Table 2 Hierarchical analysis of molecular variance for Ciona robusta and C. intestinalis.

From: Contrasting global genetic patterns in two biologically similar, widespread and invasive Ciona species (Tunicata, Ascidiacea)

 

Fixation index

COX3-ND1 dataset

Concatenated dataset

C. robusta

Groups

NWP, NEP, SEP, EC and MedS

NWP, SEP, EC and MedS

ϕCT

0.497

(P < 0.001)

0.504

(P < 0.001)

ϕSC

0.083

(P < 0.001)

0.005

(P = 0.084)

ϕST

0.539

(P < 0.001)

0.507

(P < 0.001)

C. intestinalis

Groups

NWA, EC and NS

EC and NS

ϕCT

0.154

(P < 0.001)

0.125

(P < 0.001)

ϕSC

0.035

(P < 0.001)

0.071

(P < 0.001)

ϕST

0.140

(P < 0.001)

0.147

(P < 0.001)

  1. Analyses were done using the COX3-ND1 dataset and the concatenated mtDNA dataset. ϕCT, ϕSC and ϕST refer to the fixation index measuring genetic differences among areas, among populations within areas and among all populations, respectively. Probability values (H0: ϕ = 0) are indicated in brackets.
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