| Species | Location | n | H | Hd ± SD | π | θ | Tajima’s D statistic | Fu’s Fs statistic |
|---|
| B. globosus | Overall | 166 | 12 | 0.514 ± 0.046 | 0.002 | 0.008 | − 2.136* | − 3.604 |
| Chihuri C | 32 | 6 | 0.637 ± 0.076 | 0.003 | 0.009 | − 2.307** | 0.397 |
| Site 1 | 8 | 2 | 0.250 ± 0.180 | 0.000 | 0.001 | − 1.055 | − 0.182 |
| Site 2 | 8 | 3 | 0.464 ± 0.200 | 0.001 | 0.001 | − 1.310 | − 0.999 |
| Site 3 | 8 | 2 | 0.536 ± 0.123 | 0.001 | 0.001 | 1.167 | 0.866 |
| Site 4 | 8 | 4 | 0.786 ± 0.113 | 0.010 | 0.014 | − 1.466 | 2.726 |
| Kaziro C | 19 | 3 | 0.374 ± 0.130 | 0.001 | 0.001 | − 0.729 | − 0.671 |
| Site 7 | 7 | 1 | 0 | 0 | – | – | – |
| Site 8 | 4 | 2 | 0.500 ± 0.265 | 0.001 | 0.001 | − 0.612 | 0.172 |
| Site 9 | 8 | 3 | 0.607 ± 0.164 | 0.001 | 0.001 | − 0.448 | − 0.478 |
| Mupfure C | 98 | 10 | 0.558 ± 0.057 | 0.002 | 0.009 | − 2.202** | − 2.108 |
| Site 5 | 10 | 3 | 0.644 ± 0.101 | 0.002 | 0.002 | − 0.356 | 0.390 |
| Site 6 | 9 | 4 | 0.583 ± 0.183 | 0.001 | 0.002 | − 1.610 | − 1.283 |
| Site 10 | 8 | 3 | 0.714 ± 0.123 | 0.014 | 0.013 | 0.675 | 6.022 |
| Site 11 | 8 | 3 | 0.679 ± 0.122 | 0.001 | 0.001 | 0.069 | − 0.224 |
| Site 12 | 7 | 2 | 0.476 ± 0.171 | 0.001 | 0.001 | 0.559 | 0.589 |
| Site 13 | 8 | 4 | 0.643 ± 0.184 | 0.001 | 0.002 | − 1.448 | − 1.832 |
| Site 14 | 8 | 2 | 0.250 ± 0.180 | 0.000 | 0.001 | − 1.055 | − 0.182 |
| Site 15 | 8 | 3 | 0.607 ± 0.164 | 0.001 | 0.001 | − 0.448 | − 0.478 |
| Site 16 | 8 | 3 | 0.464 ± 0.200 | 0.001 | 0.002 | − 1.448 | − 0.305 |
| Site 17 | 8 | 2 | 0.250 ± 0.180 | 0.000 | 0.001 | − 1.055 | − 0.182 |
| Site 18 | 8 | 2 | 0.571 ± 0.094 | 0.001 | 0.001 | 1.444 | 0.966 |
| Site 19 | 8 | 2 | 0.250 ± 0.180 | 0.000 | 0.001 | − 1.055 | − 0.182 |
| Nduna C | 17 | 1 | 0 | 0 | – | – | – |
| Site 20 | 4 | 1 | 0 | 0 | – | – | – |
| Site 21 | 5 | 1 | 0 | 0 | – | – | – |
| Site 22 | 8 | 1 | 0 | 0 | – | – | – |
| B. truncatus | Overall | 16 | 3 | 0.575 ± 0.080 | 0.017 | 0.012 | 1.617 | 11.547 |
| Nyamaruru R | 1 | 1 | 0 | 0 | – | – | – |
| Mupfure R | 7 | 3 | 0.286 ± 0.196 | 0.005 | 0.007 | − 1.610* | 4.273 |
| Kamoyo S | 8 | 1 | 0 | 0 | – | – | – |
- Abbreviations: n, number of sequences, h, number of unique haplotypes per site; Hd, haplotype diversity; π, nucleotide diversity; θ, theta per site; C, Community; R, River; S, Stream; SD, standard deviation
- *P < 0.05, **P < 0.01
