Table 3.

Summary of coefficients estimated for the analysis of prezygotic reproductive isolation when considering geographical context (left) or floral divergence (right) from the Silene data. The confidence intervals are for 95% highest posterior density (HPD) and are significant if they do not include zero (in bold)

Coefficient	Biological meaning	Prezygotic (Geographic model)
		Lower	Upper
μ (intercept)	Average RI	−1.2138	1.9094
βgen.dist.	Slope relating genetic distance and RI	0.9126	7.1054
${\mathrm{\gamma }}_{\mathrm{sym}}$	Additional RI in sympatry	−0.3643	0.1510
${\mathrm{\beta }}_{\mathrm{int}}$	Increase in slope for sympatry	−1.5671	3.5080

Coefficient	Biological meaning	Prezygotic (Floral differences model)
		Lower	Upper
μ (intercept)	Average RI	−1.0166	1.4672
βgen.dist.	Slope relating genetic distance and RI	3.4368	9.5154
${\mathrm{\gamma }}_{\mathrm{color}}$	Additional RI due to color differences	−0.1556	0.3158
${\mathrm{\beta }}_{\mathrm{int}}$	Increase in slope for color differences	−2.4138	2.2990