Table 2.
Descriptive statistics of 26 STR loci for 4 desert tortoise populations: Eastern Mojave RU (G. agassizii), Colorado Desert RU (G. agassizii), Arizona G. agassizii, and Arizona G. morafkai with all probable hybrid individuals removed from the dataset. n - number of individuals genotyped; % pairwise linkage - linkage disequilibrium (nonrandom association between loci) calculated among all pairs of loci within each population (Slatkin and Excoffier 1996); theta(H) population parameter where θ - 4Neμ for diploids (Ohta and Kimura 1973); Hobs - observed heterozygosity; Hexp - expected heterozygosity; SD - standard deviation of randomization tests for Hardy–Weinberg equilibrium; and FIS - inbreeding coefficient (Weir and Cockerham 1984)
| Eastern Mojave RU | Colorado Desert RU | G. agassizii (AZ) | G. morafkai (AZ) | Total | |
|---|---|---|---|---|---|
| n | 58 | 45 | 32 | 80 | 214 |
| Theta(H) | 1.500 | 1.500 | 1.502 | 1.547 | 1.512 |
| No. of alleles | 7.615 | 8.192 | 7.423 | 8.769 | 15.115 |
| SD | 6.494 | 7.441 | 6.307 | 7.881 | 12.087 |
| Allelic Range | 16.714 | 15.524 | 16.091 | 17.708 | 19.846 |
| SD | 11.718 | 13.299 | 13.494 | 14.505 | 15.712 |
| % pairwise linkage | 4.64 | 3.48 | 17.39 | 17.10 | |
| Hobs | 0.568 | 0.594 | 0.542 | 0.539 | |
| SD | 0.282 | 0.265 | 0.323 | 0.262 | |
| Hexp | 0.627 | 0.617 | 0.591 | 0.623 | |
| SD | 0.275 | 0.270 | 0.329 | 0.247 | |
| FIS per population | 0.095 | 0.038 | 0.085 | 0.137 | |
| P-value | 0.001 | 0.016 | 0.001 | 0.001 |