Table 3. Species with nearest neighbour and intraspecific and interspecific divergence.

Species	Nearest Neighbor (NN)		Intraspecific					Intraspecific
(Number of specimens)
	Nearest Neighbor	Distance to	Count	Mean	SE	Max	Min	Count	Mean	SE	Max	Min
		NN%	Comparisons					Comparisons
Bithynia funiculata (13)	B. siamensis siamensis	7.11	78	1.08	0.10	2.17	0
B. siamensis goniomphalos (30)	B. siamensis siamensis	1.49	435	2.39	0.04	3.95	0
B. siamensis siamensis (40)	B. siamensis goniomphalos	1.49	780	0.62	0.50	1.81	0	2110	2.27	0.13	10.77	0
Wattebledia crosseana (26)	W. baschi	6.00	330	4.93	0.22	9.11	0
W. siamensis (8)	W. baschi	11.39	28	0.32	0.44	0.82	0
W. baschi (7)	W. crosseana	6.00	28	0.05	0.35	0.35	0	446	6.02	0.32	14.19	6.33
Gabbia wykoffi (59)	G. pygmaea	0	1761	3.14	0.05	6.69	0
G. pygmaea (3)	G. wykoffi	0	3	0.00	0.00	0.00	0
G. erawanensis (8)	B. siamensis goniomphalos	15.73	28	0.30	0.07	0.82	0	673	6.62	0.29	22.16	0
Hydrobioides nassa (23)	W. crosseana	14.13	253	0.47	0.03	2.20	0	0	0	0	0	0
Total (217)		63.34	3724	13.30	1.81	27.91	0	3229	14.91	0.74	47.12	0