Table 2.

Results of Mantel tests in Oncomelania h. robertsoni

Geographic distance variable	rM (COI)	rM (AFLP)
Euclidean distance	0.454***	0.217
Isotropic least-cost distance
Cost distance	0.588***	0.249*
Proportions	0.103	0.126**
Onstream segments	0.480***	0.240*
Total path	0.495***	0.249*
Anisotropic least-cost distance
Linear 1:10	0.490***	0.297*
Linear 1:10 proportion	0.115	0.054
Binary 1:10	0.490***	0.246*
Binary 1:10 proportion	0.129	0.166**
Linear 1:100	0.350***	0.131
Linear 1:100 proportion	0.141**	0.228***
Binary 1:100	0.396***	0.133
Binary 1:100 proportion	0.132**	0.264***

Indices for correlation of genetic (COI and AFLP data) distances and geographic distances in Oncomelania h. robertsoni from the Deyang-Mianyang area (r_M). Statistically significant results are marked with asterisks: * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001