Table 4.
Genetic variability at 12 allozymic loci and morphological variability (D2m and ED) based on the morphometric analysis of 17 morphological characters in ten populations of M. paucispinus and three populations of M. concinnus occurring in the Chapada Diamantina, Brazil
| Population | N | A | P | Ho | He | D2m* | ED |
|---|---|---|---|---|---|---|---|
| M. paucispinus | |||||||
| PM01 | 24·4 (1·0) | 1·3 (0·1) | 16·7 | 0·004 (0·004) | 0·037 (0·019) | 12·21ac | 3·99 |
| PM02 | 18·3 (1·0) | 1·1 (0·1) | 8·3 | 0·016 (0·016) | 0·039 (0·039) | 12·94ac | 4·07 |
| PM03 | 23·8 (1·3) | 1·2 (0·1) | 8·3 | 0·011 (0·011) | 0·023 (0·018) | 8·54ac | 3·65 |
| PM04 | 22·5 (0·3) | 1·1 (0·1) | 8·3 | 0·014 (0·014) | 0·024 (0·024) | 9·15bc | 3·90 |
| PM05 | 23·2 (1·4) | 1·0 (0·0) | 0·0 | 0·000 (0·000) | 0·000 (0·000) | 8·62bc | 4·69 |
| PD01 | 18·6 (2·1) | 1·2 (0·1) | 8·3 | 0·000 (0·000) | 0·029 (0·023) | 10·33bc | 3·73 |
| PR01 | 21·2 (0·7) | 1·0 (0·0) | 0·0 | 0·000 (0·000) | 0·000 (0·000) | 10·00bc | 3·54 |
| PR02 | 16·4 (0·9) | 1·1 (0·1) | 8·3 | 0·000 (0·000) | 0·008 (0·008) | 10·59ac | 4·64 |
| PR03 | 23·0 (0·3) | 1·1 (0·1) | 8·3 | 0·014 (0·014) | 0·024 (0·024) | 11·89ac | 3·91 |
| PS01 | 24·5 (1·0) | 1·6 (0·2) | 33·3 | 0·022 (0·016) | 0·123 (0·050) | 17·11a | 4·78 |
| Mean | 21·59 | 1·17 | 9·98 | 0·008 | 0·031 | 11·14 | 4·09 |
| M. concinnus | |||||||
| CM01 | 17·2 (1·5) | 1·4 (0·1) | 25·0 | 0·009 (0·006) | 0·104 (0·056) | 13·10ac | 3·78 |
| CM02 | 16·4 (1·3) | 1·4 (0·1) | 25·0 | 0·010 (0·006) | 0·093 (0·048) | 14·54ac | 4·47 |
| CM03 | 16·1 (1·2) | 1·0 (0·0) | 0·0 | 0·000 (0·000) | 0·000 (0·000) | 15·00ac | 4·05 |
| Mean | 16·56 | 1·27 | 16·67 | 0·006 | 0·066 | 14·21 | 4·10 |
See Table 1 for the names of the populations. A locus was considered polymorphic if the frequency of the most common allele did not exceed 0·95.
Different letters in conspecific populations indicate statistically different median values in the Kruskal–Wallis test.
N = mean sample size per locus; A = mean number of alleles per locus; P = percentage of polymorphic loci; Ho = observed and He = expected mean heterozygosity per locus (Nei, 1978; unbiased estimate); D2m = median of the Mahalanobis generalized distance of the individuals to the centroid of the population; ED = mean of the Euclidean distance between the individuals of the population. Numbers in parentheses are s.d.