Table 4.
Analysis of molecular variance (AMOVA) averaged over 10 loci, using the five populations grouped into either three or four clusters. Df refers to degrees of freedom, while SS refers to sum of squares.
| Source of variation | df | SS | % variation | F-statistic | P-value |
|---|---|---|---|---|---|
| Three clusters1 | |||||
| Among clusters | 2 | 8.15 | 0.93 | 0.0093 | 0.1020 |
| Among populations within clusters | 2 | 5.34 | 0.96 | 0.0097 | 0.0112 |
| Within populations | 371 | 565.56 | 98.11 | 0.0189 | <0.0001 |
| Four clusters2 | |||||
| Among clusters | 3 | 12.20 | 2.01 | 0.0180 | 0.0064 |
| Among populations within clusters | 1 | 1.30 | −0.20 | −0.0021 | 0.6016 |
| Within populations | 371 | 565.56 | 98.20 | 0.0201 | <0.0001 |
Clusters: 1) Penobscot Bay, 2) Frenchman Bay, Englishman Bay, and Starboard Cove, and 3) Cobscook Bay
Clusters: 1) Penobscot Bay, 2) Frenchman Bay, 3) Englishman Bay and Starboard Cove, and 4) Cobscook Bay
Bold indicates significance at the α = 0.05 level.