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Table 3 AMOVA results comparing genetic variation in 25 T. urticae populations collected from 21 localities

From: Microsatellites reveal a strong subdivision of genetic structure in Chinese populations of the mite Tetranychus urticae Koch (Acari: Tetranychidae)

Source of variation

d.f

Sum of squares

Variance components

Percentage of variation

Fixation indicies

Among 5 clusters inferred by STRUCTURE

4

1982.124

1.08782 Va

31.92

FCT = 0.31923 (P < 0.0001)

Among population within clusters

20

1310.289

0.75935 Vb

22.28

FSC = 0.32733 (P < 0.0001)

Within populations

2085

3253.593

1.56046 Vc

45.79

FST = 0.54207 (P < 0.0001)

Among groups with different host plants

4

923.664

0.28920 Va

8.94

FCT = 0.08941 (P = 0.00587)

Among populations within groups

20

2368.748

1.38490 Vb

42.82

FSC = 0.47019 (P < 0.0001)

Within populations

2085

3253.593

1.56048 Vc

48.24

FST = 0.51756 (P < 0.0001)

Among groups with different color pattern of mites

1

746.419

0.75113 Va

20.84

FCT = 0.20837 (P < 0.0001)

Among populations within groups

23

2545.994

1.29314 Vb

35.87

FSC = 0.45316 (P < 0.0001)

Within populations

2085

3253.93

1.056048 Vc

43.29

FST = 0.567116 (P < 0.0001)