST = 0.033 (<0.001)
Total	3590.8	2.351
Geographical groups (samples grouped by population)
Source of variation	Sum of squares	Variance components	Percentage of variation	Fixation indices (P-value)
Among populations	110.9	0.067	2.85	F_CT = 0.029 (<0.001)
Among temporal samples within populations	43.6	0.020	0.85	F_SC = 0.009 (<0.001)
Within samples	3436.3	2.273	96.3	F_ST = 0.037 (<0.001)
Total	3590.8	2.360

Temporal groups consist of samples from different populations grouped by sampling year (4 groups: 2008, 2009, 2010, 2011) and spatial groups consist of temporal samples grouped according to population (7 groups).

ISSN: 2730-7182