Table 2 Genetic diversity measures of 13 Rhizophora mucronata populations of the Western Indian Ocean. Highest levels of allele diversity can be found in East Africa (KEN and TAN). Inbreeding is present in all populations with highest levels on the small remote islands (SEY, ALD1 and ALD2). A high number of monomorphic and fixed loci were apparent in southern Africa (MOZ5 and MOZ6) and remote locations (ALD1, ALD2 and MAD1). Estimated selfing rates were generally high. MOZ1 and MOZ2 individuals can be assigned to other populations whereas individuals from SEY were assigned solely to their own population. Total number of alleles (A), mean number of alleles (AM), effective number of alleles (AE), allelic richness at k = 34 gene copies (AR), observed heterozygosity (HO), unbiased expected heterozygosity (uHe) heterozygosity, inbreeding coefficient (FIS), number of loci fixed as homozygotes for one or more allele (FixLoc), selfing rate (S), percentage of individuals assigned to own population (%Self) and percentage of individuals assigned to any other population (%Other). Significance levels are indicated as follows: *** significant at p < 0.001, ** significant at p < 0.01, * significant at p < 0.05, and ns: not significant.
Pop | A | AM | AE | AR | HO | uHe | FIS | FixLoc | S | %Self | %Other |
|---|---|---|---|---|---|---|---|---|---|---|---|
KEN | 48 | 2.8 | 2.0 | 2.7 | 0.257 | 0.416 | 0.387* | 2 | 0.47*** | 78 | 22 |
TAN | 52 | 3.0 | 1.9 | 2.8 | 0.243 | 0.402 | 0.401* | 0 | 0.49*** | 80 | 20 |
MOZ1 | 42 | 2.5 | 1.6 | 2.4 | 0.193 | 0.332 | 0.425* | 3 | 0.02 ns | 25 | 75 |
MOZ2 | 49 | 2.9 | 1.6 | 2.6 | 0.202 | 0.324 | 0.381* | 0 | 0.56*** | 32 | 68 |
MOZ3 | 50 | 2.9 | 1.6 | 2.5 | 0.155 | 0.277 | 0.444* | 6 | 0.56*** | 66 | 34 |
MOZ4 | 39 | 2.3 | 1.5 | 2.3 | 0.154 | 0.264 | 0.425* | 2 | 0.47* | 78 | 22 |
MOZ5 | 30 | 1.8 | 1.3 | 1.7 | 0.047 | 0.148 | 0.690* | 9 | 0.89*** | 75 | 25 |
MOZ6 | 37 | 2.2 | 1.5 | 2.0 | 0.127 | 0.238 | 0.468* | 7 | 0.71*** | 80 | 20 |
SEY | 41 | 2.4 | 1.6 | 2.3 | 0.140 | 0.323 | 0.573* | 2 | 0.75*** | 100 | 0 |
ALD1 | 39 | 2.3 | 1.4 | 2.1 | 0.129 | 0.225 | 0.431* | 6 | 0.45* | 67 | 33 |
ALD2 | 33 | 1.9 | 1.4 | 1.9 | 0.087 | 0.186 | 0.540* | 9 | 0.43 ns | 76 | 24 |
MAD1 | 37 | 2.2 | 1.3 | 2.0 | 0.106 | 0.183 | 0.425* | 8 | 0.54** | 93 | 7 |
MAD2 | 42 | 2.5 | 1.4 | 2.3 | 0.143 | 0.209 | 0.391* | 4 | 0.63*** | 73 | 27 |
Overall | 84 | 2.4 | 1.5 | 2.9 | 0.152 | 0.271 | 0.455*** | 71 | 29 |