Table 2.

Pairwise F_ST values

	Apoyo	Xiloa	Masaya	Nicaragua
1987
Apoyo		0.428**	0.383**	0.256**
Xiloa	0.261**		0.029	0.212**
Masaya	0.182**	0.049**		0.141*
Nicaragua	0.166**	0.040**	0.050**
2001
Apoyo		0.474**	0.457**	0.298**
Xiloa	0.217**		0.148*	0.036*
Masaya	0.212**	0.066**		0.065**
Nicaragua	0.143**	0.047**	0.058**
2003
Apoyo		0.499**	0.478**	0.327**
Xiloa	0.228**		0.094**	0.090**
Masaya	0.179**	0.084**		0.092*
Nicaragua	0.146**	0.066**	0.047**
All samples
Apoyo		0.466**	0.464**	0.290**
Xiloa	0.226**		0.088**	0.060**
Masaya	0.164**	0.062**		0.083**
Nicaragua	0.133**	0.062**	0.023**

F_ST values compare differentiation between lakes in each of the time samples and with all samples pooled together. Microsatellite F_STs are below the diagonal, mitochondrial DNA Φ_STs are above the diagonal. * p < 0.05, after sequential Bonferroni correction; ** p < 0.001, after sequential Bonferroni correction.