Table 3.

Measures of intra-population genetic variability based on analyses of microsatellite markers. Sample size (N), P-values of the Fisher’s exact test for deviation from Hardy-Weinberg equilibrium (HWE), expected heterozygosity based on Nei estimate (H_E), observed heterozygosity (HO) and allelic richness estimated for 8 individuals using rarefaction (AR). Populations are ranked from highest AR

Population	Basin	N	HWE	HE (Nei)	HO	AR
T14	Ruvu	17	< 0.001	0.8796 ± 0.0693	0.7381 ± 0.1881	8.615
T64	Ruvu	19	< 0.001	0.8580 ± 0.0916	0.7269 ± 0.2265	8.363
T02	Ruvu	29	< 0.001	0.8531 ± 0.0865	0.6823 ± 0.2008	8.235
TZN 17–9	Ruvu	12	< 0.001	0.8497 ± 0.1095	0.7203 ± 0.1847	8.181
T17	Rufiji	9	< 0.001	0.8458 ± 0.1071	0.6458 ± 0.3079	7.939
T16	Rufiji	18	< 0.001	0.8565 ± 0.0807	0.7233 ± 0.2086	7.934
T09	Wami	19	0.0217	0.7331 ± 0.3114	0.6737 ± 0.3391	7.819
T50	Ruvu	9	< 0.001	0.8437 ± 0.1040	0.5944 ± 0.3248	7.643
T35	Mbezi	20	< 0.001	0.8270 ± 0.1252	0.6611 ± 0.1788	7.260
T06	Wami	21	0.2836	0.6907 ± 0.3046	0.6652 ± 0.3290	6.504
T15	Ruvu	21	0.0083	0.6920 ± 0.1694	0.6375 ± 0.2992	5.162
T31	Mbezi	22	0.1695	0.6339 ± 0.2561	0.6089 ± 0.2904	4.716
T57	Ruvu	27	< 0.001	0.6785 ± 0.1736	0.5362 ± 0.2323	4.600