Table 1.
Summary statistics of genetic diversity per population using 8,072 SNPs and infection parameters per lake. N P. fallax: sample size of parasites, N SNPs: number of SNPs retained per lake, CIs: confidence intervals, Mean Intensity ± S.E.: a measure of population census size indicating the average number of P. fallax specimens and standard error per infected fish, Prevalence of infection: percentage of fish infected from all whitefish examined at each lake, also a measure of population census size.
| Perialpine lakes | Subarctic lakes | |||||
|---|---|---|---|---|---|---|
| Bienne | Brienz | Thun | Walen | Langfjordvatn | Suohpatjávri | |
| N P. fallax | 33 | 93 | 110 | 60 | 105 | 113 |
| N SNPs | 34,843 | 4,758 | 33,488 | 10,152 | 12,375 | 11,611 |
| Allelic richness (Ar) | 1.34 | 1.54 | 1.63 | 1.44 | 1.28 | 1.11 |
| Genetic diversity (Hs) | 0.15 | 0.16 | 0.16 | 0.16 | 0.15 | 0.11 |
| Observed heterozygosity (Ho) | 0.07 | 0.06 | 0.09 | 0.05 | 0.05 | 0.04 |
| Inbreeding coefficient (Fis) | 0.56 | 0.62 | 0.46 | 0.65 | 0.66 | 0.63 |
| Effective Population size (Ne) | 910 | 1,932 | 627 | 450 | 1,253 | 1,170 |
| 95% CIs | 692−1,329 | 780−inf | 600−657 | 352−622 | 954−1,821 | 862–1,814 |
| Mean intensity ± SE | 234 ± 52 | 93 ± 10 | 68 ± 8 | 52 ± 7 | 20 ± 4 | 68 ± 10 |
| Intensity of infection (range) | 3−1,000 | 1 − 749 | 1 − 520 | 1−300 | 1−255 | 1–429 |
| Prevalence of infection (%) | 91 | 99 | 92 | 98 | 86 | 93 |