Table 3

Neutrality and mismatch distribution tests for population expansions within Heterandria formosa
Group N FS R2 r τ Expansion time (ka)
WCP region 8
    0.288**
0.201** 0.240 ns 1.195 [0.000, 10.393] 24.5 [0.0, 213.4]
ACP region 9
    0.241
0.178** 0.169 ns 1.498 [0.000, 3.119] 30.8 [0.0, 64.0]
SAMOVA group1 10
    0.218
0.169** 0.061 ns 1.672 [0.000, 9.023] 34.3 [0.0, 185.3]
SAMOVA group 2 115
    -0.267
0.090** 0.058 ns 2.408 [1.256, 3.031] 49.4 [25.8, 62.2]
SAMOVA group 3 51
    -0.053
0.108** 0.095 ns 0.992 [0.492, 1.615] 20.4 [10.1, 33.2]
SAMOVA group 4 23
    0.081
0.133** 0.482 ns 3.000 [0.410, 3.172] 61.6 [8.4, 65.1]

Sample sizes and coalescent simulation results for Fu’s FS, R2, Harpending’s raggedness index (r), and mutation time parameter τ calculated from a sudden-expansion demographic model. Multiple tests supported population expansions for each group of populations (boldface); one test supported a population bottleneck (underlined). Population expansion dates (thousands of years ago, ka) were estimated from τ using a per-locus mutation rate (μ = 8.12 × 10-6) converted from the BEAST cytb estimate. Regional results are only presented for regions with no SAMOVA-inferred subdivision. Brackets contain 95% confidence intervals; ns, not significant; **P < 0.0001 (P < 0.02 for Fu’s FS).

Bagley et al.

Bagley et al. BMC Evolutionary Biology 2013 13:223   doi:10.1186/1471-2148-13-223

Open Data