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Table 7 Diversity estimates for the major geographic regions for each species, based on mtDNA after excluding putatively introgressed individuals, are indicated in the diagonal (in bold). Haplotype and nucleotide diversity differences between geographic regions are shown below the diagonal, while significance (p-values) are shown above the diagonal. o - L. obtusata, f - L. fabalis, USA – North America, NE – northern-central Europe, IP – Iberian Peninsula

From: Phylogeographic history of flat periwinkles, Littorina fabalis and L. obtusata

Parameter

Geographic region per species

oUSA

oNE

oIP

fNE

fIP

Haplotype diversity

oUSA

0.5686

0.0000

0.0000

0.0000

0.0000

oNE

0.3900

0.9586

0.0000

0.0000

0.0000

oIP

0.2869

−0.1032

0.8555

0.0000

0.0010

fNE

0.3250

−0.0650

0.0381

0.8936

0.0000

fIP

0.2461

−0.1439

−0.0407

−0.0788

0.8148

Nucleotide diversity

oUSA

0.0006

0.0000

0.0270

0.0000

0.1800

oNE

0.0054

0.0059

0.0000

0.0080

0.0000

oIP

0.0020

−0.0033

0.0026

0.0100

0.1870

fNE

0.0037

−0.0016

0.0017

0.0043

0.0000

fIP

0.0013

−0.0041

−0.0008

−0.0024

0.0018

  1. Significant values after Bonferrni correction (p-value = 0.005) are indicated in italic