Table 2 Estimated divergence times and migration rates between beach/inland habitats at the for localities.

From: Life on a beach leads to phenotypic divergence despite gene flow for an island lizard

 

Ancient period

Recent period

  

Migration rates

 

Migration rates

Locality

Time

Beach->Inland

Inland->Beach

Time

Beach->Inland

Inland->Beach

1

175012

(27791, 641032)

<1 × 10−6

(<1 × 10−6, 8.37 × 10−4)

3.58 × 10−5

(9.12 × 10−6, 5.11 × 10−5)

1046

(1245, 2069)

9.81 × 10−4

(<1 × 10−6, 3.13 × 10−3)

1.07 × 10−3

(4.26 × 10−4, 4.52 × 10−3)

2

246721

(43310, 738041)

<1 × 10−6

(<1 × 10−6, 5.99 × 10−4)

2.55 × 10−5

(<1 × 10−6, 2.29 × 10−3)

1915

(192, 3502)

6.47 × 10−4

(<1 × 10−6, 2.29 × 10−3)

7.26 × 10−4

(3.48 × 10−4, 3.36 × 10−3)

3

797338

(104552, 854471)

<1 × 10−6

(<1 × 10−6, <1 × 10−6)

<1 × 10−6

(<1 × 10−6, <1 × 10−6)

537

(320, 595)

2.34 × 10−4

(2.28 × 10−4, 5.37 × 10−4)

1.64 × 10−2

(1.10 ×10−2, 3.23 ×10−2)

4

1709064

(17383, 21810456)

<1 × 10−6

(<1 × 10−6, 8.32 × 10−4)

5.32 × 10−5

(<1 × 10−6, 1.08 × 10−4)

1095

(107, 1797)

9.08 × 10−4

(4.80 × 10−4, 6.40 × 10−3)

1.01 × 10−3

(<1 × 10−6, 3.92 × 10−3)

  1. Fastsimcoal2 parameter estimates and corresponding bootstrap values for the model allowing two periods of gene flow for the ALLSNP dataset. Under the favoured model (see Table 1), early divergence was proceeded by lower beach-inland migration rates (i.e., during the “Ancient period”). This was followed by a “Recent period” of relatively higher migration rates. Each of these periods was estimated to have begun at a specific Time (estimates in generations before present) while Beach->Inland and Inland->Beach migration rates represent the estimated probabilities of a lineage within one of these habitats moving to the other habitat, per generation, going forwards in time. The 95% bootstrap confidence intervals for all estimates are given in parentheses. Sample sizes for localities 1–4 were: 17, 17, 20, and 17, respectively.
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