Table 1 Genetic variation at the 11 microsatellites and mtDNA control region loci for each distinct population inferred from the STRUCTURE analysis.

From: Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean

 

Total

PY

TL

XCSS

Admix

Microsatellite loci

 N Mic. ± SD (max)

148

57.2 ± 0.32 (58)

16.0 ± 0.4 (17)

16.4 ± 0.36 (17)

48.1 ± 1.3 (53)

 NA

1.4%

4.8%

3.7%

9.3%

 A r  ± SE

4.82 ± 0.40

5.19 ± 0.52

5.25 ± 0.46

5.93 ± 0.45

 pA ± SE

0.38 ± 0.09

0.55 ± 0.21

0.48 ± 0.12

0.69 ± 0.18

 H o  ± SD

0.60 ± 0.06

0.70 ± 0.047

0.69 ± 0.05

0.72 ± 0.04

 H e  ± SD

0.62 ± 0.05

0.62 ± 0.05

0.63 ± 0.04

0.68 ± 0.03

 F IS  ± SD

0.041 ± 0.03 ns

−0.123 ± 0.06 ns

−0.112 ± 0.03 ns

−0.057 ± 0.03 ns

 M GW

0.51***

0.46**

0.44**

0.53**

MtDNA control region

 N mtDNA

129

56

17

16

37

 S

7

2

1

0

5

 Singleton

4

0

0

0

3

 Shared P.

3

2

1

0

2

 #hap.

7

3

2

1

5

 Hd

0.57

0.53

0.22

0

0.62

 π (per site, %)

0.112

0.096

0.037

0

0.150

 θ W (per site, %)

0.216

0.073

0.050

0

0.201

 D

−1.08 ns

0.54 ns

−0.49 ns

0

−0.64 ns

  1. N Mic., microsatellite average sample size (max); NA: average proportion of missing data per locus, A r : allelic richness (estimated for a sample size of 26 individuals); pA: Private allelic richness (estimated for a sample size of 3 individuals); Ho and He: observed and expected heterozygosity; F IS : Inbreeding coefficient; M GW , M of Garza and Williamson34; N mtDNA , MtDNA sample size; S, number of segregating sites; Singleton: rare mutation observed only in one sequence among all; Share P., shared polymorphism (mutation observed in at least two or more sequences) also known as parsimony informative site; # hap, number of haplotypes; Hd, haplotype diversity; π, nucleotide diversity; θ W , theta from S or Theta-Watterson; D, Tajima’s D. The significance level of the M GW statistic was evaluated in DIYABC78 using 1 × 106 coalescent simulations under a scenario of constant effective population size. The P-value indicate the proportion of simulations which provide a value below the observed one. The significance of D values was estimated using 10 000 coalescent simulations in DNAsp73.
  2. ns: not significant (p-value > 0.05); *p-value ≤ 0.05; **p-value ≤ 0.01; ***p-value ≤ 0.001.